TJM’s battery management systems are the toughest most advanced dual battery management systems available today. TJM’s DC25A allows you to charge your 12V second or auxiliary deep-cycle battery on the go. It is shock, vibration and dust proof, plus water resistant which makes it suitable for both in-vehicle and under-bonnet installation. Offering a host of features, the DC25A can charge simultaneously from both solar and alternator (9-32v) inputs, and function as an MPPT solar controller with dual charging modes for compatibility with both smart and conventional alternators. It comes loaded with a host of safeguard features including over/under voltage, anti-sparking, reverse connection and over-temperature protection systems for peace of mind. TJM’s DC25A is the easy to install and sets a new benchmark for DC-DC battery management.