---
product_id: 279820161
title: "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: "95657CFA"
currency: XOF
in_stock: true
reviews_count: 13
category: "Suner Power"
url: https://www.desertcart.sn/products/279820161-waterproof-12w-12v-solar-battery-charger-and-maintainer-pro-built
store_origin: SN
region: Senegal
---

# 12W Power Output Waterproof & Weatherproof UltraSmart MPPT 99% Tracking 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:** 95657CFA
**Availability:** ✅ In Stock

## Summary

> 🔆 Power your adventures with smart, worry-free solar charging!

## Quick Answers

- **What is this?** 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?** 95657CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/279820161-waterproof-12w-12v-solar-battery-charger-and-maintainer-pro-built)

## 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

- • **Plug & Play Simplicity:** Instant start with pre-drilled mounting holes and included suction cups—get your solar charger up and running in minutes.
- • **Universal Compatibility:** Seamlessly powers 12V sealed lead-acid, AGM, gel, lithium, and deep-cycle batteries across cars, boats, RVs, motorcycles, and more.
- • **Maximize Your Battery Life:** Advanced 3-stage charging (Bulk, Absorption, Float) ensures safer, longer-lasting battery performance.
- • **Built to Brave the Elements:** Durable tempered glass and corrosion-resistant frame withstand UV, hail, sandstorms, and heavy rain for year-round reliability.
- • **Effortless Solar Maintenance:** Smart trickle charging automatically stops and resumes to keep your battery perfectly topped off—zero hassle, zero maintenance.

## 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 improved 3-stage charging algorithm maximizes battery health and lifespan while providing full safety protections including waterproofing and spark-proof design. Compatible with a wide range of 12V batteries, this durable, weather-resistant solar panel is perfect for automotive, marine, RV, and outdoor power needs, offering effortless plug-and-play installation and maintenance-free operation.

## Description

Product description As we all know, batteries naturally drain power and if allowed to go flat, may never regain their full power. This product is a solar powered battery maintainer and charger for 12V batteries and helps manage battery drain in all season. The solar charger converts light energy from the sun into 12 volt DC electricity which is then transported to the rechargeable batteries through lead wire and connector of choice, replace the self-discharge of a battery in storage, so that the battery wouldn't "go dead". It can be used for cars, 4WD’s, trucks, motorcycle, marine, boats, farm equipment or any application where a 12V battery is used. The high efficient solar panel allows to absorb a wider spectrum of the sun light, as long as there is sufficient sunlight available, the charger will generate an electrical current to trickle charge battery. The charger is built in the most super intelligent MPPT(Maximum Power Power Tracking) chip to intelligently charge and fully protect battery. The MPPT technology helps to generates at least 20%-30% more power than traditional PWM. And the LED indicator helps better understand the charging statue in all days. Visual LED Indicator The led indicator allow to clearly monitor working status Blink Green: Sunshine is effective (Not Acitve yet) Blink Red: Working to charge battery (Activated) Solid Green: Battery is fully charged Solid Red: Error-Reversed polarity High Efficiency Solar Cells Made of high efficiency, 30% more than competitors, works great in sunlight. The surface was covered by tempered solar glass, protecting the solar cells from snow, hail, dust, etc. IP65 Waterproof IP 65 waterproof design, withstand rain and snow, no worry to mount it outside, totally free maintenance.

