All Li-Ion Battery packs must connect to a protection circuit module to protect Li-Ion Battery from overcharge, over discharge and to prevent accidental battery explosion due to its extra high energy density. The protection circuit is specially designed for 3.7V Li-Ion Battery. Please refer to the specification on how to wire the pcb to battery.
Please be advised that this circuit will provide the following protections:
Prevents 3.7V Li-Ion Battery pack from overcharging 4.25 +/- 0.05V
Prevents 3.7V Li-Ion Battery pack from over discharging 2.30 +/- 0.1 V
Maintains 3.7V Li-Ion Battery pack's discharge current lower than 1.0A.
Protect battery from short circuit and wrong polarity
Dimension:9.15mm(0.4") x 5.15mm(0.2") x 3.5mm(0.13")
Max Weight: 0.1 Oz (2.8 grams)