Chery QQ Service Manual Charging System
3. With the polar protective circuits, some chargers won’t charge until the lead is
appropriately connected to the terminal post of the battery. The fully discharged
battery has not enough voltage to activate the whole circuit. Even though the lead is
correctly connected, the battery can’t accept charging current. So this circuit should be
bypassed according to the special regulations of the charger manufacturer so as to
switch on the charger and charge the low-voltage battery.
4. The voltages and current values provided by battery charger differ from each other.
With each voltage, the measurable charging current that can be accepted by battery
needs the following time:
Voltage： A：over 16……………… 4 hours
B：14-15.9……………… 8 hours
C：less than 13.9……16 hours
After the above-mentioned charging time ends, if the charging current can’t be
detected yet, the battery should be replaced; if the charging current can be detected,
the battery is good, which can be charged in the normal way.
5. Always remember that only when the fully discharged battery is charged to enough
ampere hour (AH) can it be used again. According to experience, the charging ampere
hours basically equals the nominal AH plus an additional 30% of it, which is usually
used to charge the normal battery. For example, the required AH for the 45AH battery
fully charged is 45×1.3=58.5. So, you are recommended to charge with a low ampere
but for a long time. For example:
3 ampere×20 hours……………… 60AH or
5 ampere×12 hour……………… 60AH etc.
You are recommended to conduct load test to the battery recharged in this way so as
to check its operational capability.
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