In order to prolong the life of your PANASONIC GRAX25U replacement battery please read the following:

Your PANASONIC GRAX25U battery is charged during production in order to test it. Your PANASONIC GRAX25U rechargeable battery will discharge between the end of the production and the moment you receive it. That is why your PANASONIC GRAX25U 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 GRAX25U battery and prolong the life of your camera power supply.

Your PANASONIC GRAX25U 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 GRAX25U battery will discharge. If you intend to leave your PANASONIC GRAX25U 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 GRAX25U battery.

Rather than supplying original PANASONIC GRAX25U batteries, we supply replacement GRAX25U batteries made by Uniross and Hahnel. Our GRAX25U 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 GRAX25U battery.