Capacity: 4000mAh
Nominal Voltage 3.6V - 3.7V
Charge cycle termination voltage 4.20V ± 0.05V
max. discharge current: 35A
Do not discharge deeper than 2.5V
Plus pole: Flat top
Chemistry: Li-ion
Protection circuit: Without
Diameter: 21mm
Height: 70.1mm
Weight: 67g

The 40T5 has a thinner and stronger casing compared to the 40T3.