Review: Tips for Maximum Effectiveness with Your SUNER POWER 12V Solar Battery Maintainer - 5-Star Review: ⭐⭐⭐⭐⭐ Best Solar Battery Maintainer I’ve Ever Used – Truly Set It and Forget It! I picked up this SUNER POWER 12V solar charger maintainer for my car battery here in Pennsylvania, and it has been outstanding. The plug-and-play setup was ridiculously easy — multiple connectors included, suction cups for quick mounting, and it started charging the moment I hooked it up. No complicated wiring or settings required. The Ultra-Smart MPPT technology really delivers. Even on our cloudy and rainy days it keeps producing power, and it charges year-round without any issues. The 3-stage charging (Bulk, Absorption, Float) is smart — it tops the batteries off perfectly and then switches to maintenance mode so there’s zero risk of overcharging. My batteries have stayed at full voltage for months now with basically no effort on my part. Tips I’ve learned for maximum effectiveness: • I mounted mine south-facing with a slight tilt (around 35-45 degrees) and it gets great sun exposure. I wipe it clean every couple of weeks to keep the high-efficiency solar cells performing at their best. • Connecting directly to the battery terminals gives the strongest charge. I leave it on my boat and RV all season — rain, snow, or shine — and it just works. • For winter storage or vehicles that sit a lot, this thing is perfect. It automatically stops when the battery is full and resumes when needed. True maintenance-free operation. How I test it with my multimeter (super easy): I check it every few weeks to confirm it’s working great. Set my multimeter to DC Volts and measure across the battery terminals — a healthy battery sits at 12.6–12.8V when fully charged. After the maintainer has been on for a bit in the sun, I see it climb and then stabilize nicely in the 13.2–13.8V range on float. For current, I switch to DC Amps (10A setting), put the meter in-line on the negative side, and in good sunlight I usually see 0.2+ amps flowing in. Even on overcast days I still get a useful trickle. If you’re getting near zero in bright sun, just double-check your connections and panel angle. This maintainer works with everything — flooded, AGM, gel, and LiFePO4 batteries. The build quality is solid, the safety protections are comprehensive, and it’s survived everything Pennsylvania weather has thrown at it so far. If you hate dealing with dead batteries or constantly dragging out a charger, get this. It’s been one of the smartest and most useful purchases I’ve made for my vehicle. Worth every penny — highly recommended!
Review: Suner Power 12W 12V Solar Battery charger Pro - 2 month review - I have a late model 5th gen 4Runner, purchased new. It isn't driven very often: after two years, it has amassed a whopping 3000 miles :) Great vehicle for me, but unfortunately, the telematics on this vehicle (SOS button, auto dial in the event of a serious crash, etc.) pre-dispose it to parasitic battery drain. This is a common problem for these vehicles if driven infrequently, a Toyota problem; my 15 yr old Ford P/U has similar telematic features but cranks without fail, even though it gets the same intermittent use. After replacing the battery twice on a virtually new car, I tried this solar charger. I've had it going on three months now. I leave it connected to the terminals and disconnect it quickly, using the quick disconnect lead included by the manufacturer. It stores easily in the seat pocket behind the driver seat. Compact, weatherproof and durable with nothing to switch on/off, it comes with an led indicator to show what it's doing once connected. Blinking green shows 'ready' and blinking red indicates current is flowing to the battery. Circuitry prevents over charging. As simple as that to use. I monitor the charging performance and battery state using an Ancel BM300 Bluetooth Battery Monitor ($35 on desertcart) which sends info to my cell phone at designated intervals or on demand. The battery is always topped off and ready to go. Problem solved. The desertcart listing shows suction cups that permit sticking the panel to a suitable surface while in use. I didn't receive suction cups with my charger (an omission, I believe) but that's not a problem. I affixed four coin-sized magnets to the reverse side which secures it to the hood or roof when in my driveway. If using it in a less secure location, I would keep it inside the vehicle, flat on the dash. The harness has a generous length, making routing to different spots simple. Would I purchase this again? Yes. 5 stars for simplicity, performance and ease of use.

## 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
- 【Superior Quality and Material】Made of premium Grade A+ solar cells with efficiency up to 21%-30%, tempered solar glass and durable corrosion-resistant frame, withstand extreme weather conditions like UV, anti-rusting, erosion, hail, and sandstorm
- 【Easy to Use】Using the most advanced MPPT technology, this 12 volt solar battery charger starts charging immediately when it detects a battery. Pre-designed holes allow for quick mounting with included suction cups, and all cables are plug and play, offering easy and quick using experience

