Shopping Cart

Your cart is empty.

Your cart is empty.

SUNER POWER 12V 50W Solar Battery Charger Maintainer PRO, Built-in UltraSmart MPPT Charge Controller, Waterproof 50 Watt Solar Panel Charging Kit for 12Volt AGM, Deep Cycle, Lead-Acid, Lifepo4 Battery

4.5 (8) Write Review
Free shipping on orders over $29.99

$89.95

$ 35 .99 $35.99

In Stock

About this item

  • 【Ultra-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 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. The solar trickle charger stops charging when battery has full charge, and automatically resumes when battery has discharge, totally free maintenance.
  • 【 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.
  • 【 Three Battery Charging Modes 】Independently charge and control each 12 volt battery with selectable charging modes - including 12V, 12V AGM and 12V Lithium - for all types of lead-acid boat, car, dump trailer, automotive, marine, RV, powersport, camper and deep cycle batteries, including flooded, gel, AGM, SLA, VRLA and maintenance-free, plus lifepo4 lithium batteries.
  • 【 Visual Charging Level】The charge level indicators allow to visually monitor the stage of charge among 25%-50%-75%-100%. 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 with zero overcharge.
  • 【 Superior Quality and Material】Made of premium Grade A+ solar cells with efficiency up to 21%-30%, tempered solar glass and durable corrosion-resistant aluminum 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-dilled holes on frame allow for quick mounting, and all cables are plug and play, offering you easy and quick using experience.


Product Description

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

hero-video

Merchant Video
20W 30w 50w solar panel battery charger maintainer charging for 12volt boat marine car rv
20w solar panel 12v
20w 30w 50w solar panel battery maintainer trickle charger charging kit 12v car boat marine trailer
20w 30w 50w solar panel battery maintainer trickle charger charging kit 12v car boat marine trailer

Thomas Innis
Reviewed in the United States on March 20, 2025
Cannot mount to flat surface as-is. Control module protrudes beyond frame so you have to build or buy additional brackets to be able to mount this.
Ralph Mason Clark
Reviewed in the United States on March 19, 2025
Works well charging a 12 volt battery. No issues and since October the 12V battery has always worked when needed.
Dale P.
Reviewed in the United States on August 3, 2024
The media could not be loaded.
Placeholder
Reviewed in the United States on August 26, 2024
Would recommend it
Timothy
Reviewed in the United States on July 8, 2024
The media could not be loaded.
Wopsy
Reviewed in the United States on July 19, 2024
I have not plugged in my electric charger since I installed this solar charger on my golf cart. This unit has no trouble keeping up.
Grammy and Wayne
Reviewed in the United States on May 8, 2022
Easy to install easy to use
Mike Jensen
Reviewed in the United States on April 21, 2022
put on my cargo trailer conversion. never need to charge battery or use generator!
Recommended Products
Solar Fan,25W Solar Panel+8' High Speed Solar Powered Fan with Bracket,Solar Fan for Chicken Coop with Power Adapter,Waterproof Solar Exhaust Fan,Solar Power Fan for Greenhouse,Shed(Grey)

$58.99

$ 31 .99 $31.99

4.6
Select Option
100W Portable Solar Panel,20V Foldable Solar Charger for Power Station Generator,USB-A &Type-C Output, MC4 Connectors and 6in1 Solar Cable,23.5% High Efficiency IP65 Waterproof for RV, Camping

$76.99

$ 35 .99 $35.99

4.5
Select Option
5W Solar Panel for Google Nest Doorbell (Battery), Nest Doorbell Solar Panel with U Shape Port, 9.8ft Charging Cable, Adjustable Mount

$15.99

$ 7 .99 $7.99

5.0
Select Option
12 Pack Solar Panel Mid Clamps 1.06 Inch Solar Panel Bracket Aluminium Mounting Accessories Aluminum Solar Mid Clamp for Solar Panel Mounting Solar Panel Mid Clamp

$9.99

$ 4 .99 $4.99

4.4
Select Option
14430 Battery, 14430 3.2V 450mAh LiFePo4 Rechargeable Solar Batteries 4 Pack for for Solar Panel Outdoor Garden Lights, Solar Panel Light, Tooth Brush, Shaver, Flashlight (NOT AA Battery)

$9.99

$ 4 .99 $4.99

5.0
Select Option
Renogy 400 Watt 12 Volt Premium 4 Pcs 100W Panel+40A MPPT Charge Controller+ Bluetooth Module Fuse+ Mounting Z Brackets+Adaptor Kit +Tray Cables Set, 400W, Grid 12V Solar Power System

$434.88

$ 99 .00 $99.00

4.7
Select Option
6W Solar Panel Charger for Outdoor Security Cameras,DC 5V, IP65 Waterproof. Micro USB/USB-C/DC (35*135) Fits eufy/wyze/ring camera,9.8ft Cable,Stabilization System for Battery Protection fast charging

$14.05

$ 6 .99 $6.99

4.7
Select Option
Renogy 16BB N-Type 200 Watt 24V Solar Panel, 24 Volt 200W Solar Panel 25% High-Efficiency, PV Module Power Charger for RV Marine Cabin Roof Home Farm Battery and Other Off-Grid Applications

$159.67

$ 67 .99 $67.99

4.7
Select Option