---
product_id: 76625876
title: "3.3 watt-Pro"
brand: "powoxi"
price: "2189578₫"
currency: VND
in_stock: null
reviews_count: 8
url: https://www.desertcart.vn/products/76625876-3-3-watt-pro
store_origin: VN
region: Vietnam
---

# Waterproof & impact-resistant design 3.3W power for steady trickle charging 25-30% solar conversion efficiency 3.3 watt-Pro

**Brand:** powoxi
**Price:** 2189578₫
**Availability:** ❌ Out of Stock

## Summary

> ☀️ Charge smarter, drive farther—never get stranded again!

## Quick Answers

- **What is this?** 3.3 watt-Pro by powoxi
- **How much does it cost?** 2189578₫ with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/76625876-3-3-watt-pro)

## 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

- • **Effortless Setup:** Plug-and-play design fits any 12V vehicle socket or battery clips—no mechanic needed.
- • **Rugged Durability:** High-strength tempered glass and ABS+PC frame resist impacts, weather, and scratches—built to last.
- • **Smart Solar Efficiency:** Harness up to 30% energy conversion with premium silicon tech for faster, stable charging.
- • **Built-in Battery Safety:** Advanced internal protection prevents overcharging and short circuits—charge with confidence.
- • **Versatile Power Solution:** Perfect for cars, motorcycles, boats, RVs, and more—keep your battery topped off anywhere.

## Overview

The POWOXI 3.3W Solar Battery Trickle Charger is a portable, waterproof 12V solar panel kit designed to maintain and extend battery life across vehicles like cars, motorcycles, boats, and RVs. Featuring a high-efficiency solar silicon panel with 25-30% energy conversion, a smart internal protection system to prevent overcharging, and a durable tempered glass and ABS+PC frame, it offers reliable, maintenance-free solar charging wherever you go.

## Description

Full description not available

## Features

- Upgrade Intelligent Charge Controller: Built-in internal protection system and smart fast charging Cooperate with Quality solar silicon material ensures high conversion and stable output the solar panel's energy conversion efficiency to 25-30%
- Smart Internal Protection System: From POWOXI technology Solar battery charger will not damage the battery and overcharge. The built-in smart protection system and blocking diode structure ensures no overvoltage and short circuit. Make charging safer
- Stronger & More Long-lasting: The 3.3W solar car battery charger adopts high-transparency glass, which is high-strength, impact-resistant, wind-snow-resistant low-iron tempered. This waterproof solar battery charger needs no additional maintenance
- Scratch Protection Design: The ABS+PC frame is stronger than flexible solar panels, so there's no need to worry about the solar panels bending. Aluminum alloy may damage the car paint, but with the ABS+PC frame, for durability this is not a concern
- Easy to Install and Use: The solar battery maintainer is easy to install, and convenient to use, just insert it in the car power outlet, as known as the cigar lighter socket or connect the solar panel to the battery with the alligator clips directly

## Product Details

- **Brand:** POWOXI
- **Color:** Solar Powered Battery Chargers 3.3w
- **Product Dimensions:** 14.76"D x 1.89"W x 9.06"H
- **Item Weight:** 1 Kilograms
- **Output Voltage:** 12 Volts

## Images

![3.3 watt-Pro - Image 1](https://m.media-amazon.com/images/I/71fHMNntaVL.jpg)

## Available Options

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

## Questions & Answers

**Q: What types of batteries it can maintain?**
A: POWOXI solar battery charger is suitable for maintain any rechargeable 12V Batteries.( lncluding Lithium-ion, LiFePO4, Gel,AGM, etc.)

**Q: Do I need to disconnect while driving?**
A: You don't need to disconnect. Our solar panel has overcharge protection circuitry built into the panel, prevent reverse charging.

**Q: Can solar panel charge car battery through a cigarette lighter when the car is off?**
A: Most cars can be charged with a cigarette lighter when the engine is turned off.  When it is found that the cigarette lighter can not be used to recharge the battery. You can use alligator clips and cables to connect directly to the battery.

**Q: How to know if the solar panel charger is working?**
A: In full sunlight, the solar panel shows a red light. Connect the battery, turn green. If there are no lights, check the polarity.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works as promised. If you go on vacation it will keep your battery charged.
*by M***C on July 9, 2025*

We went out of town on vacation for three weeks. I was concerned with the car sitting in the driveway, not being driven. I added this to the back window and it kept the battery fully charged when I came home. It started up perfect strong and maintained the battery very surprised and very happy with this product. It’s not too big and it’s not too small. It’s the perfect size it took up 60% of our Nissan rogue back window I will continue to use this.

### ⭐⭐⭐⭐⭐ Great product!
*by M***E on June 27, 2025*

This solar battery maintainer saved my battery. I haven’t been driving my car much for the past 3 months, and it’s been mostly parked. A couple times a week I will move my car so it doesn’t get towed, but other than that it is always parked. Apparently not driving drains the battery. I had to jump it a few times and finally took it into an AutoZone thinking I needed a new battery. They tested the battery and told me it was still good. It was frustrating still having to jump it every week, so after a few chat gpt questions, I decided to try a battery maintainer it recommended to see if that would prevent it from draining. I park on the street and can’t plug it into an outlet, so I bought the solar powered one. I figured I would try it before giving up completely and spending $350 on a new battery. It was the best $40 I ever spent. My car cigarette lighter shuts off when the car is off so I had to clip it directly onto the battery. The clips fit perfectly and easily. The mounting cups allow me to mount it to my interior windshield. It comes off very easily when I need to drive and stores nearly inside it’s pouch. It’s been over a month now, and I have not had to jump my car not even once. I still only drive on occasion, but I’m super happy I don’t have to wonder if my car will start when I’m ready to leave. Highly recommend it.

### ⭐⭐⭐⭐⭐ Great, as far as I can tell
*by N***D on April 25, 2025*

Have used it over the course of a few days while on a vacation. I unfortunately have an IID interlock device on my vehicle for the next several months and it has once killed the battery over a period of just 2 days of non-use. This trickle maintainer seems to have kept that from happening on a 4 day span plugging it into my cigarette lighter. Truck started up without issue. There is a charge indicator light that illuminates green when getting solid sunlight , yellow for partial, and will go dark if not receiving light. It helps create peace of mind on not needing to purchase another battery in the dead of winter or need to pay a “reset” fee on the interlock.Pretty cheap, and simple to use. Happy purchase.

## Frequently Bought Together

- Solar Car Battery Trickle Charger, 12V 3.3W Solar Battery Charger Car, Waterproof Portable Amorphous Solar Panel For Automotive, Motorcycle, Boat, Atv,Marine, RV, Trailer, Powersports, Snowmobile, etc
- KUNCAN 25FT Sae to Sae 2 Pin Extension Cable DC Power 16awg Heavy Duty Battery Quick Disconnect/Connect Wire Harness with Sae Connectors with Dust Cap…
- Dongge SAE Connector Motorcycle Battery Charger SAE Charging Cable SAE Quickly cuts The Plug to The 12V Ring Terminal Fuse Suitable for Charging Motorcycles Tractors Cars etc

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**Shop now:** [https://www.desertcart.vn/products/76625876-3-3-watt-pro](https://www.desertcart.vn/products/76625876-3-3-watt-pro)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-09*