Samsung INR21700-50E 3.7V 5000mAh Lithium Ion Battery 10A max continuous discharge
Capacity: 4900mAh
Rated Voltage 3.6V - 3.7V
Charging cycle termination voltage 4.20V ± 0.05V
max discharge current: 9.8A
Do not discharge deeper than 2.5V
Plus pool: Flat top
Chemistry: Li-ion