INR21700-40P 4000mAh 5~8C High C-rate

Joinsun INR21700-40P 4000mAh High C-rate Type 21700 Battery Lithium-ion Cells are UL, CE, CCC, and CB certified, support continuous discharge at 5C and pulse discharge at 8C, suitable for electric garden and power tools, including electric drills, impact drills, electric screwdrivers, angle grinders, cutting machines, jigsaws, circular saws, rivet gun, electric sanders, rotary hammers, demolition hammers, heat guns, glue guns, portable air compressors, electric mixers, cordless power cleaners, cordless pressure washers, electric trimmers, cordless wrenches, lawn mowers, robot lawn mowers, hedge trimmers, grass trimmers, leaf blowers, chain saws, pole saws, brush cutters, garden pruners, electric sprayers, tillers, edgers, tree trimmers, weed eaters, mulchers, power shovels, cordless shears, electric cultivators, garden vacuums, power hoes, electric watering devices, and more.

SPECS
Model	INR21700-40P
Cathode Material	NCM (NMC)
Nominal Capacity	4Ah (4000mAh)
Nominal Voltage	3.6V
Max Charge Voltage	4.2V
Discharge Cut-off Voltage	2.75V
Charge Current	2A (0.5C)
Discharge Current	20A (5C) 32A (8C Pulse)
Nominal Energy	14.4Wh
Energy Density	595Wh/L 206Wh/kg
Internal Resistance (IR)	22mΩ ±3
Cycle Life	80% DoD (25°C): • ≥500 Cycles (Discharge: 20A / 5C) • ≥1500 Cycles (Discharge: 12A / 3C)
Diameter	21.7±0.15 mm
Height	70.8±0.2 mm
Weight	70±1g
Max Series & Parallel	20 Series (72V) Parallel: Per Need
Operating Temperature	Ambient: Charge: 0~45°C Discharge: -20~60°C Cell Surface: Charge: 0~50°C Discharge: -20~80°C
Charge Temperature & Actual Charge Capacity (Relative to Nominal Capacity)	0°C: 80% 5°C: 90% 25°C: 100% 45°C: 100% 50°C: 95%
Discharge Temperature & Actual Discharge Capacity (Relative to Nominal Capacity)	-20°C: 65% -10°C: 80% 0°C: 85% 25°C: 100% 45°C: 99% 60°C: 97%
Storage Temperature	1 Year: 0~25°C 3 Months: 0~45°C 1 Month: 0~60°C (Recovery ≥90% after storage)
Certifications	UL, FCC, CE, RoHS, EU Battery Regulation, IEC, CB, CCC, BSMI, BIS, PSE, MSDS, UN38.3
Best Uses	Power Tools: Electric drills, impact drills, screwdrivers, angle grinders, cutting machines, jig saws, circular saws, sanders, rotary hammers, demolition hammers, heat guns, glue guns, air compressors, electric mixers, pressure washers, trimmers, wrenches Garden Tools: Lawn mowers, robot mowers, hedge trimmers, grass trimmers, leaf blowers, chain saws, pole saws, brush cutters, pruners, sprayers, tillers, edgers, weed eaters, mulchers, power shovels, shears, cultivators, garden vacuums
OEM / ODM	Yes
Warranty	1 Year
Daily Production Capacity	250,000 Cells