Lishen developed the LR21700SF all-round cell to cover a wide range of applications. Not only energy storage systems benefit from the cell's cycle stability, but also all other applications up to max. 13.5A discharge current.

The LR21700SF with 4600mAh nominal capacity and 13.5A (13500mA) discharge current.

For applications such as electric scooters, Segways, e-mountain bikes, model making, oat boards, e-cig battery carriers up to 50W, storage systems, powerbank, torches with own protection electronics.

Short profile of the company Lishen.

Lishen in Shenzhen (China) has been one of the premium Asian manufacturers for a long time. Besides other big names in the industry, Lishen supplies automotive, household goods and electronics manufacturers. "Lishen Battery works with many globally operating companies and manufacturers, including Apple, Samsung, Dell, HP, Huawei and Lenovo.

Information on battery size 21700.

The advantages of the new battery size: due to the larger volume, the performance can be significantly increased compared to the smaller 18650, even with identical "technology". The battery size 21700 will replace the standard size 18650 in the future.

Typical characteristics of the LR2170SF:

Discharge curves and evaluation.

www.e-cigarette-forum.com/LR2170SF

Safety instructions:

Note: Lithium cells may only be operated with protective electronics!
Please note that lithium cells may only be used by authorised specialist personnel.
Incorrect handling or short-circuiting may result in fire or explosion.

Further characteristics:

Lithium-ion batteries are thermally stable and are not subject to memory effect.
They work on the basis of lithium and are characterised by a high energy density.

Notes:

Charging lithium-ion batteries requires a special charger that charges the batteries according to a special charging procedure. (CCCV = constant current, constant voltage.) The batteries must not be charged above a voltage of 4.2 volts, otherwise there is a risk of fire and explosion. It is advantageous to charge the batteries only up to approx. 4.1 volts, as this significantly increases the service life or the number of charging cycles (possibly up to double). Only lithium-ion chargers may be used for charging. However, the cheap chargers sometimes have the disadvantage that they do not switch off safely at the end of the charging process, but continue to charge the batteries with a small charging current, which can be dangerous.

Furthermore, rechargeable batteries and batteries do not belong in household waste! Please dispose of them as prescribed by law at the municipal collection points or in the [usually green] containers provided by retailers.