In order to prolong the life of your SANYO CLT520 replacement battery please read the following:

Your SANYO CLT520 battery is charged during production in order to test it. Your SANYO CLT520 rechargeable battery will discharge between the end of the production and the moment you receive it. That is why your SANYO CLT520 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 SANYO CLT520 battery and prolong the life of your camera power supply.

Your SANYO CLT520 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 CLT520 battery will discharge. If you intend to leave your SANYO CLT520 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 SANYO CLT520 battery.

Rather than supplying original SANYO CLT520 batteries, we supply replacement CLT520 batteries made by Uniross and Hahnel. Our CLT520 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 CLT520 battery.