In order to prolong the life of your PENTAX PVC840E replacement battery please read the following:

Your PENTAX PVC840E battery is charged during production in order to test it. Your PENTAX PVC840E rechargeable battery will discharge between the end of the production and the moment you receive it. That is why your PENTAX PVC840E 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 PENTAX PVC840E battery and prolong the life of your camera power supply.

Your PENTAX PVC840E 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 PVC840E battery will discharge. If you intend to leave your PENTAX PVC840E 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 PENTAX PVC840E battery.

Rather than supplying original PENTAX PVC840E batteries, we supply replacement PVC840E batteries made by Uniross and Hahnel. Our PVC840E 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 PVC840E battery.