Energizer Recharge Universal Rechargeable C Batteries (2 per pack)These Energizer C rechargeable NiMH batteries are 2500mAh. They are sold in packs of 2 and are typically used in electronic devices. Features: Use for low drain devices such as radios, clocks, etc. Low self discharge rate gives cells extensive shelf life Capable of being recharged hundreds of times Specifications Physical Characteristics Type C Rechargeable Operating Temperature 32F to 122F (0 to 50) Battery Chemistry Nickel Metal Hydride (NiMH)