---
product_id: 46813009
title: "50000mAh Laptop Power Bank 5/9/12/16/19/20V Portable Laptop Battery Charger with QC3.0 USB-A Port & 12V Type-C Port for Laptop, Tablet, Smartphone and More Devices"
brand: "krisdonia"
price: "7379730₫"
currency: VND
in_stock: true
reviews_count: 13
category: "Krisdonia"
url: https://www.desertcart.vn/products/46813009-50000mah-laptop-power-bank-5-9-12-16-19-20v
store_origin: VN
region: Vietnam
---

# Adjustable 5-20V DC output 50000mAh ultra-high capacity Multi-port QC3.0 USB-A & Type-C 50000mAh Laptop Power Bank 5/9/12/16/19/20V Portable Laptop Battery Charger with QC3.0 USB-A Port & 12V Type-C Port for Laptop, Tablet, Smartphone and More Devices

**Brand:** krisdonia
**Price:** 7379730₫
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your hustle anywhere, anytime — because dead batteries are so last decade.

## Quick Answers

- **What is this?** 50000mAh Laptop Power Bank 5/9/12/16/19/20V Portable Laptop Battery Charger with QC3.0 USB-A Port & 12V Type-C Port for Laptop, Tablet, Smartphone and More Devices by krisdonia
- **How much does it cost?** 7379730₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/46813009-50000mah-laptop-power-bank-5-9-12-16-19-20v)

## Best For

- krisdonia enthusiasts

## Why This Product

- Trusted krisdonia brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Travel-Ready & Compact:** Sleek 1.2kg design fits effortlessly in your briefcase or backpack for on-the-go professionals.
- • **Power That Lasts All Day:** Charge your 65W laptop up to 2.5 times and smartphones 11-18 times without hunting for outlets.
- • **Built-In Safety & Longevity:** UL-certified Li-Polymer cells with 6 security protections and 1000+ recharge cycles for worry-free use.
- • **Simultaneous Charging Magic:** Pass-through charging lets you power the bank and your devices at once—stay connected without downtime.
- • **Tailored Voltage for Every Device:** Easily switch between 5V to 20V output to safely power laptops, tablets, and more with precision.

## Overview

The Krisdonia 50000mAh Laptop Power Bank is a high-capacity, portable charger designed for professionals on the move. Featuring adjustable DC output from 5V to 20V, it supports direct laptop charging without the original charger. Equipped with QC3.0 USB-A and Type-C ports, it powers multiple devices simultaneously. Its compact 1.2kg form factor fits easily in bags, while UL-certified safety features and over 1000 recharge cycles ensure reliable, long-term performance.

