Sun Energise 25W 12V Solar Charger & Maintainer with MPPT | Waterproof Battery Trickle Charger

Powerful solar charging in a compact, weather-ready package

Sun Energise 25W 12V Solar Charger & Maintainer is designed for everyday reliability. Its slim panel, sturdy frame, and weather-ready build let you charge and maintain 12V batteries during road trips, on the water, or at a campsite. The built-in MPPT controller helps you capture more sunlight, turning daylight into usable power for your devices and batteries.

With MPPT technology delivering up to 99% tracking efficiency and up to 98% peak conversion, you can expect enhanced energy utilization, even when daylight is less than ideal. In typical conditions, utilization can rise by 20–30% compared with non-MPPT chargers, giving you more charging headroom in variable light.

Three-stage charging for battery health

The smart charging sequence—Bulk, Absorption, and Float—gently brings batteries to a safe level and then maintains them. This approach helps keep voltages stable and reduces the risk of overcharge, supporting battery longevity across common 12V chemistries.

• Bulk: fast charging while sun is strong
• Absorption: controlled current to reach full voltage
• Float: low, steady current for sustained maintenance

Simple status monitoring and automatic protection

A clear LED indicator lets you check charging status at a glance. When the battery is full, charging pauses automatically and resumes if the battery drops. Built-in protections guard against over-charge, over-discharge, over-voltage, over-current, short circuits, reverse polarity, and overheating, plus IP65 waterproofing for outdoor use.

• LED indicators for quick status checks
• Auto-resume when needed without supervision
• Comprehensive protection for varied environments

Designed for diverse batteries and tough environments

Widely compatible with 12V batteries including gel, deep cycle, SLA, flooded, AGM, sealed lead acid, and LiFePO4. The panel uses high-efficiency mono solar cells (21–30%), protected by tempered glass and a corrosion-resistant ABS frame to withstand sun, wind, hail, and snow (up to 2400 Pa wind, 5400 Pa snow).

The kit is straightforward to install with pre-drilled mounting holes and plug-and-play cables, letting you go from box to charging quickly. It’s ideal for cars, boats, RVs, campers, lawnmowers, motorcycles, jet skis, tractors, trucks, ATVs, trolling motors, and more 12V systems.

Real-world benefits in daily life

Picture a boat battery staying ready after a weekend on the water, a parked car battery kept healthy during long trips, or a trailer battery remaining usable for spontaneous exploration. The Sun Energise charger provides a steady trickle-charge from the sun, offering dependable power when you need it most.