21700 Li-ion 3.7v 4000mAh battery

21700 3.7V 4000mAh Rechargeable Li-ion Battery - Performance and Reliability

Meet the 3.7V 21700 Li-ion rechargeable battery with an impressive capacity of 4000mAh, designed to meet your power needs. With its size of 21 x 70mm and light weight of 68g, this battery is easy to install in many devices, while providing stable and long-lasting performance.

Technical characteristics:

• Nominal voltage: 3.65V
• Nominal capacity: 4000mAh
• Internal resistance: Less than 20 milli-ohms
• Life cycles: More than 1000 cycles (80% DOD)
• Operating temperature: -20 to 60°C
• Charging voltage: 4.20V/cell

This battery is particularly suitable for electric vehicles, electric bicycles, scooters, golf carts, wheelchairs and various power tools. Its versatility makes it an ideal choice for energy storage, solar installations, as well as RC toys and LED lighting devices.

To maximize battery life, it is recommended not to discharge it below 2.5V. With a fast charge cycle capable of reaching 4000mA, the LiitoKala 21700 battery allows for efficient and fast charging.

We can supply this battery with solder tabs upon request, making assembly and installation easier. Don't let your projects run out of power, choose the 21700 3.7V 4000mAh Li-ion battery for reliable and optimal power!