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Chery QQ Service Manual
Charging System
Chapter 2
Charging System
Section 1 Battery
. General Information
In the electric system, the battery has three functions. First of all, it is the energy
source of starting engine and the car; Secondly, it acts as the voltage regulator of
electric appliance system; Thirdly, when the load of electric appliance exceeds the
output of generator, it can provide supplementary energy source for some time.
If the test result of the battery is good, but it is not satisfying during the use, it may
result from the following factors:
1. The ancillary equipment keeps active.
2. The average traveling speed of the car keeps low for a long time.
3. The load of the electric appliance exceeds the output of generator, in particular
while the additional equipment is added to the original configuration.
4. The charging system doesn't run well, e.g. resistance is too high, driving belt skids,
the terminal post on the output end of the engine gets loose, generator or voltage
regulator falls into malfunction.
5. The battery, including cable terminal post of it, has impurity on it, or it is not
fastened, or the holding-down device of battery gets loose.
6. The electrical equipment has such mechanic problems as brittle failure or pinch-off
of wire etc.
Visual Inspection
Check for obvious damage, such as cracking or breaking of shell and cover, which
may cause the efflux of electrolyte. If such obvious damage exists, the battery should
be replaced immediately. After the reason for such damage is found out, some
modification should be made, if it is necessary. If the reason keeps unknown, further
experiment shall be made to conduct further study.
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Troubleshooting
