ASIN B07Y5TKMZ4Image via Amazon
SUNER POWER 20W 12V Solar Panel Battery Trickle Charger Maintainer Pro | Smart MPPT Charge Controller, IP65 Waterproof, 8-Safety Protections, Auto Charging & Cut Off, for Car Boat RV Trailer Marine
- UltraSmart MPPT Technology
- Improved 3-stages Charging
- Free Maintenance
- 8-Safety Protections
$77.36
Price as of Oct 16, 2026, 7:47 AM UTC. Prices and availability are subject to change. The price shown on Amazon at the time of purchase applies.
- Checkout happens securely on Amazon
- Read verified customer reviews first
- Shortlisted by Everstead Finds
Disclosure: this page contains affiliate links. As an Amazon Associate, I earn from qualifying purchases, at no extra cost to you.
Key features
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.
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.
8-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 mounting screws, and all cables are plug and play, offering easy and quick using experience.
SUNER POWER 20W 12V Solar Panel Battery Trickle Charger Maintainer Pro | Smart MPPT Charge Controller, IP65 Waterproof, 8-Safety Protections, Auto Charging & Cut Off, for Car Boat RV Trailer Marine
See the latest price, customer reviews and delivery options on Amazon.
