OPERATION AND SERVICE INFORMATION
42
Owner’s Manual and Service Guide
The most important things to avoid:
1. Freezing: Avoid locations where freezing temperature is expected. Keeping a battery at a high state of
charge will also prevent freezing. (See Table2)
2. Heat: Avoid direct exposure to heat sources, such as radiators or space heaters. Temperatures above 80°F
accelerate the battery's self-discharge characteristics.
Procedure:
1. Completely charge the battery before storing.
2. Store the battery in a cool, dry location, protected from the elements.
3. During storage, monitor the specific gravity (flooded) or voltage. Batteries in storage should be given a
boost charge when they show a 70% charge or less. See Table 1 in the Testing Section.
4. Completely charge the battery before re-activating.
5. For optimum performance, equalize the batteries (flooded) before putting them back into service. Refer to
the Equalizing section for this procedure.
Table2 Electrolyte Freezing Point @ Various States of Charge
Specific gravity
g/cm（）
3
State of char ge(%)
Freezing
temperature( )℃
1.280
1.265
1.250
1.200
1.150
1.100
100%
92%
85%
62%
40%
20%
-68.9
-57.4
-52.2
-26.7
-15
-7.2
Battery Terms Explained
1. Active Material——In the positive plates, the active material is lead dioxide. In the negative, it’s metallic
sponge lead. When a circuit is created, these materials react with sulfuric acid during charging and
discharging.
2. Ampere (Amp)——A unit of measurement for the electron flow or current through a circuit.
3. Ampere-Hour (Amp. Hr., AH)——A unit of measure for a battery’s electrical storage capacity, calculated
by multiplying the current in amperes by the time in hours. ( Example: A battery which delivers 5 amps for
20 hours provides 5 amps ×20 hours = 100 AH of capacity.)
4. Capacity Rating——The time in minutes that a new, fully-charged battery will deliver 25 amperes or 75
amperes at 800F and maintain a terminal voltage equal to or greater than 1.75 volts per cell.
5. Cell——The basic current-producing unit in a battery. It consists of a set of positive plates, negative plates,
electrolyte, separators and casing, A cell’s nominal voltage is 2 volts.(Example: A 12-volt battery has 6 cells.)
6. Circuit——The path followed by a flow of electrons. A closed, or short, circuit is a complete path. An
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