Weltoo INR series lithium-ion batteries are original cells without additional protection circuits. Make sure not to overdischarge or overcharge this battery while in use.
This INR21-40P is a high drain battery with a maximum discharge current of 40A.
Model: INR21-40P
Capacity: 4000mAh（Minimum capacity 3950mAh）
Internal resistance: ≤12mΩ
Voltage: 3.6V
Continuous discharge current : 40A（25 ℃）
Max. charger charging current: 6A (25℃)
Standard charging current:2A（25℃ ± 2℃）
Overcharge protection voltage: 4.2±0.05V
Over-discharge protection voltage: 2.5±0.1V
Cycle charge and discharge times: 250 times, the battery has 60% capacity
Charging temperature: +0~+45 ℃
Discharge temperature: -20~+75℃
Storage temperature: -20~+45℃ (Less than 3 months)
Dimensions: ≤21.3 mm (diameter), ≤70.3 mm (length)
Weight: ≤70g
Warnings :
Do not immerse the battery in water.
Do not place it near a heat source such as a fire source or heater.
Do not use over-discharge.
When charging, use a professional charger with overcharge protection.
Do not reverse the positive and negative poles.
Do not connect the positive and negative terminals directly to metal objects.
Do not pierce the battery with nails or other sharp objects.
Do not disassemble or modify the battery.
