One of the most important specifications of a rechargeable battery is the cycle life; i.e. the number of charge / discharge cycles a battery can withstand, without loosing it´s capacity.

Unfortunately this is also one of the most difficult parameters to determine, because many other parameters influence the cycle life.

With the new characteristics of eneloop Sanyo could increase the cycle life to a nearly double level of a standard rechargable battery. You may recharge eneloop up to 1,500 times and more