--- product_id: 457530274 title: "NITECORE UI1 Single-Slot Intelligent Lithium-ion Battery USB Charger for 18650, 18350, 20700, 21700, 16340, 14500 and More,and LumenTac Battery Organizer" brand: "nitecore" price: "2402818β‚«" currency: VND in_stock: true reviews_count: 5 category: "Nitecore" url: https://www.desertcart.vn/products/457530274-nitecore-ui1-single-slot-intelligent-lithium-ion-battery-usb-charger store_origin: VN region: Vietnam --- # 800mA max charging current Supports 18650 to 21700 Li-ion batteries Micro-USB compatible with solar & power banks NITECORE UI1 Single-Slot Intelligent Lithium-ion Battery USB Charger for 18650, 18350, 20700, 21700, 16340, 14500 and More,and LumenTac Battery Organizer **Brand:** nitecore **Price:** 2402818β‚« **Availability:** βœ… In Stock ## Summary > πŸ”‹ Charge smarter, carry lighter β€” power your day with UI1! ## Quick Answers - **What is this?** NITECORE UI1 Single-Slot Intelligent Lithium-ion Battery USB Charger for 18650, 18350, 20700, 21700, 16340, 14500 and More,and LumenTac Battery Organizer by nitecore - **How much does it cost?** 2402818β‚« 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/457530274-nitecore-ui1-single-slot-intelligent-lithium-ion-battery-usb-charger) ## Best For - nitecore enthusiasts ## Why This Product - Trusted nitecore brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Power-Packed Single Slot ⚑:** Delivers a robust 800mA charge for rapid battery revival. - β€’ **Anywhere, Anytime Charging πŸ”Œ:** Micro-USB input works with power banks, solar panels, and adapters for ultimate flexibility. - β€’ **Featherlight & Pocket-Ready πŸͺΆ:** Weighs just 1.43oz and fits comfortably in your hand or bag for on-the-go power. - β€’ **Smart & Safe Tech Shield πŸ›‘οΈ:** Intelligent charging modes with built-in safeguards against overcharge, overheating, and reverse polarity. - β€’ **Universal Battery Compatibility πŸ”‹:** Seamlessly charges a wide range of Li-ion sizes from 10340 to 21700 and beyond. ## Overview The NITECORE UI1 is a compact, intelligent single-slot USB charger designed for a broad range of lithium-ion batteries including 18650 and 21700. It delivers up to 800mA charging current, supports micro-USB input compatible with solar panels and power banks, and features advanced safety protections. Weighing only 1.43 ounces and measuring under 5 inches, it’s the perfect portable power solution for professionals who demand efficiency and versatility on the move. ## Description Powerful and compact, the NITECORE UI1 is a single-slot portable USB Li-ion battery charger capable of reaching a maximum charging current of 800mA and supports 18650, 18350, 20700, 21700 and various types and sizes of lithium batteries. Its power indicator provides users with real-time battery level and charging status. It also provides multiple charging safeguards to prevent reverse polarity, overcharging, and overheating. The UI1 features a micro-USB port compatible with various power sources like power banks, solar panels and USB adapters for quick and efficient charging. Weighing less than 1.43 ounces, the lightweight design of the UI1 allows you to carry this charger everywhere you go. Measuring 4.82 inches, the UI1 fits comfortably in the palm of your hand and is portable for outdoor applications. Specifications: Input: DC 5V/1A 5W Output Voltage: 4.2V1% Output Current: 800mA (max) Compatible with : Li-ion/IMR: 10340, 10350, 10440, 10500, 12340, 12500, 12650, 13450, 13500, 13650, 14430, 14500, 14650, 16500, 16340 (RCR123), 16650, 17350, 17500,17650, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 22500, 22650, 25500, 26500, 26650 Maximum Brightness: 5 Dimensions: L-4.82"xW-1.15"xH-1.26" Weight: 1.43oz. Review: Works great πŸ‘πŸΌ Review: This charger is very compact and doesn't take space at all. Perfectly charges my Nitecore batteries. ## Features - POWERFUL CHARGER-The NITECORE UI1 reaches a single slot maximum charging current of 800mA when using 37V rechargeable batteries - MICRO-USB COMPATIBLE - Compatible with multiple USB inputs including solar panels adapters and power reservoirs for quick and efficient charging - INTELLIGENT CHARGING - The UI1 is equipped with intelligent charging mode selection that automatically adopts the optimal charging modes for batteries - LIGHTWEIGHT AND COMPACT - Weighing 143 ounces and less than 5 inches in length the lightweight and compact size of the UI1 allows you to carry it with you on the go - UI1 CHARGER KIT - Included in this bundle is the NITECORE UI1 21700/18650 battery charger usb cable and LumenTac battery/cable case ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B083QNRRWW | | Amperage | 0.8 Amps | | Best Sellers Rank | #11,043 in Electronics ( See Top 100 in Electronics ) #40 in Household Battery Chargers | | Brand | Nitecore | | Connector Type Used on Cable | micro-USB | | Customer Reviews | 4.6 4.6 out of 5 stars (413) | | Global Trade Identification Number | 06952506467242 | | Input Voltage | 5 Volts | | Item Weight | 1.43 Ounces | | Mfr Part Number | UI1+ORG | | Model Number | UI1 | | Number of Ports | 1 | | Output Voltage | 5 Volts | | Specification Met | UL | ## Product Details - **Brand:** Nitecore - **Input voltage:** 5 Volts - **Item weight:** 1.43 Ounces - **Output voltage:** 5 Volts - **Specification met:** UL ## Images ![NITECORE UI1 Single-Slot Intelligent Lithium-ion Battery USB Charger for 18650, 18350, 20700, 21700, 16340, 14500 and More,and LumenTac Battery Organizer - Image 1](https://m.media-amazon.com/images/I/71jQTskuxOL.jpg) ## Questions & Answers **Q: How does this differ from the F1? Is it intended to be an upgrade?** A: Unlike the F1, the UI1charger would be able to charge large-sized batteries like 20700, 21700 batteries & more. **Q: Can these charge the Nitecore 21700/5000 Inteligent battery?** A: UI1 is compatible with 21700 batteries. However, we recommend charging the Nitecore i series batteries through the flashlights. **Q: I would like the functionality of an intelligent usb single-slot quick battery charger for li-ion/ni-mh/ni-cd/imr. any ideas?** A: If you can do without the usb and single slot; the Eastshine S2 charger has a very informative display which I would buy again. Car plug or 110v house, has two speeds, shows charge advancement, Mah, time spent, and volts. Having those updates at a glance keeps you informed. 5 stars. **Q: Will this product charge the nl2140hp?** A: Yes. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by S***K on 24 October 2025* Works great πŸ‘πŸΌ ### ⭐⭐⭐⭐⭐ Review *by R***R on 27 June 2023* This charger is very compact and doesn't take space at all. Perfectly charges my Nitecore batteries. ### ⭐⭐⭐⭐⭐ Review *by E***. on 22 February 2026* Works great with 18650 ## Frequently Bought Together - Nitecore UI1 Single-Slot Intelligent Lithium-ion Battery USB Charger for 18650, 18350, 20700, 21700, 16340, 14500 and More,and LumenTac Battery Organizer - 2X Nitecore IMR 18350 NI18350A 700mAh 3.7V Button Top Rechargeable Battery (This is NOT a Replacement for CR123A) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/457530274-nitecore-ui1-single-slot-intelligent-lithium-ion-battery-usb-charger](https://www.desertcart.vn/products/457530274-nitecore-ui1-single-slot-intelligent-lithium-ion-battery-usb-charger) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-18*