20W 12V Solar Battery Trickle Charger & Battery Maintainer
20W 12V Solar Battery Trickle Charger & Battery Maintainer High-efficiency monocrystalline cells, built-in MPPT controller, LED charging indicator, for cars, RVs, boats and trailers
- Battery Trickle Charging & Maintenance: The 20-Watt solar battery charger converts available sunlight into power for maintenance charging of 12-Volt batteries, helping reduce battery drain during long-term parking, seasonal storage, and periods of infrequent use
- High-Efficiency Monocrystalline Solar Panel: Built with high-quality monocrystalline solar cells for efficient energy conversion, improving charging efficiency by approximately 20%–30% compared with conventional charging methods
- Built-In MPPT Charge Controller: Regulates voltage and current for stable battery charging, helps prevent overcharging, and blocks reverse current from the battery to the solar charger at night
- Plug-and-Play Setup & Wide Compatibility: Features a quick-connect SAE interface; includes alligator clips, a cigarette lighter plug, an OBD-II connector, and #8/M4 ring terminals for easy installation. Suitable for cars, boats, RVs, trailers, motorcycles, tractors, and other vehicles and equipment. Compatible with 12 V flooded, GEL, AGM, SLA, and maintenance-free lead-acid batteries
- LED Status Indicators: With a battery connected, blue means sunlight, red means charging and green means fully charged. Without a battery, blue and red together indicate weak sunlight. Brief illumination of all LEDs upon initial exposure to sunlight is normal
- Outdoor Protection: Built with high-transparency tempered glass and a corrosion-resistant ABS frame for enhanced durability and impact resistance; The IP65 dust- and water-resistant design helps protect the solar charger in a variety of harsh weather conditions for reliable outdoor use
From the brand
Let sun always work for you
TOPRAY Solar has been working in the solar for more than twenty years, dedicated to making more convenient for customers to use solar.
About TOPRAY Solar
TOPRAY Solar has been working in the solar industry for more than twenty years.
Our mission is to provide portable, clean, and reliable power for everyone and every community. We reject complicated marketing and hidden fees, insisting on transparent fees, simple operation, and reliable quality, providing an easy way for everyone to adopt solar energy.
Easy to connect
The product comes with various cables, suitable for multiple interfaces, and can be used directly by connecting them.
High efficiency and durability
High conversion efficiency, with a waterproof and sturdy structure, suitable for harsh outdoor conditions.
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Solar Power
| SKU: | B0H6BCPMHJ |
| Brand: | TOPRAY Solar |
| Model: | TP20W12V |
| Material: | Monocrystalline Silicon, Tempered Glass, ABS |
| Manufacture: | TOPRAY Solar |
| Material: | Monocrystalline Silicon, Tempered Glass, ABS |
From the brand
20 Watt 12 Volt Solar Battery Maintainer & Trickle Charger - Quality - Waterproof
I have several of these and this particular one is heavier and more solid.
Great way to maintain seldom used batteries/equipment.
HINT: Think outside of the box for other applications.
Fairly high voltage and current capacity.
I agree in principle with the sellers ad copy, reposted below for your reference:
Solar Battery Trickle Charger & Battery Maintainer: This 20 Watt solar battery charger converts sunlight into stable power, delivering continuous trickle charging and maintenance for 12 Volt batteries. Designed for vehicles and equipment in long-term storage, it helps prevent battery drain and keeps your battery ready to start whenever needed
High-Efficiency Monocrystalline Solar Panel with MPPT Controller: Made with high-quality monocrystalline solar cells to support higher energy conversion efficiency. The integrated MPPT charge controller improves charging efficiency by 20%–30%, helping maintain stable output even under varying sunlight conditions
Advanced Protection & IP65 Waterproof : Built with high-transparency tempered glass and a corrosion-resistant ABS frame for enhanced durability and impact resistance. Features built-in protection against overcharge, over-discharge, overvoltage, overcurrent, overload, short circuit, reverse polarity, and overheating—providing all-around battery protection. The IP65 waterproof design ensures reliable performance in various harsh weather conditions
Wide Compatibility & Plug-and-Play Setup : The solar battery charging kit includes alligator clips, a cigarette lighter plug, an OBD2 connector, and a tinned copper cable for easy installation with no complicated setup required. Suitable for cars, boats, RVs, trailers, motorcycles, tractors, and more. Compatible with 12-volt Flooded, GEL, AGM, SLA, maintenance free lead-acid batteries
Low Maintenance Solar Battery Maintainer for Outdoor Use : Simply keep the solar panel surface clean to maintain optimal performance. The durable sealed design minimizes maintenance needs, making it ideal for long-term outdoor use while extending battery life
MPPT controller is almost a thing of magic.
HINT: May under some conditions be wired together.
Online photos are NOT actual size.
Received unit looks better in hand.
Think of it as an insurance program for starting vehicles in cold weather.
Seller offers other sizes and versions to meet almost any need.
FIVE STARS
Good for Art Illuminatio
I’m using this to charge up the battery for a lit art project at Burning Man that is located a long way from any plug-in source of power. I’ve tested it for my modest lighting needs, and it runs all night. I like the flexibility this provides for other emergency situations.