## Description

Product description Attention before purchasing 1. Not TSA approved because of high capacity 185Wh/50000mAh 3.7V 2. Size ( 7.68 x 5.91 x 1.1 inches ) and weight ( 2.55 pounds ). 3. TYPE-C port can't charge 20V TYPE-C laptop as it supports 12V max. 4. Can charge 20V TYPE-C laptop from DC-OUT port with the included TYPE-C converter. 5. Can charge laptops Max.90W-100W. 6. Double click the power button to set the voltage before charging from the DC-OUT port. 7. It will turn off automatically after 1 minute to save power if no device is connecting to it. Tips Low shutdown current for USB & TYPE-C ports: 50mA Low shutdown current for DC-OUT port: 100mA High shutdown current for DC-OUT port: 5V / 8.4V / 9V / 12V >3A; 16V / 20V > 4.7A If the power bank shuts off after 1 minutes, it's due to the current of your laptop being too high. Please don't use your laptop or close the screen of your laptop, then charging it with the power bank. How to Check Whether My Laptop Will Cause Power Bank Overcurrent or not? Please Check the label pasted on the adapter. If the output is more than 4.7A, it may cause overcurrent. So we don't suggest to use this power bank to charge your laptop. Portable Power Station for indoor and outdoor use The compact and lightweight potable laptop charger is featured with one DC output, one TYPE-C output and two QC3.0 USB outputs. It provides off-grid power backup for emergency power failure while engaged in outdoor working and outdoor exploring life. We work and play on on our laptop and take laptop on camping or travel. No one wants to be caught out there with no power, this is why a good portable laptop power bank is critical and useful. Adjustable DC output voltage The DC-OUT port supports 5V/8.4V/9V/12V/16V/20V and can directly charge your laptop without needing your laptop charger. Before charging your laptop or other device from the DC port, please double-click the power button to set the DC voltage. QC3.0 Builds in both USB ports Fast charging phone and tablet. Able to charge compatible devices up to 80% in just 35 minutes. Completely backwards compatible with all versions of Quick Charge. Fast Recharging Fast recharge the power bank with the high quality charger from 19V 2A DC input in 6 hours, saving 60% recharging time. Pass-Through Charging Builds in PASS THROUGH function, which means that it can power other devices while the power bank itself is charging. The function is activated by pressing the button for 2 seconds while the power bank is recharging itself. Perfect Workmanship Builds in high quality li-polymer battery cells, making it portable with big capacity. The case is made of grade aluminum providing flame retardant. The frosted texture and slickly rounded edges offer a superb touch and stylish appearance. Super-High Capacity Enough power to keep you going for days. Charge an 2015 MacBook Pro 13'' over 1 time, an iPhone X over 10 times or iPad Mini 4 over 4 times. Package Including Krisdonia Laptop power bank x 1 Home charger x 1 DC cable x 1 Magsafe2 Cable x 1 TYPE-C Converter x 1 USB Cable x 1 Laptop Connector x 14 Multifunction bag x 1 User Manual x 1

