If the battery is cooled much. its spoiled?

It depends.

Here is some good information on batteries:

http://batteryuniversity.com/
 
If it freezes or gets really cold, it'll provide less current, power and capacity(temporarily) but it'll do as good or even better when it warms up a bit as compared to a battery that was working in a warmer environment.

Basically, coldness lowers its performance(and the capacity you can use at the moment) but it also extends the battery's calendar life since the chemical changes are slowed, and performance will return to normal when it warms up again so it's not "spoiled" in a long term sense.
 
nutsandvolts said:
Batteries can be damaged by cold, but usually that would be VERY cold temperature.
I mean definitely below zero centigrade, I've seen batteries permanently die below -30C.
But a question is not as good without more detail, you don't even mention what type
of battery (lead acid? lithium cobalt? lithium manganese? LiFePO4?) and you didn't
mention how cold it got, also you didn't mention what it is or is not doing. Is it just
zero voltage, will it not take a charge?

It seems VERY cold in Mexico and Canada are two very different temperature ranges. :lol:

(My very cold is about -15 degrees Celsius.)
 
My experience with lead acid, is that they are ruined by heat, but the car still has enough juice to start untill winter, when the damage plus the cold results in not enough amps to turn the engine over. It takes a bit of cold to freeze sulferic acid but even mild cold can reduce output, so a heat damaged battery seems to fail in the cold.
 
nutsandvolts said:
Batteries can be damaged by cold, but usually that would be VERY cold temperature.
I mean definitely below zero centigrade, I've seen batteries permanently die below -30C.
But a question is not as good without more detail, you don't even mention what type
of battery (lead acid? lithium cobalt? lithium manganese? LiFePO4?) and you didn't
mention how cold it got, also you didn't mention what it is or is not doing. Is it just
zero voltage, will it not take a charge?

My battery is LIFEPO4

Thanks
 
nutsandvolts said:
Batteries can be damaged by cold, but usually that would be VERY cold temperature.
I mean definitely below zero centigrade, I've seen batteries permanently die below -30C.
But a question is not as good without more detail, you don't even mention what type
of battery (lead acid? lithium cobalt? lithium manganese? LiFePO4?) and you didn't
mention how cold it got, also you didn't mention what it is or is not doing. Is it just
zero voltage, will it not take a charge?

LIFEPO4
 
nutsandvolts said:
There is a big difference between batteries left out in the cold for a very long time and batteries used in the cold,
or left in the cold for a short time. I would think it's possible to damage LiFePO4 if batteries were left out in the
cold for a long time, like over winter unused, or for months at a time. Otherwise, I don't think cold will hurt them.

But what are the symptoms? No voltage at all? Will they not charge?

The battery has lost range of autonomy, but I think it is rather by the poor quality of the battery

Greetings
 
Cooled just how much? Many LiFePO4 specs say minus 20°C op temps and A123 says minus 30. Although I am unclear whether this applies equally to discharging and charging both. Actually it might be the associated electronics that only offer 0C as their low temp operating range? Dunno.
tks
lOck
 
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