WattGuard
Mac battery resources
Start with the symptom you can reproduce. A Mac that loses charge while asleep needs a different investigation from one that drains while running apps or after being fully shut down. These guides help you measure, narrow the cause and compare a reversible change.
Last updated
Find out why a MacBook loses charge in sleep by measuring a baseline, checking wake activity, testing one change, and comparing the next sleep.
GuidesInvestigate repeated Mac wake-ups with a controlled baseline, accessory and network checks, and a careful comparison after one change.
GuidesUse Activity Monitor, battery history, and controlled comparisons to identify likely Mac battery drains without guessing from one reading.
GuidesTroubleshoot MacBook battery loss with the lid closed by checking whether it slept, isolating accessories, and comparing controlled sessions.
GuidesUnderstand battery loss while a MacBook is shut down, distinguish it from sleep, check battery condition, and know when service is appropriate.
GuidesInvestigate sleep drain on an Apple silicon MacBook with controlled sessions, activity checks, and Apple Diagnostics without inappropriate SMC advice.
GuidesFind sleep-related battery loss on an Intel MacBook by comparing sessions, isolating wake triggers, and using Intel-specific troubleshooting only when relevant.
GuidesInvestigate battery drain after a macOS update by measuring comparable sessions, checking active processes and battery condition, then testing one change.
Use the sleep and closed-lid guides for overnight problems. Use the app-activity guide for drain while working, and the shutdown guide when the Mac was actually powered off. Apple silicon and Intel guidance is separated where the diagnostic steps differ.
Tell us what you’d like WattGuard to do, or share an unusual battery or sleep issue. We’ll help investigate your case, and what we learn could become a future WattGuard feature.
Include your Mac model, macOS version, what happens and what you’ve already tried.