The protection board prevents batteries from overcharging, overdischarging and short circuits.

Added: 2026-05-25

[00:00:00]Do you know why lithium batteries need a protection board? It prevents [music] the battery from overcharging, over-discharging, and short circuits, avoiding potential safety hazards.

[00:00:08][music] Some protection boards come with a balancing function, but their accuracy and balancing [music] currents are relatively poor. Do not rely too much on this function in actual use.