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20W 12V Solar Battery Maintainer & Trickle Charger

Regular price $29.99

Key Features

• 20W Rapid Charging utilizes 30% efficient PERC monocrystalline cells for superior energy replenishment

• Flexible 360° Installation allows for precise angle adjustments to maximize daily solar energy capture

• Extreme Weather Resilience is guaranteed by an IP68-rated design that withstands 2400Pa wind and 5400Pa snow loads

• Rugged Build Quality features 1.6mm tempered glass and a corrosion-resistant anodized aluminum alloy frame

• Universal 12V Battery Support is compatible with LiFePO4, Lithium Ion, AGM, SLA, GEL, FLD, EFB, and MF chemistries

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Delivery time: 3-8 business days.
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20W 12V Solar Battery Maintainer & Trickle Charger

Boost your 12V batteries with Callsun 20W high-efficiency solar charger. Featuring A+ monocrystalline cells, IP68 all-weather durability, smart 3-stage charging, and wide battery compatibility, it keeps your cars, RVs, boats, and motorcycles powered and ready, anytime, anywhere.

Why Choose Callsun Solar Panel

Feature Callsun Solar Panel Other Solar Panels
Efficiency 30% 20%
Installation 360° Flexible Installation 180° Flexible Installation
Waterproof IP68 IP65
Frame Anodized Aluminum Alloy General Aluminum Alloy
Glass 1.6mm Tempered Glass 0.6mm Tempered Glass

Specifications

Key Specs at a Glance 20W output · 30% efficiency · Adjustable Angle(360°) · IP68

Mechanical Characteristics(STC)

Maximum Power (Pmax) 20W
Maximum Power Voltage (Vmp) 20.23V
Maximum Power Current (Imp) 0.99A
Open-circuit Voltage (Voc) 24.37V
Short-circuit Current (Isc) 1.04A
Cell Type Monocrystalline Silicon

*STC(Standard Test Condition): Irradiance 1000W/m², Cell Temperature 25°C, Air Mass 1.5.

Specifications

Dimension 303 × 408 × 20 ± 5 mm (11.9×16.01×0.8 ± 0.2 in)
Weight 1.95kg(2.3lb)
Compatible with 12V LiFePO4, Lithium Ion, AGM, SLA, GEL, FLD, EFB, MF batteries
Glass 1.6mm Tempered Glass
Frame Anodized Aluminium Alloy
IP Rating IP68
Max. Wind Load/Snow Load 2400Pa/3600Pa

Includes

Callsun 20W 12V solar battery maintainer kit with rigid panel, smart controller, alligator clips, and O-ring cables for car RV.

Downloads & View

User Manual

FAQ

1. What types of batteries are compatible with this 12V solar charger?

This smart 12V solar charger works with LiFePO4, Li-ion, AGM, SLA, GEL, FLD, EFB, and MF batteries. It's suitable for cars, RVs, boats, motorcycles, campers, lawn mowers, trailers, water pumps, and electric fences.

2. What is the purpose of the corner guards on this solar panel?

The integrated corner guards provide dedicated drop protection, shielding the tempered glass and aluminum frame from impact damage during transport, setup, or accidental drops in harsh outdoor environments.

3. What happens if I accidentally reverse the polarity or cause a short circuit?

The built-in controller features a 6-in-1 protection system. If you reverse the alligator clips or cross the wires, the safety circuit automatically cuts off power to prevent any damage to your battery or the charger.

4. How does the included 360° adjustable mount help with installation?

The 360° swivel mount allows you to adjust the angle of the solar panel flexibly. To maximize charging efficiency, use the included hardware kit to mount it in a location where it can face direct sunlight without shade.