♻️Li-Ion Size: This 3.7V rechargeable li-ion battery pack is made of 2Pcs 2000mAh Power Cells. Total Capacity: 4000 mAh, Working Voltage: 3.7V, Size: 68*36.5*19mm/2.68*1.44*0.75Inch. ♻️Wide Application: This Rechargeable Lithium Ion Battery Pack can be used for walkie talkie, electric drills, Fishing lights, RC Cars, LED Headlamp, Digital Camera, Mobile speakers,etc. ♻️Multi-protections: This Li-ion Rechargeable Battery Pack with overcharging, over discharge, over current, short circuit protection and steady voltage circuit. ♻️Low-self Discharge: Can be recharged up to 1000 times with no memory effect, more economical. Can maintain 80% capacity for 12 months use. 📌Warm notice: please confirm the battery type and connector type of your electric devices before order.

No memory effect and rechargeable, Longer storage life than NiMH battery

Chemistry Li-ion

Nominal Voltage (V): 3.7

Capacity (mAh): 4000

Please note: The positive and negative power connections are incorrect and may damage your device.