If the supply of replacement batteries give you the wrong temperature, there are ways out. That is, if you are competent and safety conscious.
Is there any way to report what the device thinks the temperature is? This is important for battery maintenance, but also many devices use that for waveform selection for Eink. I guess that this isn't Android, so you can't use a normal app for that?
You can reuse the BMS from the old battery and use the cells from the replacement battery. If you don't understand this, get some reliable tech friend to do the job for you.
Please don't burn down your house or injure yourself.
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