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Th ere
are two potential problems with
lead-acid batteries in cold weather.
One is that at 32 degrees F. a fully-charged
battery will produce less that half
of its normal capacity. As the battery
is discharged and/or the temperature
drops even lower, the battery efficiency
is decreased even more drastically.
The second problem is that batteries
that are not kept almost fully charged
are susceptible to having the electrolyte
freeze which may crack the shell
or damage the plates. A three-quarter
charged lead-acid battery is in
no danger of freezing. Below that
charge level the risk increases
significantly.
NEVER PUT ANY OTHER SUBSTANCE OTHER
THAN DISTILLED WATER INTO A BATTERY.
This will destroy the battery.
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