The Victron Battery Balancer equalizes the state of charge of two series-connected 12V batteries (a 24V bank), or several parallel strings of series batteries. Mismatched cells in a series string charge and age unevenly; left unchecked, one battery is chronically overcharged while another never fills — shortening the life of the whole bank. The Balancer corrects this automatically. When the charge voltage of a 24V bank rises above 27V, the Balancer switches on and compares the two series batteries. It draws up to 1A from the battery with the higher voltage, creating a charge-current differential that pulls both toward the same state of charge. Equalizes series-connected 12V lead-acid batteries Activates above 27V on a 24V system; draws up to 1A from the higher battery Parallel multiple units for larger banks — a 48V bank uses three Balancers Alarm LED and relay output for over-voltage warning Pair with a BMV monitor's midpoint-voltage alarm to catch a failing cell early. Blue Marine is an authorized Victron Energy dealer — ships brand-new with the full 5-year Victron warranty, free shipping, and local pickup available.
