23 Jul 2Pack Enhanced 4S 40A 16.8V Li-ion Lithium Battery Protection Board PCB BMS C…
Besides, it can use for electric drill with starting current below 80A and power below 135W. If you want to start the drill successfully, it requires 3pcs15C-20C power batteries, or 6pcs10C-15C power batteries (Note: ordinary 18650 battery can not start the drill! )....