Quote:
Originally Posted by meeera
Definitely do the off-and-on-again etc - address the usual suspects. But I'd not be at all surprised if a device nearly four years old has a wearing-out or worn-out battery. Even if not well-used, these batteries have a limited life measured in years, not just in charge cycles. It's often quoted as "two to three years", though I've seen plenty of somewhat older devices still in use.
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2 - 3 years is/was the expected life of laptop batteries... Not only was battery tech less refined when those estimates were common, but laptop batteries are often used in the worst possible environment for LiOn,, (kept at a near full charge and at heated temperatures when the laptop is in use.)
Devices that do not generate heat and do not cycle charges over 2-3 days should last twice as long easy.