NiMH 600mAh Prismatic Rechargeable Battery. Part No. RB601.Power: 1.2V 600mAh Nickel Metal Hydride.Size: 17mm x 34mm x 16mm.Brand: Prismatic.Equivalent to: H600-3/5F6S.These are suitable to suit Sanyo, Panasonic and others.We have been supplying appliance parts to the trade and retail for over 25 years. Buy with confidence.