TM 9-6140-200-14
COMPENSATING FOR LOW TEMPERATURES:
Low temperature has a degrading effect on batteries and will affect test results.
This can be compensated by reading a different scale.
If battery is 50 degrees F, read scale 100 CCA less than battery rating.
If battery is 30 degrees F, read scale 200 CCA less than battery rating.
If battery is 0 degrees F, read scale 300 CCA less than battery rating.
Also, follow instruction that is over packed with the Battery Tester.
3-8. Measuring Specific Gravity with Battery Tester.
a. Optical Battery Tester ( Figure 3-1). This tester is quick, it uses no
mathematics, and automatically compensates for temperature. The following
procedures describes the use of the optical tester: Do not use this tester on
GEL type batteries.
WARNING
To prevent injury to personnel or damage to equipment,
be careful do not to splash electrolyte during battery testing.
(1) Test the battery before adding water.
3-6
