---
product_id: 677629499
title: "SUNAPEX 12V 20 Watt Solar Trickle Charger Maintainer with MPPT Controller - Portable Waterproof Solar Powered Battery Charger - Solar Panel Kit for Car Rv Trailer Truck Boat Automotive Marine"
brand: "sunapex"
price: "3726695₫"
currency: VND
in_stock: true
reviews_count: 6
url: https://www.desertcart.vn/products/677629499-sunapex-12v-20-watt-solar-trickle-charger-maintainer-with-mppt
store_origin: VN
region: Vietnam
---

# 20W high-efficiency power output IP67 waterproof rating 12V battery compatibility SUNAPEX 12V 20 Watt Solar Trickle Charger Maintainer with MPPT Controller - Portable Waterproof Solar Powered Battery Charger - Solar Panel Kit for Car Rv Trailer Truck Boat Automotive Marine

**Brand:** sunapex
**Price:** 3726695₫
**Availability:** ✅ In Stock

## Summary

> ☀️ Keep your power flowing, no matter where life takes you!

## Quick Answers

- **What is this?** SUNAPEX 12V 20 Watt Solar Trickle Charger Maintainer with MPPT Controller - Portable Waterproof Solar Powered Battery Charger - Solar Panel Kit for Car Rv Trailer Truck Boat Automotive Marine by sunapex
- **How much does it cost?** 3726695₫ 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/677629499-sunapex-12v-20-watt-solar-trickle-charger-maintainer-with-mppt)

## Best For

- sunapex enthusiasts

## Why This Product

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

## Key Features

- • **All-Weather Ready:** IP67 waterproof design ensures reliable performance rain or shine, wherever you go.
- • **Rapid Solar Boost:** Monocrystalline solar cells deliver faster, more efficient charging than standard panels.
- • **Smart Battery Guardian:** Advanced MPPT controller prevents overcharging and battery drain for ultimate battery health.
- • **Plug & Play Portability:** Lightweight, flexible panel with carabiners for effortless setup on cars, boats, or trailers.
- • **Versatile Power Partner:** Compatible with multiple battery types including lithium, AGM, GEL, and flooded for diverse applications.

## Overview

The SUNAPEX 12V 20W Solar Trickle Charger features a cutting-edge MPPT controller for efficient, safe charging of various 12V batteries. Its monocrystalline panel ensures rapid energy capture, while the IP67 waterproof rating guarantees durability in all weather conditions. Lightweight and portable, it’s perfect for maintaining batteries in vehicles, boats, and off-grid devices, backed by a one-year warranty and lifetime support.

## Description

Full description not available

## Features

- Battery Savior: This is designed to charge and maintain 12V rechargeable batteries. Use it to charge and maintain infrequently used vehicles; boats; outdoor electronics; lawnmowers and more. Ensure your devices start anytime and protect batteries from long-term discharge. It’s also ideal for off-grid devices like electric fences; gate openers; water pumps; weather systems; cameras, etc. Compatible with most battery likes sealed lead-acid; lithium; LiFePO4; GEL; AGM; flooded, etc
- No Overcharging, No Battery Drain: The controller prevents overcharging and stops charging when the battery is full, resuming when voltage drops. Ensures battery safety without draining power
- Upgraded MPPT Controller: Outperforms PWM controllers with faster charging and higher currents. Features 4 battery status indicators and precise charging modes for LiFePO₄; GEL and AGM batteries
- High-Efficiency Solar Panel: Monocrystalline cells charge faster than polycrystalline and amorphous panels of the same size
- IP67 Waterproof: Fully sealed and IP67 waterproof, suitable for all weather conditions Easy Installation & Portable: Lightweight and flexible, with carabiners for hanging anywhere
- Worry-Free Warranty & Support: SUNAPEX offers a one-year warranty and lifetime technical support. 24/7 customer service ensures prompt responses. Contact us anytime for assistance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Maximum Power | 20 Watts |

## Product Details

- **Brand:** SUNAPEX
- **Material:** Monocrystalline Silicon, Polymer, Aluminum
- **Efficiency:** High Efficiency
- **Maximum Voltage:** 12 Volts (DC)
- **Maximum Power:** 20 Watts

## Images

![SUNAPEX 12V 20 Watt Solar Trickle Charger Maintainer with MPPT Controller - Portable Waterproof Solar Powered Battery Charger - Solar Panel Kit for Car Rv Trailer Truck Boat Automotive Marine - Image 1](https://m.media-amazon.com/images/I/916+LRYS9UL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does its job! Keeps my battery fresh.
*by A***D on July 2, 2025*

Build quality:Seams to be sturdy. Had to make a frame for it for my application but handles the elements. Charging speed:Definitely works. Keeps my troller battery fresh!Ease of installation:plug n play. For most applications. Be great for car, comes with window suction cups.

