Cushman LSV 800 INTL Owner's Manual page 54

MAINTENANCE
Read all of SAFETY and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
Do not overfill with water. Too much water pushes the electrolyte from the battery by release of gas and a decrease in
volume of the electrolyte.
DO NOT overfill batteries. The charge cycle will expel electrolyte and cause component damage.
A battery being charged will 'gas' with most of the gassing
occurring at the end of the charging cycle. This gas is hydro-
gen, which is lighter than air. Water and sulphuric acid drop-
lets is carried out of the battery vents by the hydrogen gas,
but the loss is minimum. If the electrolyte level is high, the
electrolyte blocks the vent tube and the gas pushes it out of
the vent tube and battery cap. The water will dry but the
sulphuric acid will stay and damage the vehicle components
and the storage facility floor. Sulphuric acid loss weakens the
amount of acid within the electrolyte, and decreases the life of
the battery.
Over the life of the battery, a large amount of water is used.
The water used must be clean and without contamination.
Water that is not clean decreases the life of the battery by
reducing the chemical reaction. Use distilled water or filtered
water only. Test water that is not distilled and filter if needed.
Refer to the water purity table for requirements.
46
Expansion
Space
1/4" to 3/8"
(6 mm to 10mm)
Plates
Electrolyte level should be at least 1/2" (13mm) above the
plates and 1/4" to 3/8" (6 to 10 mm) below vent
Impurity
Color
Suspended
Total Solids
Calcium & Magnesium Oxides
Iton
Ammonia
Organic & Volatile Matter
Nitrites
Nitrates
Chloride
Owner's Guide
Vent Cap
1/2" (13 mm)
Correct Electrolyte Level
Water Purity Table
Gas Vent
Vent
Parts Per
Million
Clear
Trace
100
40
5
8
50
5
10
5