Kymco MO D50 Service Manual - chap 16 (imp ricarica)

16. BATTERY/CHARGING SYSTEM

16-0

16

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BATTERY/CHARGING SYSTEM

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CHARGING SYSTEM LAYOUT-------------------------------------- 16-1
SERVICE INFORMATION -------------------------------------------- 16-2
TROUBLESHOOTING ------------------------------------------------- 16-3
BATTERY---------------------------------------------------------------- 16-4
CHARGING SYSTEM -------------------------------------------------- 16-5
A.C. GENERATOR INSPECTION ------------------------------------ 16-5
REGULATOR/RECTIFIER INSPECTION --------------------------- 16-6

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16. BATTERY/CHARGING SYSTEM

16-1

CHARGING SYSTEM LAYOUT

CHARGING CIRCUIT

Fuse

Regulator/Rectifier

A.C. Generator

Battery

Battery

Y

W

5. 9Ω
30W

Wire Harness R

GRWGR

YYY

Auto
Bystarter

Fuse

Regulator/
Rectifier

Ignition Switch

P

Resistor

Resistor

A.C. Generator

Pulser Coil

10.2Ω
5W

L/Y

G/B

16. BATTERY/CHARGING SYSTEM

16-2

SERVICE INFORMATION

GENERAL INSTRUCTIONS

• The battery can be charged and discharged repeatedly. If a discharged battery is not used for a

long time, its service life will be shortened. Generally, the capacity of a battery will decrease after
it is used for 2_ 3 years. A capacity-decreased battery will resume its voltage after it is
recharged but its voltage decreases suddenly and then increases when a load is added.

• When a battery is overcharged, some symptoms can be found. If there is a short circuit inside the

battery, no voltage is produced on the battery terminals. If the rectifier won‘t operate, the
voltage will become too high and shorten the battery service life.

• If a battery is not used for a long time, it will discharge by itself and should be recharged every 3

months.

• A new battery filled with electrolyte will generate voltage within a certain time and it should be

recharged when the capacity is insufficient. Recharging a new battery will prolong its service life.

• Inspect the charging system according to the sequence specified in the Troubleshooting.

• Do not disconnect and soon reconnect the power of any electrical equipment because the electronic

parts in the regulator/rectifier will be damaged. Turn off the ignition switch before operation.

• It is not necessary to check the MF battery electrolyte or fill with distilled water.

• Check the load of the whole charging system.

• Do not quick charge the battery. Quick charging should only be done in an emergency.

• Remove the battery from the motorcycle for charging.

• When replacing the battery, do not use a traditional battery.

• When charging, check the voltage with an electric tester.

SPECIFICATIONS

Item

Standard

Capacity

12V4AH

Voltage

Fully charged

13.2V

Battery

(20℃ )

Undercharged

12.3V

Charging current

STD: 0.5A Quick: 5.0A

Charging time

STD: 5-10hr Quick: 30min

Capacity

160W/500rpm

A.C. Generator

Charging coil resistance (20℃ )

Yellow_ Yellow

0.6_ 1.6Ω

Charging rpm

1300rpm max (14V)

Charging performance

1.3A min/2500rpm 2.0A min/6000rpm
Regulator/Rectifier

Limit voltage

14.5±0.5V

TESTING INSTRUMENTS TORQUE VALUES

Ammeter Pulser coil bolt 0.5kg-m
Electric tester Coil lock bolt 0.9kg-m
Tachometer Flywheel nut 3.5_ 4.5kg-m

The battery electrolyte (sulfuric acid) is poisonous and may seriously damage the skin and
eyes. Avoid contact with skin, eyes, or clothing. In case of contact, flush with water and get
prompt medical attention