PCM (Protection Circuit Module) functions as the safety devices during charging and discharging.
Kokam SLPB, as like the other Li-ion battery, must be used within the ranges of 2.7V min. to 4.5V max.
SLPB should be damaged permanently and can’t be used again if it used out of the range above.
PCM would be act as protect device and it keeps the battery in the range above during charging/discharging.
PCM has the 3 primary functions that Kokam prepared for the customer’s demands and requirements.

• Cutoff at upper limit of voltage during charging
• Cutoff at lower limit of voltage during discharging
  ->It can be modified to signal only to the controller of application.
     (simplification & cost-effectiveness)
• Cutoff at over-current (short circuit etc.)
  ->It can be considered for using Fuse instead of FET due to heat problem at much
     higher current.

BMS (Battery Management System) has the primary function as bellows;

• Voltage, Current Measurement
• Temperature Measurement
• Upper and lower voltage cut-off
• Emergency shut-off
• Monitoring of each cells
• Calculation of SOC (State Of Charge)
• Communication interface via CAN-bus or RS232