** Recommended current (A) for occasional fast recharge
*** Maximum allowed current (A)
Currents higher than maximum allowed MUST BE AVOIDED. since it may shorten battery life or lead to premature
failure, and may damage the connected equipment if BMS protection is triggered.
3 BMS – Battery Management System
The battery is equipped with an advanced integrated electronic Battery Management System, BMS. The BMS
monitors the state of the battery by measuring cell voltages, temperatures and the electrical current in and out of
the battery. The BMS performs balancing of the battery cells inside the battery.
BMS has a self-discharge learning and SOC calibration function. Calibration needs to charge the battery to
100%SOC
3.1 BMS integrated protection
To protect or minimize damage to the battery from abuse situations there are built-in protection limits for voltage,
temperature and current. Systematic or intentional triggering of the BMS protection must be avoided and may
cause permanent damage to the battery.
When BMS low voltage protection is triggered, battery must be “waken up” by the use of a proper charger (w/o
voltage sensing) and charge to 100% to calibrate BMS and get accurate SOC calculation.
WARNING! If the battery is used outside the permitted ranges the BMS will enter protection mode and trigger an
electronic disconnect of the battery. Disconnection by the BMS results in sudden loss of battery power and may
lead to total loss of function for connected equipment.
3.1.1 BMS protection levels
For correct operation refer to recommendations and ranges (voltage, current and temperature) for charge and
discharge in section 2.
3.1.2 BMS protection modes
BMS protection modes are listed below including trigger, release and possible or required action to restore battery
to normal state.
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