Yamaha TT-R90E, Owner'S Service Manual

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INSP
ADJ
BATTERY INSPECTION AND CHARGING
NOTE:
Since MF batteries are sealed, it is not possi-
ble to check the charge state of the battery by
measuring the specific gravity of the electro-
lyte. Therefore, the charge of the battery has
to be checked by measuring the voltage at the
battery terminals.
1. Remove:
●
Seat
●
Rear fender
2. Disconnect:
●
Battery lead coupler 1
(from the battery terminals)
NOTE:
Push down on the tab
a
, and then remove the
battery lead coupler.
3. Remove:
●
Battery
1
a
4. Measure:
●
Battery charge
Measurement steps:
●
Connect a pocket tester 1 to the battery
terminals.
Tester positive probe
→
battery positive terminal
Tester negative probe
→
battery negative terminal
NOTE:
●
The charge state of an MF battery can be
checked by measuring its open-circuit
voltage (i.e., the voltage when the positive
terminal is disconnected).
●
No charging is necessary when the open-
circuit voltage equals or exceeds 12.8 V.
●
Check the charge of the battery, as shown
in the charts and the following example.
Example
Open-circuit voltage = 12.0 V
Charging time = 6.5 hours
Charge of the battery = 20 ~ 30%
1