8. Battery, Charging System
Overhaul standard
Item Standard
Model Permanent magnet
alternator
Output 3-phase AC
AC magneto
Resistance of charging coil (20℃)
0.2-0.3Ω
Rectifier Type
3-phase loop rectification,
controllable parallel
connection, regulated
voltage
Capacity 12V10Ah
Current Leakage Less than1mA
Fully-charged 12.8V Voltage between
terminals
Insufficient charge Less than 11.8V
Standard 0.9A/5~10hours
Battery
Charging current/time
Fast charge 4A/60minutes
Troubleshooting
Battery overflow
Incorrect Faulty Battery
Correct
Incorrect
Correct
Correct Incorrect
→
Incorrect
•Faulty rectifier •Short circuit with
• AC magneto has short
main cable
or open circuit. •Faulty ignition switch
Correct
Correct Charging system is correct.
Incorrect
Incorrect l •Main cable has short/open circuit.
•Faulty contact of connectors
Correct
8-3
Check battery with recommended test meter:
YUASA ‘ BM310 or equivalent
Measure the current leakage of battery. (→8-5)
Current: below 1mA
Inspect the charging coil of AC magneto.
Resistance: 0.2-0.3Ω
Inspect monomer voltage of battery and
record it. (→8-4)
Start engine, turn on headlight with high
beam.
Inspect battery’s voltage between
terminals at the engine speed of
5000rpm. (→8-5)
Standard: monomer voltage<charge
voltage<15V
Inspect rectifier system (→8-6)
Disconnect rectifier, and
measure current leakage
again.
Current: less than 1mA