### ⭐⭐⭐⭐⭐ Great Solar Charger
*by I***D on March 30, 2021*

My experience with solar chargers started about a year ago. I had a 5 watt charger that a friend had given me for my generator battery. I never used it for that.Fast forward one year later - I have since retired and my truck sits in my driveway a lot more than it used to.My battery kept going dead so I tried the 5 watt charger and waited a week to see if it either worked or if my battery was dead again.To my surprise it worked! My truck started right up but the problem was that the old battery was 4 years old at that point and I knew that this was going to keep happening unless I either went back to work or I was going to keep the solar charger on my truck battery.The sun and the heat warped my 5 watt charger so I needed a new one. I saw this one and it was on sale at the moment I purchased it here on Amazon. You should know that any solar charger you buy will be subjected to extreme heat and light so please keep that in mind when you buy one of these things. I recently went to remove mine during a hot afternoon and nearly burnt myself because the unit was so hot after being on my dashboard in the midday sun in front of my dashboard heat shield (see pic).20 watts seems to be the limit for a solar charger before it needs a separate controller to regulate the flow of power to what whatever it is you're charging.Also for those who care at 20 watts the charger is putting out about one amp of DC electricity which would be the equivalent of a trickle charger output from a battery tender.I like this unit because the solar panel is flexible instead of being rigid or made from hard plastic like my 5 watt charger. The holes in each corner give you the flexibility on how you want to position for maximum sunlight exposure. In my case I laid the panel down on my dashboard and put my big sunshade behind it to protect the dashboard and interior of the truck from the heat and sun fade. The sunshade keeps the panel propped up for best sun exposure.I didn't write the review until I tested it out the same way I tested the 5 watt panel, by waiting a week to see if my new battery (Northstar AGM- NOT RECOMMENDED due to it going dead within 10 days of inactivity and VERY poor warranty support-see my review) would be able to start my truck (Nissan Murano). The Murano has a 3.5 liter engine, not a big engine by any standard yet I have to keep a solar charger on it in order to prevent the battery from draining on me.The charger has been on my truck for about 3 weeks now and whenever I decide to go for a drive my truck starts right up with no issues. I disconnect the charger before I start the truck and when I come home I reconnect it. A bit of a pain in the neck but it guarantees that my truck will always start no matter how long it sits in my drivewayI can see this charger might have other uses too. It could be used in a camping situation to charge battery packs or an emergency situation as well.The only minor quibble I have is that the panel does come with a small controller attached to the back to let you know that the charger is charging. There are 3 lights on this little controller. One to let you know that it's receiving sunlight so that it can function. Another LED to let you know that it's charging whatever battery you have it attached to. Then there is a third LED, a green one. Once an item is fully charged the green light is supposed to come on. I have yet to see this green light come on but the charger does work as it's intended.Update 5-29-21- The green light on the controller does appear to function! I noticed the other day after having my truck sitting with the charger attached the green light on the back of the solar panel was on! Apparently my battery must have been low and it took time for the charger to top off the battery.Highly recommended--------------------------------------------------------------------------------------------------------------------------I rely heavily on reviews when I make purchases so I put some time into reviewing everything I buy on Amazon for personal or business use so I can help other people considering that item. If you found my review helpful, please consider hitting the "helpful" button below when it asks if the review is helpful. Thank you!

### ⭐⭐⭐⭐ It works as described.
*by D***R on July 10, 2025*

I haven't had it that long, but It seems to be working fine. Don't expect the suction cups to work. I can't get them to stick to any smooth surface. I bought better ones. Another issue is there is no setting for a lead acid battery.

## Frequently Bought Together

- SUNAPEX 20W Flexible Solar Panel with MPPT Charge Controller, Solar Battery Charger Maintainer, 12V Waterproof Solar Trickle Charger for Car, Motorcycle, Boat, Marine, RV, Trailer, Tractor,Truck, etc
- OYMSAE 25Feet SAE to SAE Extension Cable Quick Disconnect Connector 16AWG,for Automotive,Solar Panel Panel SAE Plug(25FT(16AWG)), Charging Adapter

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-28*