TM 5-5420-202-20-3
BATTERY TESTING (Sheet 3 of 5)
Testing Using Hydrometer (Sheet 2 of 2)
Using correction chart (G), correct
8.
readings recorded in step 6 to 80F.
Example: Hydrometer shows 1.280
specific gravity. Electrolyte temperature
is 0F. Using correction chart (G),
note that for electrolyte temperature
of 0F, 0.032 is to be subtracted from
hydrometer reading. Therefore, corrected
reading is: 1.280-0.032 = 1.248.
Using pencil and paper, add all six corrected
9.
readings together and divide by 6 to
find the average reading for the battery.
10.
If average reading for battery is below
1.225, charge battery (TM 5-5420-202-10).
11.
If any two of six readings for battery are not
within 0.025 of each other, replace battery
Replace rubber battery cover (page 10-256).
12.
13.
Turn MASTER BATTERY switch to ON (TM
End of Task
T A2 4 9 2 0 1
10-260
