Victron - Phoenix Inverter 48/500 120V VE.Direct NEMA 5-15R [PIN485010500] Blue Smart Chargers IP65 with DC connector - AU/NZ Plug This Battery Combiner Kit is

This Battery Combiner Kit is for adding a 2nd or 3rd battery system in your car

A toroidal transformer provides a high peak power surge capacity

Pre-alarm signal: provide a warning before the system shuts down due to -for example- a low cell

The solar charger ensures that the batteries are being charged by energy harvested from your solar panels

firmware updates

Victron - Phoenix Inverter 48/500 120V VE.Direct NEMA 5-15R [PIN485010500] Blue Smart Chargers IP65 with DC connector - AU/NZ Plug This Battery Combiner Kit isInverters allow you to power domestic equipment requiring 230V 120V AC using 'leisure' or 'automotive' batteries rated at 12V, 24V or 48V DC. Product Documentation