Review: LIBERATES ME FROM RUNNING OUT OF BATTERY TIME! - GOOD - I am very pleased and happy with this product. Krisdonia (Shenzhen Tech. Corp.) has liberated me and made me feel free to sit for hours at outdoor coffee shops and indoor mall seating by the fountain. I get my laptop battery charged plus many MORE hours from the Krisdonia. I am using an Acer Aspire 5 (A515-43-R19L). Krisdonia is a really good equipment! Operating this battery is very simple, but the directions must be followed EXACTLY for success using it. Directions say turn ON by holding down front button for 2 seconds - needs to be 3 seconds to hold down and turn ON and then one changes the voltage selection by rapidly pressing the same front button two times ("double click") and then 2 times again for the next voltage level selection until one has the correct setting for your device - I also use the Krisdonia for cell phone charging and recharging u. s. b. bicycle lights. When finished charging devices one should hold down the same front button 3 seconds to turn Krisdonia OFF. The Krisdonia is very attractive in black and elegantly minimal. The older technology of the Krisdonia makes it about 3 lbs., but that is why it is affordable. The so called "pass through" charge meaning charging the device, using the Krisdonia plugged into an outlet while simultaneously using the device, may or may NOT work. The directions say if Krisdonia automatically shuts off, then this will mean that it is telling you: "pass through" will not work. I cannot do this pass through - the light on front and the Krisdonia itself just turn off. However, I can plug the CHARGED Krisdonia into the laptop WITHOUT having the Krisdonia plugged into a wall outlet and charge the laptop WHILE using the laptop. In other words- - I have to unplug the KRISDONIA from the wall outlet before I can connect to the devices for charging them while using these devices. For those, like myself, who do not know what "voltage" means -here's a tip not to worry: if you set the voltage too low nothing will happen. It just will not go on and no electricity goes through. If you set the voltage too high, it will only put the right amount in without causing harm. In other words the higher voltage amount will be reduced to the voltage needed by the item being charged. It will not burn or explode. Incidentally, I charge my bicycle rechargeable lights and smartphone also-works fabulous! I am able to use the Krisdonia and connect it to my laptop with only one simple cord provided - real simple! Charging Krisdonia takes approx. 3-4 hours and will read out a digital % number as it charges and reaches 100%, but it can also be partially charged like if you are in a hurry possibly use it when it says 47% and then that takes about 1 more hour to reach 100%.
Review: Buy Without Hesitation - You never know what you are getting with off-brand overseas products. This product is legit. I was not paid or compensated to leave this review. 1. You press the only button on the device to turn on. It defaults to 5V, which is for USB. You click button twice quickly to move up through different voltages, with it returning to 5V after the highest 20V setting. This feature is easy to use and works. 2. I tried using this to charge/run my Dell Precision 7550 and Thinkpad P1 Gen 3. These are both high end workstation laptops, the 7550 especially, which come with 185W and 135W power supplies, respectively. At the lowest power mode on the Precision 7550, power saver, in Win10, internal laptop battery lost about 1% per hour, with this external battery lasting about 3-4 hours. It was able to run the laptop the way my AC adapter does--on low power mode in Win10. I was not masochistic enough to try high performance mode. I had the same excellent result with my Thinkpad. The adapters provided with this device plugin where the AC adapter does, and the Dell (large) and rectangular Thinkpad both worked. They fit snugly in holes, but there was some metal on the adapter protruding out the adapter hole on laptop, which the native OEM Dell and Lenovo adapters do not do. This is very minor and did not bother me, though anything contacting the protruding metal would be electrified and maybe short out device. Overall, I was incredibly pleased that this battery can honestly power both my absurdly powerful workstation laptops--the Precision especially. These are 15" not 17" workstations, however. I cannot vouch for all the other connectors, but the Dell and Thinkpad worked for me at 20V setting. I did check output with meter before using, to make sure didn't fry my laptops, it was 20V. I did not have equipment to determine amp draw of the device, or my laptops, but I think the huge power adapters that ship with them are designed to allow running device full throttle (which is absurd amount of computer processing power with the 7K series precision) AND charge the battery. This device lists maximum output of 4.7A at 20V, or about 94W. This would mean if its 185WH rating is legit, it should last about 2H at maximum output. It lasted 3-4 hours, which makes me think output is about 2.5A to power my laptop. I again could not measure amp draw directly, these are guesstimates. Overall, I got this primarily to power my workstations when travelling, the manufactures used to sell external swappable batteries that clicked into system, but no longer do so most all batteries being completely internal, but this is ultimately a bit better because it allows powering multiple brands of laptops without buying batteries for both. 3. I used both USB ports to power/charge a phone and tablet, simultaneously, including a Samsung Galaxy View 2, a huge tablet. If it can handle workstations, rest of stuff is easy, but just confirming that both USB-A and USB-C ports work and did not fry at least 5 different devices, it tried and powered or charged all effortlessly, including a Google phone, Samsung phone, a Google tablet, an Apple tablet, and a Samsung tablet. 