SUNER POWER Waterproof 12W 12V Solar Battery Charger & Maintainer Pro, Built-in UltraSmart MPPT Charge Controller, 12 Volt So

4.5 4.5 out of 5 stars | 2,040 ratings

Price: 59.94

Last update: 01-11-2025


About this item

【 UltraSmart MPPT Technology 】This 12v solar panel battery charger is crafted with SUNER POWER's unique UltraSmart MPPT technology, so all of its core parts, including its mppt charge controller and solar panel are built using premium and durable materials. The innovative MPPT-Charge-Controller-Technology allows to deliver high tracking efficiency of up to 99% and peak conversion efficiency of 98%, improve 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. The charging will be cut off when battery is fully charged, and automatically resumed when battery is not full, totally free maintenace.
【 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 battery trickle charger, it's an advanced solar battery charger maintainer. A fully-automatic, worry-free smart solar battery charger for 12-volt sealed lead-acid car, automotive, marine, RV, powersport, 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, and erosion, hail, and sandstorm, up to 2400Pa wind pressure and 5400Pa snow load.
【 Easy to Use 】Using the most advanced MPPT charge controller chip, this solar trickle battery charger maintainer starts to charge immediately when battery is registered. Pre-designed holes on solar panel frame allows for quick mounting with included scution cups, and all cables are plug and play, offering you easy and quick using experience.

Product information

Technical Details


Top reviews from the United States

oldman Jlo
5.0 out of 5 stars Excatly what I needed!
Reviewed in the United States on May 8, 2024
I use this to keep our boat batteries charged while out on the water since they are waterproof and love the trickle feature to keep them topped off when the boat is at the house! Very easy to use both the alligator and ring connectors that come with the set since they both have SAE connections on one end. Very nice!
Armando D.
5.0 out of 5 stars Well built, powerful, built-in controller with a useful status LED. Great company support.
Reviewed in the United States on August 15, 2023
I have two of these 12 watt 12 volt solar charger / maintainers. One I've had for over a year and used for a pontoon boat battery so it only is used during the 5-6 month boating season in Michigan. The second I just bought in July for a PWC battery. I love how well built they are. The status LED can tell you if it's charging, open circuited, incorrect polarity, shorted or fully charged (the LED is on the front of the unit so it's readily readable). It requires minimal exposure to outdoor lighting to operate, even charging a small amount in fully overcast conditions. I've used my volt meter in amp mode to measure current output under various lighting conditions and it works at least as well as advertised, if not better.

The biggest reason I felt compelled to write this review is that about two weeks after receiving my second panel (bought in July 2023), the unit quit working reliably. It would work for awhile then quit (LED went blank even in direct sunlight) then mysteriously it would start working again . I contacted the company and they asked me to send a video showing the LED not working while the panel was in direct sunlight. Once they received and confirmed, they sent a new unit to me directly from Amazon without me having to send the old unit back. In all it took about four days from contacting the company to receiving the new panel. This company deserves our business from both a product quality and company support perspective. The new panel I received is working very well so far and the panel I've owned for a year has worked flawlessly since purchasing in July of 2022.
Pat
5.0 out of 5 stars Works as described
Reviewed in the United States on June 11, 2024
This works great at keeping my two marine batteries charged all year long.
Izuk
4.0 out of 5 stars It does work, but not great
Reviewed in the United States on April 19, 2024
The product does charge a battery, but only to about 80% after several days. I bought three of these for a fuel trailer and dump trailer. The dump trailer hasn't been used in a week and the battery is still not fully charged. It's better than having a dead battery, but it's not going to have a 100% charge.

Also, the suction cups are mediocre. I would prefer to see a magnetic option.
Nick G.
5.0 out of 5 stars Does its job
Reviewed in the United States on June 22, 2024
I have this hooked up to the battery on my camper. So far it is keeping battery well charged. Easy to set up
TF
5.0 out of 5 stars Doesn't Charge, Please Read
Reviewed in the United States on February 23, 2024
Here's my update after the Seller contacted me. They wanted to resolve my issue of the unit not working as described. They sent me a new unit. They also contacted me to ensure the new unit works as described. Bottom line, yes it does. Thank you for the quick response!

Old review - Hooked up as directed to my trailer's battery. Great sunshine angle. Green light continuously flashes. Took a multimeter to the battery and there is no change. Been in the sun for like 6 weeks with no change in voltage on the battery. Waste of money, do not purchase this model!
E C
5.0 out of 5 stars Works great
Reviewed in the United States on April 21, 2024
Easy to use and good value
Amazon Customer
5.0 out of 5 stars Product worked great and as promised, Customer Support was very quick to respond to questions.
Reviewed in the United States on November 7, 2023
I had purchased the BC-12 two years ago to keep my Honda Ridgeline battery charged during the summer months while in outdoor storage at my FL Home. The product worked great the first season left mounted to inside of windshield with provided suction cups. All stayed in place and battery was in great, fully charged condition after sitting 5+ months. This summer I did all the same except also used an interior window shade the BC-12 was again mounted on inside to windshield between the shade and the glass. The heat caused the unit to become disformed though all still worked and battery was fully charged. I reached out to Suner Power Support. Suner Power support responded right away and has sent me a replacement unit at no charge. Thank You for the Great product and Excellent customer service.

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