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08K2T4RPH |
| Best Sellers Rank | #2,504 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #2 in Solar Battery Chargers & Charging Kits |
| Brand | SUNER POWER |
| Color | Navy Blue |
| Compatible Devices | Car batteries, Motorcycle batteries, Marine batteries, Deep-cycle batteries |
| Connector Type Used on Cable | DC power connector |
| Customer Reviews | 4.5 out of 5 stars 2,333 Reviews |
| Input Voltage | 18 Volts (DC) |
| Item Dimensions D x W x H | 16.5"D x 9.4"W x 0.6"H |
| Manufacturer | SUNER POWER |
| Mfr Part Number | BC-50W-P |
| Model Number | BC-50W-P |
| Number of Ports | 1 |
| Output Voltage | 12 Volts (DC) |
| Product Dimensions | 16.5"D x 9.4"W x 0.6"H |
| Specification Met | UL, CE |
| Unit Count | 1.0 Count |

## 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

![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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Tips for Maximum Effectiveness with Your SUNER POWER 12V Solar Battery Maintainer
*by M***L on April 23, 2026*

5-Star Review: ⭐⭐⭐⭐⭐ Best Solar Battery Maintainer I’ve Ever Used – Truly Set It and Forget It! I picked up this SUNER POWER 12V solar charger maintainer for my car battery here in Pennsylvania, and it has been outstanding. The plug-and-play setup was ridiculously easy — multiple connectors included, suction cups for quick mounting, and it started charging the moment I hooked it up. No complicated wiring or settings required. The Ultra-Smart MPPT technology really delivers. Even on our cloudy and rainy days it keeps producing power, and it charges year-round without any issues. The 3-stage charging (Bulk, Absorption, Float) is smart — it tops the batteries off perfectly and then switches to maintenance mode so there’s zero risk of overcharging. My batteries have stayed at full voltage for months now with basically no effort on my part. Tips I’ve learned for maximum effectiveness: • I mounted mine south-facing with a slight tilt (around 35-45 degrees) and it gets great sun exposure. I wipe it clean every couple of weeks to keep the high-efficiency solar cells performing at their best. • Connecting directly to the battery terminals gives the strongest charge. I leave it on my boat and RV all season — rain, snow, or shine — and it just works. • For winter storage or vehicles that sit a lot, this thing is perfect. It automatically stops when the battery is full and resumes when needed. True maintenance-free operation. How I test it with my multimeter (super easy): I check it every few weeks to confirm it’s working great. Set my multimeter to DC Volts and measure across the battery terminals — a healthy battery sits at 12.6–12.8V when fully charged. After the maintainer has been on for a bit in the sun, I see it climb and then stabilize nicely in the 13.2–13.8V range on float. For current, I switch to DC Amps (10A setting), put the meter in-line on the negative side, and in good sunlight I usually see 0.2+ amps flowing in. Even on overcast days I still get a useful trickle. If you’re getting near zero in bright sun, just double-check your connections and panel angle. This maintainer works with everything — flooded, AGM, gel, and LiFePO4 batteries. The build quality is solid, the safety protections are comprehensive, and it’s survived everything Pennsylvania weather has thrown at it so far. If you hate dealing with dead batteries or constantly dragging out a charger, get this. It’s been one of the smartest and most useful purchases I’ve made for my vehicle. Worth every penny — highly recommended!

