There is a warning label advising that ... both in charging time and in battery life. The original batteries are labelled as Nickel Metal Hydride at 1.2V and 550 mAh, which falls within common ...

Battery capacity is measured in either Milliamp Hours (mAh) or Watt Hours (Wh). Milliamp hours are a measure of electrical charge, while a watt-hour is equal to one watt of energy consumed for one ...