Yamaha 5KR2, Service Manual

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3-41
Volt meter
Relationship between open-circuit
voltage and charging time at 20
C
Open-circuit voltage
Charging time (Hours)
This varies depending on the temperature, the state of
charge in battery plates and the electro lyte level.
CHECKING AND CHARGING THE BATTERY
CHK
ADJ
NOTE:
CAUTION:
NOTE:
Since MF batteries are sealed, it is not possible
to check the charge state of the battery by mea-
suring the specific gravity of the electrolyte.
Therefore, the charge of the battery has to be
checked by measuring the voltage at the battery
terminals.
1. Remove:
right side cover
1
band 2
battery cover 3
2. Disconnect:
battery leads
(from the battery terminals)
First, disconnect the negative lead
1
, then
the positive lead 2 .
3. Remove:
battery 3
4. Check:
battery charge
a. Connect a pocket tester to the battery termi-
nals.
Tester positive lead battery positive
terminal
Tester negative lead battery negative
terminal
The charge state of a 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-cir-
cuit voltage equals or exceeds 12.8 V.
b. Check the charge of the battery, as shown in
the charts and the following example.
Example
c. Open-circuit voltage = 12.0 V
d. Charging time = 6.5 hours
e. Charge of the battery = 20
30 %
5. Charge:
battery
(refer to the appropriate charging method il-
lustration)