### ⭐⭐⭐⭐⭐ Suner Power 12W 12V Solar Battery charger Pro - 2 month review
*by D***R on July 15, 2024*

I have a late model 5th gen 4Runner, purchased new. It isn't driven very often: after two years, it has amassed a whopping 3000 miles :) Great vehicle for me, but unfortunately, the telematics on this vehicle (SOS button, auto dial in the event of a serious crash, etc.) pre-dispose it to parasitic battery drain. This is a common problem for these vehicles if driven infrequently, a Toyota problem; my 15 yr old Ford P/U has similar telematic features but cranks without fail, even though it gets the same intermittent use. After replacing the battery twice on a virtually new car, I tried this solar charger. I've had it going on three months now. I leave it connected to the terminals and disconnect it quickly, using the quick disconnect lead included by the manufacturer. It stores easily in the seat pocket behind the driver seat. Compact, weatherproof and durable with nothing to switch on/off, it comes with an led indicator to show what it's doing once connected. Blinking green shows 'ready' and blinking red indicates current is flowing to the battery. Circuitry prevents over charging. As simple as that to use. I monitor the charging performance and battery state using an Ancel BM300 Bluetooth Battery Monitor ($35 on Amazon) which sends info to my cell phone at designated intervals or on demand. The battery is always topped off and ready to go. Problem solved. The Amazon listing shows suction cups that permit sticking the panel to a suitable surface while in use. I didn't receive suction cups with my charger (an omission, I believe) but that's not a problem. I affixed four coin-sized magnets to the reverse side which secures it to the hood or roof when in my driveway. If using it in a less secure location, I would keep it inside the vehicle, flat on the dash. The harness has a generous length, making routing to different spots simple. Would I purchase this again? Yes. 5 stars for simplicity, performance and ease of use.

### ⭐⭐⭐⭐⭐ Charging options depend on your car
*by C***N on January 14, 2025*

*** update*** one of my best purchases! Changed it from four stars to five because I had not had it very long. This thing is fantastic! I have an older 2000 4 Runner where if I don't have a stronger battery like an AMD or EFG the battery is dead in three days without driving. There's a constant known drain on these Toyota's. The stronger batteries last about three weeks before they start to slowly disintegrate in charging. After having to get a second EFG battery the mechanic down the street told me to get a solar charger. I read lots of reviews and this is the one that I decided on. I had my portable jumper with me today prepared for the battery to not be working because I literally have not driven it in at least three months! I thought no way!?? But yes, it started up like a perfect brand new battery. I brought the charger on my errands because I thought maybe when I stopped it will discharge but no, it started right up again! I love this thing! Remember if you're gonna let your car sit to have a full tank of gas for the Health of the tank*****I like that the size is not overly obtrusive, and it's got plenty of length in the cords which is a huge plus for me as it doesn't limit where and how I decide to connect the solar panel to my battery. That being said, I have an older 2000 Toyota 4Runner and it's one of the models that does not work with the cigarette lighter which my sister said to use. Her husband used to have a collection of cars including Ferraris and $400,000 Porsches etc. all on trickle chargers but unfortunately I tried that mode and it will only connect while the engine is running which defeats the purpose! The small clamps are covered in cheap plastic and just barely fit around my battery terminals but they seem to work and send a signal. The third option doesn't look like it goes with my traditional type of (EFB) battery even if I unscrew the bolts and put it underneath. I'm not sure so I'm going to have to ask my mechanic because the kind that could just attach to your terminals without clamps. I could leave on and just disconnect and connect at will. The photos show a different type of battery for that straight wire connection so it looks like I am stuck with the clamps. I bought a 4 pack of round Dyi...?(you can find it by searching rubber coated magnets ) that won't rust or hurt my car and actually attach strongly to car. I read a lot of reviews on a lot of different magnets and many of these magnets won't even stick to stainless steel. You can't really attach them to this all on their own so what I did was I glued two of the magnets that are the exact size of the suction cups and added them to one end/side of the back of the board. This magnetized the board very strongly to the top of my roof and I was able to put up an angle on my roof rack. (See pictures ) It's not going anywhere! I don't know if I would want to attach it to my window as I'm not a big believer in suction cups holding in extreme circumstances like the magnets would . I have every confidence that these magnets will work through my car cover when I put that on. I sure wish I could've used the cigarette lighter but cannot so don't expect it to necessarily work on your car or think that it's defective because it doesn't light up on your model. It's charging right now so I will get back in a week or two to see if it stays fully charged. I know some people are recommending that you buy a battery status contraption for another 40+ dollars that if you get Bluetooth and you stand within 30 feet of your car it will give you the status of your battery health. I don't know if I need to go to that extreme. It's for a car that I don't drive that often, either of them that often, so I always have to worry about the battery. I sure hope for the price that this last for a while and from some reviews it seems to kind of be hit or miss so check the status light fairly frequently.

## 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

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

---

*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-06-19*