Inspect battery health

Health reflects how much of the battery's original capacity is still available. Reduced health means your battery ages faster and holds less power with each charge.

To check your Mac battery health, open the Menu, click the Battery monitor, and see Health.

CleanMyMac calculates battery health as a ratio between the actual capacity and the designed capacity, measured in milliampere-hour (mAh). We receive these values directly from the battery driver software.

The lower the current capacity, the lower the battery's health and efficiency. For example, if your new Mac once lasted 10 hours on a single charge, at 70% health, it would now last approximately 6–7 hours. This is a general estimate; resource-heavy apps can drain the battery faster.

Another important factor: when battery health falls below 80%, its efficiency drops significantly, meaning it holds a charge much worse than at higher health levels.

The CleanMyMac Menu shows health values from the following common ranges:

• 80% or more (normal)

  Your battery is in good condition but may have lost some capacity.

• 79% or less (warning)

  Your battery has lost some capacity but remains functional.

• 10% or less (critical)

  Your battery is in poor condition and should be replaced soon.

• No value (unavailable)

  Battery health can't be calculated at the moment.

Age and charge cycles aren't the only factors affecting battery efficiency. The following also have a significant impact:

• The temperature range your battery operates in

• Your charging habits and patterns

We've compiled a lot of recommendations on improving battery life in our blog. macOS also offers features to help maintain battery health, such as:

• Battery health management for Mac computers with Apple silicon or Intel processors

• The 'Optimized battery charging' setting