Design Capacity: The original new battery had a design capacity of around 7150 mAh. Watt-Hours (Wh): The battery is officially a 54-watt-hour (or 55 Wh) lithium-polymer battery. Voltage: The operating voltage is 7.6 V. Replacement Battery Information When looking at replacement batteries, the stated mAh can sometimes vary slightly from the original specification. Common Aftermarket Capacity: Many third-party replacement batteries, such as those from iFixit and other vendors, are listed with a capacity of 7200 mAh at 7.6 V. Higher Capacity Options: Some aftermarket options offer a slightly higher capacity, with some brands advertising capacities of 7500 mAh or even over 8000 mAh. These often use a slightly different voltage (e.g., 7.4 V) to reach the same watt-hour rating as the original battery.
