Ezgo MPT 1000 48V Owner's Manual page 64

MAINTENANCE PROCEDURES
Read all of this manual to become thoroughly familiar with this vehicle. Pay particular attention to all Notices, Cautions, Warnings, and Dangers.
DO NOT overfill batteries. The charging cycle will expel electrolyte and result in component damage.
A battery being charged will 'gas' with the majority of the gssing taking place at the end of the charging cycle. This gas is
hydrogen with is lighter than air. Water and sulphuric acid droplets will be carried out of the battery vents by the hydrogen gas,
however, this loss is minimal. If the battery electrolyte level is too high, the electrolyte will block the vent tube and the gas will
force it out of the vent tube and battery cap. The water will evaporate but the sulphuric acid will remain where it can damage
vehicle components and the storage facility floor. Sulphuric acid loss will weaken the concentration of acid within the electro-
lyte and reduce the life of the battery.
.
Over the life of the battery, a considerable amount of water is consumed. It is important that the water used be pure and free
of contaminants that could reduce the life of the battery by reducing the chemical reaction. The water must be distilled or puri-
fied by an efficient filtration system. Water that is not distilled should be analyzed and, if required, filtration installed to permit
the water to meet the requirements of the water purity table.
Even if the water is colorless, odorless, tasteless and fit for drinking, the water should be analyzed to see that it does not
exceed the impurity levels specified in the table.
Automatic watering devices such as the one included in the Battery Maintenance Kit (P/N 25587-G01) can be used with an
approved water source. These watering devices are accurate, easy to use and allow for rapid filling. They also maintain the
correct electrolyte level within the battery cells.
Page 58
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
Correct Electrolyte Level
Water Purity Table
Owner's Guide
Vent Cap
Gas Vent
Vent
1/2" (13 mm)