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PCM or PCB ( protection circuit module or board ) is "heart" of Li-Ion battery pack. It will protect Li-Ion battery pack from overcharging, over-discharging and over-drain, therefore it is must have to avoid Li-Ion battery pack from exploding, firing and damage. For > 5 cells or 18.5V Li-Ion pack, you shall choose PCM with equilibrium function to keep each cell in better balance and good service life. For high voltage Li-Ion pack ( > 20 cell), you shall consider advanced BMS ( battery manage system) to monitor each cell's performance to ensure battery safer operation.
Batteryspace , e.g AA Portable power corp. has own factory to design and manufacture high quality PCM and BMS for all types Li-Ion battery packs. We test each PCM before shipping and promise PCM is functional and safe. If you have any question in using PCM, please feel free to contact us at tech@batteryspace.com
