Does Coldness Really Fix Electronics or is There Another Trick?

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Tom.G said:
IIRC when Li batteries are deeply discharged they WILL NOT accept a charge.

Ahh, found it! There is a built-in protection circuit.
https://batteryuniversity.com/learn/article/low_voltage_cut_off

Cheers,
Tom
So the link above shows the absence of "boost" circuitry intended for revival of deeply discharged battery is common in mobile chargers. Therefore, more likelihood of "poorly designed charging controller" as diagnosis of initial problem.
 
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Coldness fixes electronics? No way - what fixes electronics is a good hard slap! (experience from 15 years as a part-time electronics serviceman).
 
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Svein said:
Coldness fixes electronics? No way - what fixes electronics is a good hard slap! (experience from 15 years as a part-time electronics serviceman).
A hard slap to the top of the electronics enclosure actually helped vacuum tube devices. Apparently the jolt helped seat pins loosened by normal on/hot off/cold cycles. This was also when we waited for electronics to "warm up".