In order to prolong the life of your CANON BP-511 replacement battery please read the following:

Your CANON BP-511 battery is charged during production in order to test it. Your CANON BP-511 rechargeable battery will discharge between the end of the production and the moment you receive it. That is why your CANON BP-511 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 CANON BP-511 battery and prolong the life of your camera power supply.

Your CANON BP-511 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 BP-511 battery will discharge. If you intend to leave your CANON BP-511 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 CANON BP-511 battery.

Rather than supplying original CANON BP-511 batteries, we supply replacement BP-511 batteries made by Uniross and Hahnel. Our BP-511 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 BP-511 battery.