---
product_id: 578858051
title: "POWOXI-Upgraded-20W-Solar-Battery-Charger-Maintainer, External Smart 3-Stages PWM Charge Controller, 12V Solar Panel Trickle Charging Kit for Car, Marine, Motorcycle, RV, etc"
brand: "powoxi"
price: "€ 104.80"
currency: EUR
in_stock: true
reviews_count: 13
category: "Powoxi"
url: https://www.desertcart.ie/products/578858051-powoxi-upgraded-20w-solar-battery-charger-maintainer-external-smart-3
store_origin: IE
region: Ireland
---

# Smart 3-stage PWM charge controller USB charging for mobile devices 20W high-efficiency solar power POWOXI-Upgraded-20W-Solar-Battery-Charger-Maintainer, External Smart 3-Stages PWM Charge Controller, 12V Solar Panel Trickle Charging Kit for Car, Marine, Motorcycle, RV, etc

**Brand:** powoxi
**Price:** € 104.80
**Availability:** ✅ In Stock

## Summary

> ☀️ Power your adventure, charge your life — never miss a beat!

## Quick Answers

- **What is this?** POWOXI-Upgraded-20W-Solar-Battery-Charger-Maintainer, External Smart 3-Stages PWM Charge Controller, 12V Solar Panel Trickle Charging Kit for Car, Marine, Motorcycle, RV, etc by powoxi
- **How much does it cost?** € 104.80 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/578858051-powoxi-upgraded-20w-solar-battery-charger-maintainer-external-smart-3)

## Best For

- powoxi enthusiasts

## Why This Product

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

## Key Features

- • **Smart Battery TLC:** Advanced 3-stage PWM controller with STM8 microprocessor optimizes charging, extending battery lifespan by 20-30%.
- • **Intuitive LED Status:** Multi-color LED indicators provide real-time insights into charging status, so you’re always in control.
- • **Versatile USB Output:** Integrated SAE to USB cable lets you power your phone or gadgets directly from the sun—perfect for on-the-go pros.
- • **Built for All Conditions:** Robust all-round protections guard against overcharge, short circuits, and polarity errors, ensuring safe year-round use.
- • **Harness Peak Solar Power:** 20W single-crystal silicon panel delivers reliable energy rain or shine, keeping your 12V battery perpetually charged.

## Overview

The POWOXI 20W Solar Battery Charger is a cutting-edge, portable solar panel with a patented 3-stage PWM charge controller designed to maintain 12V batteries efficiently. Featuring a durable single-crystal silicon panel, USB charging capability, and comprehensive safety protections, it’s engineered for cars, boats, motorcycles, and RVs. Its smart microprocessor boosts power output by up to 30%, while intuitive LED indicators keep you informed. Ideal for professionals who demand reliable, eco-friendly power solutions on the move.

## Description

desertcart.com: POWOXI-Upgraded-20W-Solar-Battery-Charger-Maintainer, External Smart 3-Stages PWM Charge Controller, 12V Solar Panel Trickle Charging Kit for Car, Marine, Motorcycle, RV, etc : Patio, Lawn & Garden

Review: Good value, works as intended. - So far so good. I have this sitting on the hood of an 81 Toyota pickup for the past 3 weeks in Phoenix. It has dealt with the heat no problem, made it through two thunderstorms, and has kept the battery topped up. I usually start the truck once every weekend, and let it run for an hour or so to charge, so this saves me the trouble. Easy to use, plug and play essentially, just stuck it to the hood, and ran the wires through the front grille. For as inexpensive as it is, it has held up well. Indicator light is difficult to see during the day, but works properly. And most importantly it has not overcharged, or discharged the battery.
Review: KEEP IT ENERGIZED! ⚡️ - I was skeptical about this battery tender so I waited to write a review, so far this thing is a beast. I am using it on my skidsteer and so far, so good. The suction cups keep it secure even when running full production, the machine fires right up on cold mornings without any lag. Also solar panel has withstood the Arizona sun. I am ordering two more for the boat!

