Battle Born User Manual

Parallel
Multiple BB10012 may be mounted in parallel to increase the current capacity of the system. When
batteries are mounted in parallel, the voltage of the system does not change, but the current limits are
additive. For example, two BB10012 batteries mounted in parallel can deliver 200A continuously and
400A for 30 seconds. Three BB10012 batteries mounted in parallel can deliver 300A continuously and
600A for 30 seconds. Therefore, all cables and connections MUST be able to accommodate the high
currents that can be delivered by the battery. Appropriate fuses and circuit breakers are also highly
recommended to protect downstream components from current spikes and short circuits.
Series
Up to four BB10012 batteries may be connected in series to increase the voltage of the system up to a
48V system. When batteries are mounted in series, current capacities remain the same, but the system
voltage is additive. Two BB10012 batteries mounted in series to form a nominally 24V system should be
charged using a bulk and absorption voltage of 28.8V, and a float voltage of 27.2V. Four BB10012
batteries mounted in series to form a nominally 48V system should be charged using a bulk and
absorption voltage of 57.6V, and a float voltage below 54.4V.
Batteries to be connected in series should be at the same state-of-charge before they are connected.
For best results, fully charge each BB10012 battery using a 12V charger prior to connecting them in
series, in order to ensure that they are at the same state-of-charge.
Inverter/Chargers (and other devices having large input capacitance < 10 microF)
Special consideration must be made for connection to devices that have a large input capacitance,
because of the tendency of these devices to draw large current spikes upon initial connection to the
batteries. This includes inverter/chargers that are greater than 4000 Watts in size. This applies to 12V,
24V, and 48V inverter chargers. Battle Born Batteries requires a current surge limiter (CSL500) that is for
sale at Battle Born Batteries to be installed with each inverter/charger greater than 4000 Watts.
DO NOT CONNECT BATTERIES TO AN INVERTER/CHARGER THAT IS GREATER THAN 4000 WATTS IN
SIZE WITHOUT A CSL500 CURRENT SURGE LIMITER. FAILURE TO INCLUDE A CSL500 WILL DAMAGE THE
BMS AND PRESENT A POTENTIAL FIRE HAZARD.
DO NOT SUBMERGE THE BATTERIES
DO NOT SHORT CIRCUIT THE BATTERIES
DO NOT REVERSE POLARITY
DO NOT EXPOSE THE BATTERIES TO EXCESSIVE HEAT
DO NOT MISHANDLE, DROP, THROW, OR APPLY EXCESSIVE FORCE TO THE BATTERIES
DO NOT OPERATE WITH LOOSE TERMINAL CONNECTIONS