Safe way to test low temperature charging cutoff?

Is it possible to non-destructively test the low temperature charging shutoff of a commercial LiFePo4 battery? I bought a cheap battery to play around with that claims to have a 32f charging cutoff, but no one seems to have done a tear down of one.

I have a lab power supply. Can I test with a tiny amount of current or is any amount going to damage it?

You could put the self-contained battery in freezer for a day or two.

Won't hurt battery to test it for presence of a little charging current for a minute.

camelCase said:

no one seems to have done a tear down of one.

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I think you should do it (for science!) and post the results

fratermus said:

I think you should do it (for science!) and post the results

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I'd be very interested in hearing about said results.
I just bought 2 Bate Lithium 100Ah packages to replace my 140Ah harbor freight custom AGM 'portable' box.

I presently have one of the Bate boxes outside, at 31°F (according to my laser thermo gun). Its been there for 1 hr, and the internal temperature, according to the cheapo little monitor on the box is still 2°C / 35°F. (maybe its self heated?)

The mfg for my Bate boxes advertises they come with low-temp cutoff BMS. But when asked for details, those make no sense to me. Am I reading these wrong ?
According to them, the battery temp range is 23°F to 147°F
However, their BMS is set to cut off at -4°F.
Isn't that useless ?

camelCase said:

Is it possible to non-destructively test the low temperature charging shutoff of a commercial LiFePo4 battery? I bought a cheap battery to play around with that claims to have a 32f charging cutoff, but no one seems to have done a tear down of one.

I have a lab power supply. Can I test with a tiny amount of current or is any amount going to damage it?

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I read that a 0.02C - 0.01C charge should not destroy the battery. Its just impractical. That would be 1-2A for a 100Ah battery.
I was thinking that if you have access to the BMS sensor lead, you could wrap it in thin plastic to keep it dry, and then invert and spray canned air onto it. This is not precisely safe though, as the spray can reach -60F...
Try at your own risk.