Samsung 30T (INR21700-30T) , widely used in high drain devices, has a 3,000mAh capacity and 35A maximum continuous discharge.

Samsung INR 21700 40T battery 4000mAh 30A , is a 21700 battery with high capacity 4000Ah at 3.6V. Special design with multi–protection for battery cell can make sure your safety, This battery is ideal for use with personal vaporizers, e-cigarettes or any other 21700 li-ion battery operated device.