Mooch confirms this Molicel P42A 21700 in his testing is safe to say this is the best of all 21700 for regulated mods running between 40-90W.

Sold individually.

Specs

• Size: 21700
• Nominal Capacity: 4200mAh
• Nominal Voltage: 3.6V
• Maximum Voltage: 4.2V
• Discharge Current: 35A
• Maximum Continuous Style: Flat Top
• Approximate Dimensions: 21.7mm x 70.2mm
• Approximate Weight: 70g