4. This device is large, but I didn't expect to power a precision 7K series with something tiny. It fits in the rear or front pocket of my laptop case, which is good enough for me, but I wouldn't want to be lugging it too far. 5. The small cloth zipcase that comes with it fits it perfectly, with a small front pocket that I put the Dell and Thinkpad adapters in. I can fit it in my leather attache front or rear pockets even in case; though a battery this big again will never be small, this is at least designed with a profile--it is reasonably thin--that makes it as portable as possible. The case has incredibly strong chemical smell and will need to be aired out prior to use. 6. The device did not grow hot while running my workstations or powering anything else. 7. The digital display is easy to read. The percent left is helpful, but the time left that some higher-end devices have would be helpful. The green display is a bit old-school, like an old digital clock, a smaller grey screen with better resolution might be better, which would allow time left to be shown. It is still essential to be able to see the voltage, and the percent left is much better than just four green lights like on most devices. The display works and meets the need, but something like on Yeti Sherpa would be great. 8. Minor quibble. There is no list of all adapters included in manual, nor way to know what the different adapters are with exactitude. Some have letters on side. The Dell says forDell right on adapter, but it still would be nice to at least have a diagram in manual showing closeup or list of what color or letter adapter is what. If I didn't own Dell or Lenovo, might have been some guesswork. 9. The only major gripe I would have, and it is still very minor, is inability to charge it via USB. You can only use the included AC power brick, which outputs 5V DC in, to a separate port on device. If I'm travelling, carrying this becomes a real pain. I would have preferred a USB-C in, or ability to use USB-C out as in, so I can use my slim AC outlet plug that a USB plugs into in a pinch. To use the stuff I normally travel with to charge it in a pinch, in other words. 10. When you consider they way American brands gouge consumers, this is an exceptional value. To take one simple example, the GZ Sherpa 100 has 94WH, about half this, and runs $300, meaning you could by 2 of these, have $60 to spare, and have four times the power of a Sherpa 100, though the Sherpa does have an AC output and a better display. 11. Airlines don't allow large Lithium batteries because they can runaway thermally and cause fires that are hard to put out. One of those too big could down a plane. This company makes a smaller one that is airline TSA compliant, but I didn't want that. I wanted the biggest battery or WH I could find in something still portable to power my workstation laptops. This is it. This was quite simply the best value on a per/WH basis that still seemed legit and reliable. The larger WH version had an outlet, but was not nearly as price competitive on per/WH basis, which is unsurprising because adding another inverter not cheap. 12. I did not drain device full to empty and measure total WH, so cannot vouch for total WH, but it is at least in ballpark claimed per laptop tests. I cannot speak for long-term durability of batteries, but they are all made at the same dozen or so Asian factories anyway. For just over $100, if it lasts a little less long than products 3-6 times the cost for much less WH, I'm fine with that. 13. Let's be honest, everything is made in China anyway, American prosperity is coming to an end, why not just buy direct from Asia at half or a third the price, and cut out American companies that just mark everything up and gouge consumers? That's what I did and I couldn't be happier. ### Updated review, 03Apr2025. I have become less satisfied with this over time. The primary reason is the lack of USB charging, which now supports 100W via USB-C. Devices like this with specialized chargers rather than USB-C are legacy. This still holds charge fantastic, without latent, passive, self discharge of fancier trendy devices like Anker, Ugreen, etc. I can put it on shelf, pick it up 2 months later, 98% charge. Devices like the Anker 737 or Ugreen seem to discharge rapidly passively, which isn't problem day to day use, but more problematic if you don't want to charge it every few weeks. Most devices like this only provide usable capacity of about 60% of rated, this is no different, but it has maintained that capacity over time with modest but not heavy use. So years later, batteries still going strong, but I simply cannot recommend this device with its antiquated need for separate DC charger, and its lack of support for 100W usb-c output without a special cable, to run laptops. The need for specialized input and output cables to utilize higher power makes this a legacy device I would pass on, despite the good quality.

