rechargeables in cold temperatures

[bigthing]

hi all

can someone tell me if rechargeables retain their voltage and current,etc. like lithiums in cold temperatures?

thanks,mike /ubbthreads/images/graemlins/confused.gif

 

[Doug S]

[ QUOTE ]
bigthing said:
hi all

can someone tell me if rechargeables retain their voltage and current,etc. like lithiums in cold temperatures?

thanks,mike /ubbthreads/images/graemlins/confused.gif

[/ QUOTE ]

The open circuit voltage of all common rechargeable chemistries actually *increases* slightly with lower temperatures. Under typical loaded conditions, voltage and available capacity are lower at lower temperatures compared to room temperature. The degree of reduction depends upon temperature, load, and particular chemistry. Of the common rechargeable chemistries, lead-acid does least well at lower temps but all are better that alkaline primary cells. Note that even lithium primary batteries have reduced performance at lower temperatures.

 

[bigthing]

thanks,

so a nicad or nickel metal hydride will give good performance at cold temps like 5 degrees C. or so?

thanks, mike

 

[Doug S]

[ QUOTE ]
bigthing said:
thanks,

so a nicad or nickel metal hydride will give good performance at cold temps like 5 degrees C. or so?

thanks, mike

[/ QUOTE ]

Yes, they would have only a slight reduction in performance at 5C.

 

[bigthing]

Doug


Thanks for the info. mike