---
product_id: 279820161
title: "SUNER POWER Waterproof 12W 12V Solar Battery Charger & Maintainer Pro, Built-in UltraSmart MPPT Charge Controller, 12 Volt Solar Panel Trickle Charging Kits for Car Automotive Boat Marine RV Trailer"
brand: "suner power"
price: "€ 140.51"
currency: EUR
in_stock: true
url: https://www.desertcart.fi/products/279820161-suner-power-waterproof-12w-12v-solar-battery-charger-and-maintainer
store_origin: FI
region: Finland
---

# 12W high-efficiency solar power Waterproof & spark-proof durability UltraSmart MPPT tech with 99% tracking SUNER POWER Waterproof 12W 12V Solar Battery Charger & Maintainer Pro, Built-in UltraSmart MPPT Charge Controller, 12 Volt Solar Panel Trickle Charging Kits for Car Automotive Boat Marine RV Trailer

**Brand:** suner power
**Price:** € 140.51
**Availability:** ✅ In Stock

## Summary

> 🔆 Power up smarter, stay charged longer — never miss a beat!

## Quick Answers

- **What is this?** SUNER POWER Waterproof 12W 12V Solar Battery Charger & Maintainer Pro, Built-in UltraSmart MPPT Charge Controller, 12 Volt Solar Panel Trickle Charging Kits for Car Automotive Boat Marine RV Trailer by suner power
- **How much does it cost?** € 140.51 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/279820161-suner-power-waterproof-12w-12v-solar-battery-charger-and-maintainer)

## Best For

- suner power enthusiasts

## Why This Product

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

## Key Features

- • **Safety First, Always:** Comprehensive protections including overcharge, short circuit, reverse polarity, and temperature safeguards.
- • **Set & Forget Maintenance:** Automatic trickle charging stops and resumes to keep your battery healthy without any hassle.
- • **Smart 3-Stage Battery Care:** Advanced Bulk, Absorption, and Float charging extends battery life and optimizes performance.
- • **Built for All Your Adventures:** Compatible with a wide range of 12V batteries—cars, boats, RVs, motorcycles, and more.
- • **Maximize Your Charge Efficiency:** UltraSmart MPPT tech boosts power conversion up to 98%, outperforming competitors by 20-30%.

## Overview

The SUNER POWER 12W 12V Solar Battery Charger & Maintainer Pro features cutting-edge UltraSmart MPPT technology delivering up to 99% tracking efficiency and 98% peak conversion. Its intelligent 3-stage charging algorithm ensures optimal battery health and longevity. Fully waterproof and equipped with multiple safety protections, this solar panel is compatible with a broad range of 12V batteries across automotive, marine, and recreational vehicles, providing reliable, maintenance-free power wherever you go.

## Description

SUNER POWER Waterproof 12W 12V Solar Battery Charger & Maintainer Pro, Built-in UltraSmart MPPT Charge Controller, 12 Volt Solar Panel Trickle Charging Kits for Car Automotive Boat Marine RV Trailer

## Features

- 【Ultra-Smart MPPT Technology】This 12v solar panel battery charger is crafted with SUNER POWER's unique Ultra-Smart MPPT( Max Power Point Tracking) technology, the innovative MPPT allows to deliver high tracking efficiency of up to 99% and peak conversion efficiency of 98%, improving approximately 20%-30% utilization rate than other competitors
- 【Improved 3-stages Charging】The improved 3-Stages charging algorithm (Bulk, Absorption, Float) allows to charge 12-volt battery more effectively, ensures battery is safely recharged and increases battery life and performance
- 【Free Maintenance】The solar trickle charger stops charging when battery has full charge, and automatically resumes when battery has discharge, totally free maintenance. A fully-automatic, worry-free and smart 12volt solar charger
- 【Full Safety Protections】Built-in multiple protections including over-charge, over-discharge, over-voltage, over-current, over-load, short circuit, reverse polarity, and over-temperature, waterproof and spark-proof, the battery is fully protected
- 【Wide Compatibility】It's not just a solar powered battery charger, it's an advanced solar battery maintainer for 12-volt sealed lead-acid car, automotive, marine, RV, power sport, boat, dump trailer, motorcycle, trolling motor, tractor, ATV and deep-cycle batteries, including flooded, gel, AGM, SLA and maintenance-free, plus lifepo4 lithium batteries

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | SUNER POWER |
| Part Number | BC-50W-P |
| Item Weight | 3.21 pounds |
| Product Dimensions | 16.5 x 9.4 x 0.6 inches |
| Item model number | BC-50W-P |
| Size | BC-12W Pro |
| Color | Navy Blue |
| Material | Abs |
| Voltage | 12 Volts |
| Wattage | 12 watts |
| Maximum Power | 12 Watts |
| Batteries Included? | No |
| Batteries Required? | No |
| Battery Cell Type | Lithium Ion |

## Product Details

- **Brand:** SUNER POWER
- **Color:** Navy Blue
- **Product Dimensions:** 16.5"D x 9.4"W x 0.6"H
- **Output Voltage:** 12 Volts (DC)
- **Input Voltage:** 18 Volts (DC)

## Images

![SUNER POWER Waterproof 12W 12V Solar Battery Charger & Maintainer Pro, Built-in UltraSmart MPPT Charge Controller, 12 Volt Solar Panel Trickle Charging Kits for Car Automotive Boat Marine RV Trailer - Image 1](https://m.media-amazon.com/images/I/81qs8VFJiWL.jpg)

## Available Options

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

## Questions & Answers

**Q: How many amps does the bc-5w pro generate?**
A: Max 0.27Amps for 5W; 0.56amps for 10w and 0.67amps for 12w

**Q: I plan on connecting this to our tractor full time. Can i still drive it without disconnecting it?**
A: Absolutely! Mine stays connected to my truck battery all the time and it works great! I live on an island and there are gaps between driving so this keeps my battery charged and ready when I get back to the island. I liked it so much I bought one for each of my vehicles.

**Q: Does this require a battery tender. I have a couple other solar charger which must have a tender to prevent overcharging**
A: Unlike other regular solar charger, the solar charger was built-in intelligent mppt charge controller chip to prevent over charge, over voltage, short circuit, no addtional battery tender is required.

**Q: The indicator light turned off and and it is almost dark. Does this mean**
A: The LED indicator is powered by sunlight, it will not come on if sunlight is not sufficient. Expose the solar panel to full sun, see if the light comes on? If not, pls get back to our support team thru email support@sunerpower.com

## Frequently Bought Together

- SUNER POWER Waterproof 12W 12V Solar Battery Charger & Maintainer Pro, Built-in UltraSmart MPPT Charge Controller, 12 Volt Solar Panel Trickle Charging Kits for Car Automotive Boat Marine RV Trailer
- OYMSAE 25Feet SAE to SAE Extension Cable Quick Disconnect Connector 16AWG,for Automotive,Solar Panel Panel SAE Plug(25FT(16AWG)), Charging Adapter
- LST 6FT 12V Ring Terminal SAE to O Ring Connecters Extension Cord Cable Connector for Battery Charger/Maintainer

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**Shop now:** [https://www.desertcart.fi/products/279820161-suner-power-waterproof-12w-12v-solar-battery-charger-and-maintainer](https://www.desertcart.fi/products/279820161-suner-power-waterproof-12w-12v-solar-battery-charger-and-maintainer)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-03*