Specs- BL4040

Product Length  13.3CM   
Product Height   7.1CM 
Product Width   8.2CM
Battery Capacity     4200 mAh
Voltage  40V MAX* V
Average Charge Time 45min
Fuel Gauge   YES
Battery certification CE FCC ROHS UL UN38.3
Battery Type   MOLICELL INR-21700-P42A
Number of Pieces    1
Product Weight   1.86lbs
Warranty Period 3 Year
Overcharge Protection ✓
Overvoltage Protection ✓
Overheat Protection ✓
Overdischarge Protection ✓