Redarc DC to DC Battery Charger – 12V 25A Dual Input with Solar

The Redarc BCDC1225D is a rugged, high-performance DC to DC battery charger that delivers a continuous 25 A output to charge your auxiliary battery while you drive or via solar input. Built for Australia’s demanding off-road, caravan, and touring environments, this unit supports simultaneous charging from vehicle alternators and solar panels - with priority given to solar for efficient energy use.

This multi-stage charger is compatible with AGM, GEL, standard lead-acid, calcium, and Lithium (LiFePO4) batteries. Its fully sealed construction means no fans or moving parts - making it ultra-reliable, quiet, and protected against dust, water, and vibration.

Whether your vehicle uses a conventional or smart alternator (including variable voltage), the BCDC1225D is engineered to deliver safe, efficient charging every time. With Redarc's Green Power Priority, the charger automatically selects solar power first, helping to extend alternator life and reduce fuel use.

Key Features

• 25A output for fast, efficient charging of auxiliary batteries
• Dual input: accepts power from alternator and solar panels
• Green Power Priority - prioritises solar over vehicle power
• Supports smart alternators (standard, variable voltage, 12V/24V systems)
• Multi-chemistry compatible - AGM, GEL, lead acid, calcium, Lithium (LiFePO4)
• Fully sealed design – fan-free, silent, dustproof and splash resistant
• Made in Australia - built for extreme heat, dust, and vibration
• Compact and lightweight - just 0.7 kg
• Backed by a 2-year warranty

Specifications