## Features

- Pass Through: Support charging and discharging at the same time. The function is activated by pressing the button for 2 seconds while the power bank is charging.
- Emergency Battery Backup for Outdoors: Size 19.5 x 15 x 2.8cm and weight 1.2kg. You can easily put it in your briefcase, backpack or carrying bag when you're on the go. It keeps your devices powered for emergency.
- Adjustable DC Output 5V-20V: The DC OUT port supports 5V/8.4V/9V/12V - 3A (max); 16V(compatible 16.5V) / 20V(compatible 19V, 19.5V for laptops) - 4.7A (max). Krisdonia 50,000 can directly charge your laptop without needing your laptop charger. Please double click the power button to set the voltage before charging from the DC OUT port.
- QC3.0 USB/TYPE-C 12V Output: 2x QC3.0 USB-A ports for smartphones, tablets and other USB devices. 1x TYPE-C port for iPad, not for 20V TYPE-C laptop. ( Please charge your 20V TYPE-C laptop from the DC OUT port with the TYPE-C converter. )
- High Capacity: The 50000mAh(3.7V)/185Wh external battery provides enough juice to power a 65W laptop for 2.5 times and smartphone for 11-18 times. DC-IN 19V/2A enables the power bank to be recharged in 6 hours.
- Superior Quality & Safety Guaranteed: Conform to UL1642 and UL2056 Standards. Constructed with Li-Polymer battery cells and built in 6 security protection to ensure safety use and 1000+ recharge cycles. We provide our customers 12-month warranty.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B074N1B15F |
| Amperage | 3 Amps |
| Antenna Location | Gaming Console |
| Battery Capacity | 50000 Milliamp Hours |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 7 Hours |
| Battery Weight | 850 Grams |
| Best Sellers Rank | #31,340 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #704 in Cell Phone Portable Power Banks |
| Brand | Krisdonia |
| Color | black |
| Compatible Devices | Laptop, Router, Smartphone, Tablet |
| Compatible Phone Models | All |
| Connector Type | USB Type A, USB Type C |
| Customer Reviews | 4.2 out of 5 stars 889 Reviews |
| Item Dimensions | 7.68 x 5.91 x 1.1 inches |
| Item Dimensions L x W x Thickness | 7.68"L x 5.91"W x 1.1"Th |
| Item Weight | 1155 Grams |
| Manufacturer | Shenzhen Nejifu Technology Co.,Ltd |
| Mfr Part Number | NJF-5X |
| Model Number | NJF-5X |
| Number of Batteries | 1 Lithium Polymer batteries required. (included) |
| Number of Ports | 4 |
| Other Special Features of the Product | Portable, Wireless Charging |
| Reusability | Rechargeable |
| Special Feature | Portable, Wireless Charging |
| UPC | 613852009215 |
| Unit Count | 1 Count |
| Voltage | 12 Volts |
| Warranty Type | Limited |

## Product Details

- **Battery Capacity:** 50000 Milliamp Hours
- **Brand:** Krisdonia
- **Color:** black
- **Connector Type:** USB Type A, USB Type C
- **Special Feature:** Portable, Wireless Charging

## Images

![50000mAh Laptop Power Bank 5/9/12/16/19/20V Portable Laptop Battery Charger with QC3.0 USB-A Port & 12V Type-C Port for Laptop, Tablet, Smartphone and More Devices - Image 1](https://m.media-amazon.com/images/I/616Gq24eDgL.jpg)
![50000mAh Laptop Power Bank 5/9/12/16/19/20V Portable Laptop Battery Charger with QC3.0 USB-A Port & 12V Type-C Port for Laptop, Tablet, Smartphone and More Devices - Image 2](https://m.media-amazon.com/images/I/7175n0OtXwL.jpg)
![50000mAh Laptop Power Bank 5/9/12/16/19/20V Portable Laptop Battery Charger with QC3.0 USB-A Port & 12V Type-C Port for Laptop, Tablet, Smartphone and More Devices - Image 3](https://m.media-amazon.com/images/I/812UGowa9JL.jpg)
![50000mAh Laptop Power Bank 5/9/12/16/19/20V Portable Laptop Battery Charger with QC3.0 USB-A Port & 12V Type-C Port for Laptop, Tablet, Smartphone and More Devices - Image 4](https://m.media-amazon.com/images/I/81u-RqSVnwL.jpg)
![50000mAh Laptop Power Bank 5/9/12/16/19/20V Portable Laptop Battery Charger with QC3.0 USB-A Port & 12V Type-C Port for Laptop, Tablet, Smartphone and More Devices - Image 5](https://m.media-amazon.com/images/I/71xuepg-xeL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: The description says "update" supports pass through charging. i cannot, however get anything to charge while the power bank, itself, is charging?**
A: Yes it does, but there's a trick:  You must first plug the cable to charge the battery pack, and second, press the power button until the display says 5V.  This enables pass-through mode.  Of course you can double-press the power button if you need to adjust the DC output if needed.   Just remember that when you plug in the charging cable for the battery pack, it will immediately shut off the output until you turn it on again.

**Q: how does manufacturer come up 50000 mah ? what cell using ?**
A: I believe that is at 3.7V, so 50,000mAh * 3.7V = 185 Wh.

