Battery Spy measures the time it takes for your battery to empty. The application monitors your battery uptime in a simple, accurate, and elegant way. The counter starts the moment you unplug your AC adapter. Regardless of whether you unplug it at 100% or 65%, Battery Spy will count down the time it takes for your battery to empty (or until you plug in your AC adapter again).
Most comprehensive tool for gaining vital information about your MacBook's battery...
Keep your Mac battery healthy. A healthy battery is one that is regularly depleted and charged all the way back up.
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