This rechargeable power pack is a prefect replacement for a worn-out
Sony NP-BN1 pack or an excellent spare. It's from a German company known
as a world leader in the battery technology field. Advanced lithium-ion
chemistry provides long-lasting, reliable power, minimal weight and
excellent storage life, thanks to very low self discharge
characteristics. Since it doesn't exhibit memory effects, you can safely
top up the charge, to ensure you always have a fresh spare on hand.