Samsung 40T 21700 Battery (1PC)
One of the top performing Samsung 21700 size batteries, the Samsung 40T is an amazing battery which performs closely to the Samsung 30T in terms of overall power, while offering a superior 4000mAh of capacity.
SAMSUNG 40T 21700 4000MAH SPECIFICATIONS:
Approximate Diameter: 21.1mm (max)
Approximate Length: 70.4mm (max)
Manufacturer Rated Capacity: 4000mAh
Manufacturer Rated Standard Discharge Capacity: 3900mAh
Manufacturer Rated Max Discharge Current: 30A
Nominal Voltage: 3.6V
Peak Voltage: 4.2V
Style: Flat Top
Color: PurpleDo not overcharge or over-discharge.
To combat this, do not leave your batteries in any charger without supervision. Make sure that you are able to see or check on the charger every 15-30 minutes. This way when the charger indicates that the batteries have been fully charged, you can remove them from the charger. Leaving batteries in a charger all night long or longer can cause them to be overcharged, which can result in battery failure. Charging your battery over 4.25 volts can shorten its life-cycle and going over 4.5 volts can cause it to burst. Cease using your charger if this ever happens.