TM 9-2350-222-20-1-4
BATTERY TESTING AND REPLACEMENT (Sheet 4 of 13)
Read battery charge (specific gravity) on left
5.
scale at point where. dividing line between light
and dark (edge of shadow) crosses scale.
NOTE
If shadow edge is not sharp,
not
were
measuring
surfaces
sufficiently cleaned or dried. Clean
measuring surfaces and make new
test.
6.
Using pencil and paper, record reading.
7.
Repeat steps 1 thru 6 for each battery cell.
Check your recorded readings for all six cells of each battery against `the following table. Readings
8.
should be approximately the same.
Charge on
Specific
Battery
Gravity
1.280
Fully charged
1.250
Three-fourths charged
1.220
One-half charged
1.190
One-fourth charged
1.160
Little useful charge
Discharged
1.130
9.
If readings are approximately the same but are below 1.225 for any one battery, charge battery
and recheck.
Go on to Sheet 5
TA139843
10-292
