While the battery is charging, hydrogen gas is being
PREPARING DRY CHARGE BATTERIES
given off through each vent cap. When hydrogen gas is
One day before installing a new dry charge battery,
mixed with air, the mixture is highly explosive and will
add the electrolyte solution to each cell.
explode in the presence of a spark or small flame.
1. Fill each cell to the bottom of the vent with
Never smoke near the area where batteries
If the battery is initially filled with water by
are being charged.
mistake, the battery is ruined and must be
1. Be sure the tray is free of objects which may
puncture the battery case when the hold down
2. Allow the battery to sit for several minutes to
traps awe tightened.
permit the battery plates to absorb the
2. Be sure terminal posts and cable clamps are
3. Add make-up electrolyte solution until the level
3. Place the battery in the tray. Tighten the hold
stabilizes. Once the level stabilizes, never add
downs evenly until the battery Is snug, Do not
anything but water.
4. Install the vent caps.
4. Connect the "hot" terminal first.
6. Remove the tape covering the vent hole In
5. Connect the ground terminal last.
6. Slowly charge the battery on e battery charger
until the specific gravity of the solution is at
Always connect the "hot" terminal first.
least 1.240 et a temperature of 80°F (27°C).
When the "hot" terminal is connected first, no arcing
can occur. If the wrench accidentally contacts both the
terminal end the frame or tray. The part that is
If the electrolyte solution temperature nears
contacted will take the same polarity as the battery
125°F (53°C) reduce the charging rate.
Temperature in excess of 125°F (53°C) will
By connecting the ground terminal first, the frame or
ruin the battery.
tray is connected to ground. Then, if the wrench
accidentally contacts the frame while connecting the
PREPARING WET CHARGE BATTERIES
"hot" terminal, a circuit is completed through the wrench.
The electrolyte solution was added by the
A hot spark will occur which could burn the person
manufacturer. Make-up solution must be water; never
holding the wrench, or possibly explode the battery if an
add electrolyte or acid to a wet charge battery. If
excess of hydrogen gas is present at any one of the vent
necessary, slowly charge the battery before using.
After connecting both cables, apply a thin coating of
USING A BATTERY CHARGER
grease over the cable clamps, terminals and hold down
A desirable charging rate can be calculated by
multiplying the amp-hour rating of the battery by .07
(7%). Shut off the battery charger before disconnecting
the booster charger clamps from the battery terminals.
TESTING THE ELECTROLYTE SOLUTION
The general condition of a battery can be determined
float must not drag on the wall of the barrel.
by measuring the specific gravity of the electrolyte
2. Read the hydrometer:
solution and adjusting the reading to 80°F (27°C). If the
1.250 or above - fully charged battery cell
electrolyte level is too low to allow taking a hydrometer
1.250-1.225 - full to half charged battery cell
reading, add make-up water to the correct level and
1.225-1.150 - half to low charged battery cell
then charge the battery 2 to 4 hours before taking a
Below 1.150. dead cell
1.000 - water
1. Insert the hydrometer into a cell. Fill the hydra
3. Test each cell in the same manner.
meter barrel while holding it vertically. The