UNI-FIT Spare Battery Fits Makita & 102751 4.0Ah 18V

Battery for 102751
Voltage: 18V
Current: 4000mAh
Type: ICR18650 3.6V 72W Li-ion battery
Each battery pack contains 10 lithium batteries
Each lithium-ion battery contains 3 cells.

After full charge, battery can be used for 20-30 minutes without load and 10-20 minutes with normal load.