**Q: Does it/ can it be used to change a Surface pro 4**
A: Yes. It can charge Surface pro 4 which is 12v. 
DC output: 5V/8.4V/9V/12V 3A (max)    16V(16.5V)/20V(19V, 19.5V) 4.7A (max) 
But we don't include this adapter. You need to buy an adapter or a cable by youself.
Thank you. Have a nice day!

**Q: Pretty sure this cannot be checked in a aircraft baggage. Kindly clarify if this is allowed as a hand luggage on an airplane provided its power?**
A: Dear customer, this power bank is 185Wh and you cannot take it on plane, even a hand luggage. You can buy Krisdonia 25000mAh which can be taken on plane.
Thank you. Have a good one.

## Customer Reviews

### ⭐⭐⭐⭐⭐ LIBERATES ME FROM RUNNING OUT OF BATTERY TIME!
*by A***R on March 7, 2024*

GOOD - I am very pleased and happy with this product. Krisdonia (Shenzhen Tech. Corp.) has liberated me and made me feel free to sit for hours at outdoor coffee shops and indoor mall seating by the fountain. I get my laptop battery charged plus many MORE hours from the Krisdonia. I am using an Acer Aspire 5 (A515-43-R19L). Krisdonia is a really good equipment! Operating this battery is very simple, but the directions must be followed EXACTLY for success using it. Directions say turn ON by holding down front button for 2 seconds - needs to be 3 seconds to hold down and turn ON and then one changes the voltage selection by rapidly pressing the same front button two times ("double click") and then 2 times again for the next voltage level selection until one has the correct setting for your device - I also use the Krisdonia for cell phone charging and recharging u. s. b. bicycle lights. When finished charging devices one should hold down the same front button 3 seconds to turn Krisdonia OFF. The Krisdonia is very attractive in black and elegantly minimal. The older technology of the Krisdonia makes it about 3 lbs., but that is why it is affordable. The so called "pass through" charge meaning charging the device, using the Krisdonia plugged into an outlet while simultaneously using the device, may or may NOT work. The directions say if Krisdonia automatically shuts off, then this will mean that it is telling you: "pass through" will not work. I cannot do this pass through - the light on front and the Krisdonia itself just turn off. However, I can plug the CHARGED Krisdonia into the laptop WITHOUT having the Krisdonia plugged into a wall outlet and charge the laptop WHILE using the laptop. In other words- - I have to unplug the KRISDONIA from the wall outlet before I can connect to the devices for charging them while using these devices. For those, like myself, who do not know what "voltage" means -here's a tip not to worry: if you set the voltage too low nothing will happen. It just will not go on and no electricity goes through. If you set the voltage too high, it will only put the right amount in without causing harm. In other words the higher voltage amount will be reduced to the voltage needed by the item being charged. It will not burn or explode. Incidentally, I charge my bicycle rechargeable lights and smartphone also-works fabulous! I am able to use the Krisdonia and connect it to my laptop with only one simple cord provided - real simple! Charging Krisdonia takes approx. 3-4 hours and will read out a digital % number as it charges and reaches 100%, but it can also be partially charged like if you are in a hurry possibly use it when it says 47% and then that takes about 1 more hour to reach 100%.

