MAINTENANCE
Read all of SAFETY and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
is carried out in an ideal state during charging, the process should be reciprocal reversible reaction, that is, the charged electric
quantity is basically equal to the released electric quantity.
If charging parameters do not match or the charger type is not accurate, the charging voltage is too high, the current is large or
the charging time is long, the water loss rate of the battery will increase. For the AGM battery, the serious gas evolution will
damage the battery and cause early failure of the battery.
① The scouring effect of a large amount of gas on the active material of the electrode plate makes the active material easy to
fall off.
② Under higher polarization voltage, the grid of positive plate will be seriously corroded, and make grid deformation, brittle
crack, lose the skeleton and
conductive function, so that the life of the battery is shortened.
1)
If charging is insufficient for a long time, unreacted active substance will produce irreversible coarse lead sulfate grains,
that is irreversible sulfate salivation (or sulfurization for short), which will reduce battery capacity, increase internal resistance,
increase charging difficulty, and cause early stage of the battery invalid.
2)
Therefore, the battery should be fully charged to prevent irreversible sulfation.
5.2 Discharge Prevention
The protection voltage set for the battery unit is 1.75V/unit, when the power meter remind of low voltage or there is power failure
during usage of the vehicle, do not use battery's rebound voltage continue driving the vehicle. The battery voltage at this time is a
false voltage, continued use will lead to over-discharge of the battery pack, excessive deep discharge will lead to shedding and
softening of active material of the battery positive plate, and also intensify the corrosion, eventually lead to reduction in battery
capacity and battery life.
Therefore, battery should be charged before low voltage alarm of the vehicle meter, or battery should be repalced at the
recharging station. The replaced battery should be charged in time, if idle for a long time, it will also lead to reduction of battery
capacity.
5.3 High and Low Temperature Prevention
When batteries are operated in high temperature season, there is risk of overcharging.
When battery temperature increases, the activity of various active substances increases, the positive electrode oxygen evolution
potential decreases, the negative electrode hydrogen evolution potential also falls down. Therefore, the ability to accept charging
increases, charging reaction speed up, and charging current is big, which requires low voltage for charging the battery full. To
prevent high charging voltage, battery temperature should lower down to ensure good heat dissipation.
Keep away from heat sources, do not charge under the sun, and avoid charging immediately after sun exposure.
In low temperature environment, various active substances of battery are less active, the positive electrode charging acceptance
capacity is reduced, and the negative electrode charging is affected by the swelling agent, and the low temperature charging
acceptance capacity is even lower.
Therefore, charging at low temperature have the problem of poor charging acceptability and insufficient charging, which requires
increase charging voltage and prolong charging time. In particular, charging should be placed in a warm environment, as described
in 4.1, and stored indoor for 1hr before charging. It is beneficial to ensure sufficient charge, prevent irreversible sulfation and
extend the life of battery.
5.4 Prevent Short Circuit
Under battery short circuit state, its short circuit current can reach thousands of amperes. Therefore, the connection part will
produce a lot of heat when short- circuiting, which will fuse the connection, damage surrounding sealant or shell, and cause hidden
dangers like leakage.
Therefore, the battery must not short circuit, it should be more careful during installation or usage. All tools used need take
insulation measures, the connection wire should be connected to the appliances outside the battery first, after checking no short
circuit, finally connect to the battery.
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