SUNER POWER 30W 12V Solar Battery Charger Maintainer, Built-in Smart MPPT Charge Controller, Adjustable Mount Bracket, Waterproof 30 Watt Solar Panel Kits for Car Automotive Boat Marine RV Trailer
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Availability:
In Stock.
Arrives
Sunday, Oct 5
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Size: BC-30W-P
Features
- Smart MPPT Technology This 12v solar panel battery charger is crafted with SUNER POWER's unique Ultra-Smart MPPT technology, the innovative MPPT ( Max Power Point Tracking) 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 ChargingThe 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 MaintenanceThe 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 ProtectionsBuilt-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 CompatibilityIt'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 MaterialMade 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 UseUsing the most advanced MPPT technology, this 12 volt solar battery charger starts charging immediately when it detects a battery. Pre-drilled holes allow for quick mounting with included mounting brackets, and all cables are plug and play, offering easy and quick using experience.
Brand: SUNER POWER
Material: Aluminum, Tempered Glass
Product Dimensions: 24"L x 13.8"W x 0.7"H
Item Weight: 3.58 Kilograms
Efficiency: High Efficiency
Brand: SUNER POWER
Material: Aluminum, Tempered Glass
Product Dimensions: 24"L x 13.8"W x 0.7"H
Item Weight: 3.58 Kilograms
Efficiency: High Efficiency
Included Components: ➤1 x 30W Solar Panel with Built-in MPPT Charge Controller, ➤1 x Adjustable Mounting Brackets, ➤1 x SAE-Alligator Clip Cable, ➤1 x SAE-Bare End Cable, ➤1 x SAE-Battery Eyelet Cable
Maximum Voltage: 12 Volts
Maximum Power: 30 Watts
Special Feature: Adjustable,Short,Waterproof
Output Voltage: 12 Volts
Item Weight: 7.88 pounds
Manufacturer: SUNER POWER
Item model number: BC-30W-Ultra
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Oct 5
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: BC-10W-P
We have been using this solar panel to charge 12 volt batteries on three of our cellulartrail camera stations and have had zero issues so far. Batteries stay 100% full at all times. Never have to touch them. We recommend.
Reviewed in the United States on September 8, 2025 by Keith Dennis Keith Dennis
Size: BC-10W-P
This is magic. I rerouted all the electricity on my boat to go to a house battery (a 5 year old deep cycle battery!) which is being maintained with this thing. Works like a charm and a million times easier to deal with. The controller is built in so you just hook it to the battery and off you go. Love love love it. Very easy to mount and very efficient.
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Reviewed in the United States on July 2, 2025 by Bill S.
Size: BC-10W-P
Works fine for my lawnmower but did not keep my motorcycle battery charged. I ended up buying the 30w version and it seems to be trickle charging my motorcycle battery fine.
Reviewed in the United States on December 15, 2023 by Michael T. Warren
Size: BC-10W-P
The battery was fully charged the first day. The mounting stand is head and shoulders better than any other charger I viewed. I gave it a five star, but there is one thing they could improve on. The cord that connects to the battery is about 2 feet short, the battery in my boat is on the opposite side of the boat dock that the sun shines, and the cord was slightly short, and I had to get a replacement cord that was long enough. That being said it’s still worth the five stars
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Reviewed in the United States on March 22, 2025 by Deacon John
Size: BC-10W-P
There's a lot of bang for the buck with this unit. To power my telescope I use (2) six volt sealed lead acid batteries used in series for 12 V to power a simple cooling fan and a small computer (DSC) used to find astronomical objects. After a night of viewing, a small (12 V, 10 Watts) solar charger is the perfect way for me to recharge the batteries while I sleep during the day. This little unit comes with a built in charge controller (you buy this extra on a lot of solar panels) This maximizes the charging cycle and prevents nasty things from happing. For example short circuits, overcharge protection (turns off when battery fully charged), parasitic back charge (power back to the panel when not illuminated) and will not charge an inadequate battery. I had a personal issue with my battery being bad and the unit not working. I reached their technical service department by email and John was great at helping me resolve the issue. Tested the unit with new batteries and it worked perfectly. The instruction sheet was missing the information that would have been useful for identifying how the unit would act trying to charge a bad battery. Things do get lost in translation sometimes. Bottom line, Excellent unit, Excellent customer service!
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Reviewed in the United States on October 13, 2019 by KS, Arvada
Size: BC-20W-P
I have 24 volt version of this and it’s worked flawlessly. This 12 volt version not so. Installed it on a 12 volt deep cycle, fully charged, battery and it would not charge. Very disappointed.
Reviewed in the United States on August 29, 2025 by Chester A Czubko Jr Chester A Czubko Jr
Size: BC-10W-P
The stand that holds this 10 watt solar panel is nothing short of excellent. It was a little tricky to set up in part because the directions are a bit confusing. They mention what the parts are but they don't quite explain which part goes where in an easy to understand manner. This may seem silly to them but this is not my first rodeo when it comes to setting up solar panels. The best part of this is how easy it is to arrange and secure the direction the panel needs to be facing. This is not easy with some fixed bracket systems. This gets around all of that. I set this up on the railing to my porch facing due south at an approximate 30° angle. The battery is being charged beautifully. If they ever come up with a 25 watt solar panel with the same bracket I would easily buy two to three more. To me the support bracket is the major selling point. The ball joint that they've included is not cheap by any means and holds everything perfectly still. It comes with an allen wrench that allows the user to fix it in place exactly where you think you'll get the most sunlight. I still may buy another one but I just wish the panel was at around 25 watts.
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Reviewed in the United States on October 29, 2024 by WorldTraveler
Size: BC-10W-P
I have purchased this Sunerpower solar powered trickle charger to charge my boat battery off-season without removing the battery and putting it on a battery tender in the garage as I used to. I had been using the Deltran 15w Battery Tender solar trickle charger ($140) until a tree branch fell down and shattered its glass. This unit looked appealing due to the more traditional solar panel mount, which as you can see in my picture is on a tree next to the boat. I like that I can bend the bracket to fit the tree and angle the charger up to the sun. Upon installation, as many other reviewers have commented, the charge light was solid red indicating reversed polarity to the wires. My boat battery is connected with standard SAE connectors and extension cables (red+, black-) and I never had an issue with the Deltran. According to my volt meter, those wires read -12.86V, so it's actually the SAE extension cable reversing the polarity not the Sunerpower unit itself. To fix this there are three options: reverse the leads at the battery so that the red+ is on the negative battery terminal and vise versa; purchase a SAE reverse polarity adapter off Amazon ($6 for two); or use the included cables that come with the Sunerpower unit. As I didn't want the hassle of undoing my winterized boat cover to get to the battery and considering I prefer to use the extension cables exactly as they are, I chose the cheap Amazon adapter (see picture of tree) which arrived in 1 day. Immediately the charger was fast blinking red indicating active charge, and within a day with decent sunlight, the charger turned green indicating a full charge to the boat battery (see picture). What more could I ask for? So buyer do note that this unit is quite simple and nice and hopefully sufficient to charge and maintain a single deep cell battery, and I like the ability to view the charge status underneath which I couldn't do with the Deltran unit. But unless you use the supplied cables, you will most likely need to reverse the polarity on the wires which is a very simple fix. PURCHASE THIS UNIT WITH A SAE REVERSE POLARITY ADAPTER. Happy charging.
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Reviewed in the United States on December 31, 2020 by Jeffrey Joseph Jeffrey Joseph