Yamaha 2006 RX10GTAXW Service Manual page 801

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.
BATTERY INSPECTION
10
2-45
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. Disconnect:
S Battery leads
(from the battery terminals)
CAUTION:
First, disconnect the negative lead 1 , then
the positive lead 2 .
2. Remove:
S Battery
3. Inspect:
S Battery charge
Inspection steps:
S Connect a pocket tester to the battery termi-
nals.
Tester positive lead ! battery positive
Tester negative lead !battery negative
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.
S Check the charge of the battery, as shown in
the charts and the following example.
Example
S Open-circuit voltage = 12.0 V
S Charging time = 6.5 hours
S Charge of the battery = 20 X 30%
INSP
ADJ
terminal
terminal