SAMSUNG INR21700-40T 4000mAh 3.7V Lithium-ion Rechargeable Cell(2pcs/pack)
Specifications:
Rated discharge capacity: 3900mAh
Standard discharge capacity: 4000mAh
Nominal voltage: 3.6V
Standard charge: CCCV, 2A, 4.20V, 200mA cut-off
Rated charge: CCCV, 6A, 4.20V, 100mA cut-off
Max. continuous discharge: 35A with temperature cut.
Max. continuous discharge: 45A with 80C temperature cut.
Discharge cut-off voltage: 2.5V
Cycle life: 250 cycles to 60% at 6A charge and 35A discharge.
Test/review of Samsung INR21700-40T 4000mAh (Cyan),You can click here to review:
Warning:

DO NOT throw into fire or incinerate.
DO NOT puncture damage. disassemble it
DO NOT knock the battery

Specifications:

Brand: SAMSUNG
Unit: 1pc/pack
Model: INR21700-40T
Size: 21700
Style: Flat Top
Continuous Discharge Rating: 35A w/o temperature cut / 45A with 80C temperature cut
Nominal Voltage: 3.6v
Protected: No
Rechargeable: Yes
Approximate Dimensions: 21.1mm x 70.4mm
Capacity: 4000mAh
Package: Simple Packing