Yamaha BT1100 2002 Service Manual page 92

CHECKING AND CHARGING THE BATTERY
Voltmeter
Relationship between open-circuit
13,0
voltage and charging time at 20 °C
12,5
12,0
11,5
5 6,5
Charging time (Hours)
• This varies depending on the temperature, the state of
charge in battery plates and the electrolyte level.
NOTE:
Since MF batteries are sealed, it is not possible to
check the charge state of the battery by measuring
1
the specific gravity of the electrolyte. Therefore, the
charge of the battery has to be checked by meas-
uring the voltage at the battery terminals.
1. Remove:
2. Disconnect:
1
+
CAUTION:
First, disconnect the negative lead 1, then the
-
positive lead 2.
3. Remove:
2
4. Check:
a. Connect a pocket tester to the battery termi-
Tester positive
lead
Tester negative
lead
NOTE:
• 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-circuit
voltage equals or exceeds 12.8 V.
b. Check the charge of the battery, as shown in
Example
c. Open-circuit voltage = 12.0 V
d. Charging time = 6.5 hours
e. Charge of the battery = 20 ~ 30 %
5. Charge:
10
3-38
INSP
• seat
• storage compartment 1
• battery leads
(from the battery terminals)
• battery
• battery charge
nals.
Battery positive
terminal
Battery negative
terminal
the charts and the following example.
• battery
(refer to the appropriate charging method
illustration)
ADJ