Sun Energise 25W 12V Solar Charger & Maintainer with MPPT – Waterproof Kit

Sun Energise 25W 12V Solar Charger & Maintainer

Meet Sun Energise's compact solar kit designed to keep 12V batteries topped up for cars, boats, RVs, trailers, and more. Its rugged panel combines with a built-in smart MPPT to harvest more power from sunlight, even as clouds drift by. This is a practical, weather-ready solution built for everyday use in outdoor settings.

Smart MPPT technology

The integrated MPPT system tracks and converts solar energy efficiently, with tracking efficiency approaching 99% in favorable light and peak conversion up to 98%. Expect up to 20–30% better utilization of harvested energy compared with simpler charging methods, depending on sun exposure and battery state.

• Real-time sun tracking adapts to changing light for steadier charging
• High conversion efficiency reduces energy waste
• Energy is available when you need it for 12V systems

Upgrade 3-stage charging

The smart algorithm moves through Bulk, Absorption, and Float stages to charge safely, hold a stable 12V level, and help extend battery life with minimal maintenance.

• Bulk for quick capacity buildup
• Absorption to top off safely
• Float to keep the battery ready during standby

Easy to monitor

LED indicators let you quickly assess status. The charger cuts off when the battery is full and resumes charging automatically when needed, making it simple to check at a glance.

Full charging protection

Comprehensive safeguards include over-charge/discharge, over-voltage, over-current, short circuit, reverse polarity, and over-temperature protection. An IP65 waterproof rating adds dust and water resistance for outdoor use.

Battery compatibility

Designed to work with a range of 12V batteries, including gel, Deep Cycle, SLA, Flooded, AGM, and LiFePO4 lithium chemistries, giving you flexible options for different projects.

Durable and weather-ready

Built with A+ mono solar cells (21–30% efficiency), a strong tempered glass cover, and a corrosion-resistant ABS frame. The assembly withstands UV exposure, hail, sandstorms, and wind or snow loads up to 2400 Pa and 5400 Pa respectively.

Easy installation and use

Pre-drilled holes on the frame and plug-and-play cables make outdoor mounting straightforward, so you can set up the system with minimal effort.

Wide range of applications

Anyone seeking a smart solar tender will find this kit suitable for cars, boats, RVs, dump trailers, marine crafts, campers, lawnmowers, motorcycles, jet skis, tractors, trucks, ATVs, trolling motors, and more.