USB charging capability increases flexibility. You no longer need an additional charger as this battery can be charged directly with a standard micro-USB charging cable (sold separately), but the ability to be charged in a charger or torch remains.

With integrated micro-USB charging port, making charging easier than ever!

With IC-Protection/PCB with short circuit, overcharge and deep discharge protection, the battery is suitable for all devices that do not have their own protection electronics and are perfectly protected against incorrect handling, guaranteeing a long service life.

The Keeppower P1621U with 2100mAh and USB charging option.

Charge your batteries in the charger or on the go at any USB-5V connection (smartphone power supply, powerbank, laptop, etc.), so you remain flexible and always have a charging option at hand.

Please note the dimensions of the cell before purchasing! Due to the built-in electronics, the cell is not suitable for every application!
Height and diameter are larger than a standard 16650 cell without PCB.

Safety instructions:

Please note that lithium cells may only be used by competent persons.
Incorrect handling or short-circuiting may result in fire or explosion.

Further properties:

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.

Scope of delivery:

1 x 16650 Keeppower battery with USB charging option.
When ordered in pairs (two pieces), the batteries are delivered with a battery storage box and USB cable for two batteries.

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 in the municipal collection points or in the [usually green] containers provided by retailers.