## Features

- 【Latest Design In 2023】: 20-watt high-efficiency single- crystal silicon solar charger, can generate electricity in any weather. It’s easy to carry and install with simple and generous appearance.Supporting on the ground can receive better sunlight with mounting bracket. It converts sunlight into electricity and maintain your 12-volt battery perennially .US PATENT PENDING!
- 【USB Charging Capability】Elevating your solar experience, our product now includes an SAE to USB charging cable. This feature allows you to directly charge your mobile devices using the solar panel. Whether you're on a camping trip, outdoor adventure, or facing an emergency, harness the power of the sun to keep your devices charged and stay connected. Embrace the convenience of renewable energy with the added versatility of USB charging.
- 【Intelligent Charging and Maintenance】:External intelligent 3-stage PWM charging controller adopts fast charging, upgrade charging and floating charging. It generates at least 20%-30% more power than traditional controller. It is equipped with an industrial STM 8 microprocessor, which can intelligently control charging, prolong battery life, and charge and maintain batteries better in all seasons.
- 【All-Round Protection】:The solar charger has many protective functions, such as preventing battery from overcharging, overvoltage protection, short circuit protection and polarity reversal protection. The charging controller stops all work at night, doesn’t consume electricity, and starts work automatically in the daytime. Safe maintenance of batteries in all seasons to prolong service life.
- 【LED Indicator】: LED Indicator helps to observe the working state intuitively and understand the battery condition better. Both blue and red indicator lights are on means that it is charging with the battery. Blue, red and green indicators are on at the same time, which means the battery is fully charged.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C3HDCGHT |
| Best Sellers Rank | #432 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1 in Solar Battery Chargers & Charging Kits |
| Customer Reviews | 4.4 4.4 out of 5 stars (7,906) |
| Date First Available | April 25, 2023 |
| Item Weight | 5.49 pounds |
| Item model number | ABS-20W-Large |
| Manufacturer | POWOXI |
| Product Dimensions | 14.76 x 1.89 x 9.06 inches |

## Product Details

- **Brand:** POWOXI
- **Color:** Black
- **Item Weight:** 2.5 Kilograms
- **Output Voltage:** 18 Volts
- **Product Dimensions:** 14.76"D x 1.89"W x 9.06"H

## Images

![POWOXI-Upgraded-20W-Solar-Battery-Charger-Maintainer, External Smart 3-Stages PWM Charge Controller, 12V Solar Panel Trickle Charging Kit for Car, Marine, Motorcycle, RV, etc - Image 1](https://m.media-amazon.com/images/I/81CeOe4XJYL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good value, works as intended.
*by M***. on August 23, 2025*

So far so good. I have this sitting on the hood of an 81 Toyota pickup for the past 3 weeks in Phoenix. It has dealt with the heat no problem, made it through two thunderstorms, and has kept the battery topped up. I usually start the truck once every weekend, and let it run for an hour or so to charge, so this saves me the trouble. Easy to use, plug and play essentially, just stuck it to the hood, and ran the wires through the front grille. For as inexpensive as it is, it has held up well. Indicator light is difficult to see during the day, but works properly. And most importantly it has not overcharged, or discharged the battery.

### ⭐⭐⭐⭐⭐ KEEP IT ENERGIZED! ⚡️
*by C***H on December 28, 2025*

I was skeptical about this battery tender so I waited to write a review, so far this thing is a beast. I am using it on my skidsteer and so far, so good. The suction cups keep it secure even when running full production, the machine fires right up on cold mornings without any lag. Also solar panel has withstood the Arizona sun. I am ordering two more for the boat!

### ⭐⭐⭐⭐⭐ Awesome charger
*by C***S on December 27, 2025*

Works great. Added magnets to the bottom to secure on my skid steer

## Frequently Bought Together

- POWOXI-Upgraded-20W-Solar-Battery-Charger-Maintainer, External Smart 3-Stages PWM Charge Controller, 12V Solar Panel Trickle Charging Kit for Car, Marine, Motorcycle, RV, etc
- OYMSAE 25Feet SAE to SAE Extension Cable Quick Disconnect Connector 16AWG,for Automotive,Solar Panel Panel SAE Plug(25FT(16AWG)), Charging Adapter
- POWOXI Solar Panels Charge Controller, 8A Battery Regulator for 12V Solar Battery Charger, Solar Battery Maintainer and 12 Volt Batteries Power Kit

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-03*