Maha Powerex Precharged 8.4V 300mAh Low Self-Discharge Rechargeable NiMH Battery

Overview: The Powerex precharged rechargeable 9 V battery has a voltage of 8.4 V and a capacity of 300 mAh, with a minimum capacity of 270 mAh. The battery is capable of being stored and still retaining a full or nearly full charge. After a year, for instance, it will retain up to 85% of its capacity. This product comes pre-charged and can be recharged up to hundreds of times. The purchase of Ni MH batteries like this saves you money since you won't need to buy endless supplies of non-rechargeable alkaline batteries.