12V 25W Solar Battery Trickle Charger, MPPT, IP67

12V solar battery trickle charger keeps your vehicle battery topped up with reliable 25W charging for storage, seasonal use, and backup power needs. Monocrystalline cells under high-transparency tempered glass help capture more sunlight, while the external MPPT controller manages charging to reduce overcharge and deep discharge. Built for outdoor mounting with an adjustable bracket and IP67 sealing, it’s a practical solar battery maintainer for cars, boats, RVs, motorcycles, and trailers.

• Delivers 25W solar charging to maintain 12V batteries during storage and low-use periods


• Protects with external MPPT controller and multi-stage safety features for stable charging


• Fits outdoor installs with IP67 waterproof build and 0°–60° adjustable mount bracket


• Includes 122" extension cord plus alligator clips and O-ring terminals for quick hookup


• Supports common 12V battery types including LiFePO4, Li-ion, AGM, Gel, SLA, and EFB

Use this solar panel battery charger kit to keep starting batteries ready when shore power isn’t available—ideal for parked cars, stored motorcycles, boats at the dock, RVs between trips, and utility trailers. The tempered-glass surface and monocrystalline silicon cells are designed for consistent outdoor exposure, and the adjustable bracket helps aim for better sun capture. Choose the included clamp or ring-terminal connections to match your setup and get a clean, dependable install. Grab yours today and keep your 12V battery maintained with sunlight.

• Battery voltage compatibility: 12V


• Maximum power: 25W


• Max power voltage: 20V


• Solar cell: Monocrystalline silicon


• Controller type: External MPPT controller


• Waterproof rating: IP67


• Surface material: High-transparency tempered glass


• Solar panel size: 17 x 14.37 x 0.79 in (432 x 365 x 20 mm)


• Net weight: 3.90 lb (1.77 kg)


• Cable lengths: 122" extension; 43.3" alligator clips; 43.3" O-ring terminals