In order to prolong the life of your CANON A2HI replacement battery please read the following:

Your CANON A2HI battery is charged during production in order to test it. Your CANON A2HI rechargeable battery will discharge between the end of the production and the moment you receive it. That is why your CANON A2HI 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 A2HI battery and prolong the life of your camera power supply.

Your CANON A2HI 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 A2HI battery will discharge. If you intend to leave your CANON A2HI 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 A2HI battery.

Rather than supplying original CANON A2HI batteries, we supply replacement A2HI batteries made by Uniross and Hahnel. Our A2HI 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 A2HI battery.