Yamaha FZS1000N Service Manual page 115

CHECKING AND CHARGING THE BATTERY
Relationship between the open-circuit voltage
13.0
and the charging time at 20_C
12.5
12.0
11.5
5 6.5
Charging time (hours)
These values vary with the temperature, the condition of
the battery plates, and the electrolyte level.
10
3-52
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:
S seat
2. Disconnect:
S battery leads
(from the battery terminals)
CAUTION:
First, disconnect the negative lead 1 , then
the positive lead 2 .
3. Remove:
S battery
4. Check:
S battery charge
a. Connect a pocket tester to the battery termi-
nals.
Tester positive lead ! battery positive
Tester positive lead !
Tester negative lead ! battery negative
Tester negative lead !
NOTE:
S 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).
S 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 X 30%
CHK
ADJ
terminal
terminal