Know before it dies.

Live levels for your keyboard, mouse, trackpad, and AirPods are free. Pro watches the trend and says how long is left, then warns you before the battery runs out rather than after.

Every accessory's level, without digging through System Settings.

The dropdown and the Accessories tab show the live level of every connected Bluetooth accessory. AirPods are broken out per bud and case. Devices that only publish battery over Bluetooth Low Energy, like Logitech's MX mice, are read too, matching what System Settings sees.

A few devices publish nothing at all. Those show "Battery unavailable" rather than a guess.

  • Keyboard, mouse, trackpad, and AirPods levels
  • AirPods per bud and case (L / R / Case)
  • Bluetooth Low Energy devices included
  • Honest about devices that report nothing
WhatBattery menu bar dropdown listing a keyboard, AirPods broken out per bud and case, and a mouse with their levels
Accessory level history chart with a runtime forecast in WhatBattery Pro

Will the mouse last the day?

Pro records each accessory's level over time and fits the actual discharge trend, so instead of a bare percentage you get an answer: about 3 days left, and roughly how long a full charge lasts. AirPods are framed the way you use them, as listening time.

  • Per-device level history with a chart
  • Time-till-empty from the real discharge rate, not a guess
  • Typical full-charge duration per device
  • "About 40m of listening left" for AirPods

A warning before it dies, not a dead mouse after.

The low-battery alert fires before the accessory gives up, and when there is enough history it says how long is left, not just how low it is. Pin one accessory's level in the menu bar, or show them all.

  • Low-battery notification with the time remaining
  • Fires once per crossing, no nagging
  • Menu bar readout for one accessory or all
WhatBattery showing accessory battery levels in the menu bar

Stop finding out when the cursor stops moving.

Accessory history, forecasts, alerts, and the menu bar readout are included in WhatBattery Pro.

Get WhatBattery Pro