In order to prolong the life of your PANASONIC BP15L replacement battery please read the following:

Your PANASONIC BP15L battery is charged during production in order to test it. Your PANASONIC BP15L rechargeable battery will discharge between the end of the production and the moment you receive it. That is why your PANASONIC BP15L battery will have to be charged before you use it. You can use your existing charger or an external charger this will optimize charging of your PANASONIC BP15L battery and prolong the life of your camera power supply.

Your PANASONIC BP15L rechargeable battery discharges slowly and progressively when not in use. The self discharge rate is about 1% of the battery's capacity per day at room temperature. The higher the temperature, the faster your BP15L battery will discharge. If you intend to leave your PANASONIC BP15L battery for a prolonged period without use then a service charge is recommended from time to time, taking in to account the self discharge rate and time between using your PANASONIC BP15L battery.

Rather than supplying original PANASONIC BP15L batteries, we supply replacement BP15L batteries made by Uniross and Hahnel. Our BP15L batteries have a two year warranty, represent excellent value and meet or exceed the original specifications. We also offer free delivery on all our products including the BP15L battery.