### ⭐⭐⭐⭐⭐ Buy Without Hesitation
*by A***R on April 16, 2022*

You never know what you are getting with off-brand overseas products. This product is legit. I was not paid or compensated to leave this review. 1. You press the only button on the device to turn on. It defaults to 5V, which is for USB. You click button twice quickly to move up through different voltages, with it returning to 5V after the highest 20V setting. This feature is easy to use and works. 2. I tried using this to charge/run my Dell Precision 7550 and Thinkpad P1 Gen 3. These are both high end workstation laptops, the 7550 especially, which come with 185W and 135W power supplies, respectively. At the lowest power mode on the Precision 7550, power saver, in Win10, internal laptop battery lost about 1% per hour, with this external battery lasting about 3-4 hours. It was able to run the laptop the way my AC adapter does--on low power mode in Win10. I was not masochistic enough to try high performance mode. I had the same excellent result with my Thinkpad. The adapters provided with this device plugin where the AC adapter does, and the Dell (large) and rectangular Thinkpad both worked. They fit snugly in holes, but there was some metal on the adapter protruding out the adapter hole on laptop, which the native OEM Dell and Lenovo adapters do not do. This is very minor and did not bother me, though anything contacting the protruding metal would be electrified and maybe short out device. Overall, I was incredibly pleased that this battery can honestly power both my absurdly powerful workstation laptops--the Precision especially. These are 15" not 17" workstations, however. I cannot vouch for all the other connectors, but the Dell and Thinkpad worked for me at 20V setting. I did check output with meter before using, to make sure didn't fry my laptops, it was 20V. I did not have equipment to determine amp draw of the device, or my laptops, but I think the huge power adapters that ship with them are designed to allow running device full throttle (which is absurd amount of computer processing power with the 7K series precision) AND charge the battery. This device lists maximum output of 4.7A at 20V, or about 94W. This would mean if its 185WH rating is legit, it should last about 2H at maximum output. It lasted 3-4 hours, which makes me think output is about 2.5A to power my laptop. I again could not measure amp draw directly, these are guesstimates. Overall, I got this primarily to power my workstations when travelling, the manufactures used to sell external swappable batteries that clicked into system, but no longer do so most all batteries being completely internal, but this is ultimately a bit better because it allows powering multiple brands of laptops without buying batteries for both. 3. I used both USB ports to power/charge a phone and tablet, simultaneously, including a Samsung Galaxy View 2, a huge tablet. If it can handle workstations, rest of stuff is easy, but just confirming that both USB-A and USB-C ports work and did not fry at least 5 different devices, it tried and powered or charged all effortlessly, including a Google phone, Samsung phone, a Google tablet, an Apple tablet, and a Samsung tablet. 4. This device is large, but I didn't expect to power a precision 7K series with something tiny. It fits in the rear or front pocket of my laptop case, which is good enough for me, but I wouldn't want to be lugging it too far. 5. The small cloth zipcase that comes with it fits it perfectly, with a small front pocket that I put the Dell and Thinkpad adapters in. I can fit it in my leather attache front or rear pockets even in case; though a battery this big again will never be small, this is at least designed with a profile--it is reasonably thin--that makes it as portable as possible. The case has incredibly strong chemical smell and will need to be aired out prior to use. 6. The device did not grow hot while running my workstations or powering anything else. 7. The digital display is easy to read. The percent left is helpful, but the time left that some higher-end devices have would be helpful. The green display is a bit old-school, like an old digital clock, a smaller grey screen with better resolution might be better, which would allow time left to be shown. It is still essential to be able to see the voltage, and the percent left is much better than just four green lights like on most devices. The display works and meets the need, but something like on Yeti Sherpa would be great. 8. Minor quibble. There is no list of all adapters included in manual, nor way to know what the different adapters are with exactitude. Some have letters on side. The Dell says forDell right on adapter, but it still would be nice to at least have a diagram in manual showing closeup or list of what color or letter adapter is what. If I didn't own Dell or Lenovo, might have been some guesswork. 9. The only major gripe I would have, and it is still very minor, is inability to charge it via USB. You can only use the included AC power brick, which outputs 5V DC in, to a separate port on device. If I'm travelling, carrying this becomes a real pain. I would have preferred a USB-C in, or ability to use USB-C out as in, so I can use my slim AC outlet plug that a USB plugs into in a pinch. To use the stuff I normally travel with to charge it in a pinch, in other words. 10. When you consider they way American brands gouge consumers, this is an exceptional value. To take one simple example, the GZ Sherpa 100 has 94WH, about half this, and runs $300, meaning you could by 2 of these, have $60 to spare, and have four times the power of a Sherpa 100, though the Sherpa does have an AC output and a better display. 11. Airlines don't allow large Lithium batteries because they can runaway thermally and cause fires that are hard to put out. One of those too big could down a plane. This company makes a smaller one that is airline TSA compliant, but I didn't want that. I wanted the biggest battery or WH I could find in something still portable to power my workstation laptops. This is it. This was quite simply the best value on a per/WH basis that still seemed legit and reliable. The larger WH version had an outlet, but was not nearly as price competitive on per/WH basis, which is unsurprising because adding another inverter not cheap. 12. I did not drain device full to empty and measure total WH, so cannot vouch for total WH, but it is at least in ballpark claimed per laptop tests. I cannot speak for long-term durability of batteries, but they are all made at the same dozen or so Asian factories anyway. For just over $100, if it lasts a little less long than products 3-6 times the cost for much less WH, I'm fine with that. 13. Let's be honest, everything is made in China anyway, American prosperity is coming to an end, why not just buy direct from Asia at half or a third the price, and cut out American companies that just mark everything up and gouge consumers? That's what I did and I couldn't be happier. ### Updated review, 03Apr2025. I have become less satisfied with this over time. The primary reason is the lack of USB charging, which now supports 100W via USB-C. Devices like this with specialized chargers rather than USB-C are legacy. This still holds charge fantastic, without latent, passive, self discharge of fancier trendy devices like Anker, Ugreen, etc. I can put it on shelf, pick it up 2 months later, 98% charge. Devices like the Anker 737 or Ugreen seem to discharge rapidly passively, which isn't problem day to day use, but more problematic if you don't want to charge it every few weeks. Most devices like this only provide usable capacity of about 60% of rated, this is no different, but it has maintained that capacity over time with modest but not heavy use. So years later, batteries still going strong, but I simply cannot recommend this device with its antiquated need for separate DC charger, and its lack of support for 100W usb-c output without a special cable, to run laptops. The need for specialized input and output cables to utilize higher power makes this a legacy device I would pass on, despite the good quality.

