A secondary battery on board requires a dedicated charging solution. The Mastervolt Charge Mate Pro Charging Lithium Relay makes it possible to distribute the charger or alternator current effectively between two battery banks such as a starter and a service battery. The Charge Mate Pro connects both batteries during charging and keeps them isolated when discharging. This significantly reduces the risk of a flat starter battery for example. The Charge Mate Pro offers an additional advantage over mechanical charge relays, by limiting the charge current to the second battery. The primary battery, like a starter battery, is therefore charged with priority. The return current is automatically blocked even when the secondary battery has a higher voltage. An emergency start function is possible by connecting an optional bypass switch to the Charge Master Pro. The Charge Mate Pro series consist of a 40 Amp and a 90 Amp version, both suitable for charger or alternator applications. The Charge Mate Pro 90 ensures a higher charge current for example when charging Lithium-Ion batteries. It is also perfectly suitable for large automotive alternators up to 180 A and can be used in parallel operation with a 225 Amp alternator to fulfil even higher continuous power demands of your equipment on board.

• Current limited electronic charge relay with high efficiency and reverse current protection. Compatible with LiFEPO4 Batteries
• Used for leisure and professional marine and mobile applications and suitable for charging Lithium-ion Starter Batteries to AGM/GEL/Lithium Service Batteries
• Input Voltage Range: 9-32V
• Number of Battery Outlets: 2
• Electronic charge coupling with very low voltage drop
• High system reliability by prioritized charging of the main battery
• Prevents power dips of the onboard electrical network
• IP65 electronics in a corrosion resistant casing with aluminum heat sinks. Rated for CE
• Dimensions: 6.2 x 5.5 x 3.1 inch
• Download Installation Manual here.