How do I tell if my car battery is dead or if it's the alternator?
Jump-start the car. If it starts and then dies a few minutes later, the alternator is the problem — the battery was…
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Batteries
Practical, step-by-step fixes for batteries problems — 40 published so far.
How to fix Android battery drain caused by Google Play services?
Google Play services often drains Android batteries when its cache is corrupted or background sync loops; clear the app cache and data,…
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How to test a battery with a multimeter
To test a battery with a multimeter, set it to DC voltage, touch the red probe to the positive terminal and black…
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Why does my car key fob battery die after two weeks?
A key fob battery that dies in two weeks usually means the fob is constantly transmitting due to a stuck button, water…
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Why does my cordless drill battery die quickly after sitting unused for months?
A cordless drill battery that dies quickly after months of storage usually has self-discharged below its safe voltage, triggering the protection circuit…
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Why does my iPhone battery drain overnight after iOS 17 update?
Your iPhone battery drains overnight after the iOS 17 update because background app refresh, location services, or a stuck process are consuming…
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Why does my iPhone battery drain overnight while idle?
Your iPhone battery drains overnight because background app refresh, push mail, or a rogue app keeps the processor awake; check Battery settings…
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Why does my iPhone battery percentage jump from 20% to 5% then shut down?
Your iPhone's battery percentage jumps because the battery's chemical age or a software calibration issue makes the phone misread its true charge…
See the fixWhy does my laptop battery say 'plugged in, not charging' and how do I fix it?
Your laptop shows 'plugged in, not charging' because the battery driver or firmware needs a reset, the charger isn't delivering enough power,…
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Why does my laptop battery say 'plugged in, not charging'?
Your laptop shows 'plugged in, not charging' because the battery management system has paused charging to protect battery health, often due to…
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why does my laptop battery say plugged in not charging on Windows 11
Your laptop shows "plugged in, not charging" because Windows has paused charging to protect battery health, the battery driver is corrupted, or…
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Why does my laptop battery stop charging at 80 percent?
Your laptop likely has a battery conservation feature enabled that limits charging to 80% to prolong lifespan. Disable it in the manufacturer’s…
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