### ⭐⭐⭐⭐⭐ Excellent Power Bank
*by L***Z on January 7, 2023*

I’m mainly using it to power a Positive Grid Spark 40 amplifier. It works very well, but if anything, the Krisdonia is too smart for my purposes. Since the Spark is not a device being charged, the power bank doesn’t recognize it, and the 1-minute shutdown kicks in. The solution is to plug in a USB device to increase the current draw and keep the power bank on. This was recommended by many members of Spark 40 groups on FB, and also by Krisdonia themselves. A simple USB light will do. You could also charge a device via USB while powering the amplifier, but again, once the Krisdonia senses the device is fully charged, the 1-minute shutdown will occur. So for me, it’s a USB light as it requires a constant draw. While the design choice of needing to double-press the power button to cycle through the voltage choices is a very solid one, it’s a minor hassle but ensures greater accuracy than putting the voltage choices on a slider-switch, for example, which could easily be placed in the wrong position and POOF!, bad things happen! Krisdonia designed it in such a way that the user HAS to make sure it is in the correct voltage for the customer’s intended application. What would be a very nice feature would be if it could “remember” the last selected voltage output. Cycling through all the settings to get to 20V (what the Spark needs) every single time the power bank is used is a slight inconvenience. This suggestion was sent to Krisdonia, and their reply was that they would take it under consideration. Overall, highly recommended. Fast-charging, long-lasting, so far it’s been very dependable for a number of uses. Even with its shortcomings, such as having to set the correct voltage every time it’s used, and needing to bump up the draw with a USB device, again, just for my purposes regarding the amplifier, it’s no fault of the power bank’s design, I very much like it and I’ll keep it. I can use it for much more than just powering the Spark.

## Frequently Bought Together

- Krisdonia 50000mAh Laptop Power Bank 5/9/12/16/19/20V Portable Laptop Battery Charger with QC3.0 USB-A Port & 12V Type-C Port for Laptop, Tablet, Smartphone and More Devices
- ORIEMARS USB Laptop Light with Adjustable Gooseneck, 3 Color x 3 Brightness + 3 Mini LED Lights

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.vn/products/46813009-50000mah-laptop-power-bank-5-9-12-16-19-20v](https://www.desertcart.vn/products/46813009-50000mah-laptop-power-bank-5-9-12-16-19-20v)

---

*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-06-04*