Cellphones refuse to charge batteries
September 8, 2013 9:58 AM Subscribe
This has happened over at least 3 different cellphones, from HTC and Samsung. The battery will work fine for months, and then the phone will lose the ability to recognize that it is charging.
posted by IAmBroom to technology (12 answers total)
This is true regardless of whether it's being charge off of a USB port on a computer, or directly from a charger off of a power strip. The phone literally stops recognizing that it is charging - the charge light won't come on, and immediately after removing the cord the phone warns of low charge, or even abruptly shuts down.
I say the phone is doing this, because currently my "3.7 V" battery is at 3.56 V - hardly empty - and yet the phone will report that the battery is critically low; it will shut down briefly after I start using it untethered.
When I have 2 batteries available, I can switch to the 2nd battery, which will work for a while... until it too begins acting unchargeable. Sometimes the 1st battery will be usable then; sometimes it continues to be recognized as "unchargeable".
My best guess is that the phone's "definition" of the minimum battery charge level rises, until it reaches the fully-charged level - and so even the slightest deficit becomes a huge depletion of the battery. If the battery is left alone long enough to drop to an actual 0-V level, the phone then seems to reset the minimum at a correct level. But that's just a guess, based on what I've observed above.