Yamaha RX10H Service Manual page 64

Charging method using a constant voltage charger
YES
Charge the battery until the battery's
charging voltage is 15 V.
NOTE:
Measure the battery open-circuit voltage
after leaving the battery unused for
more than 30 minutes.
12.8 V or more --- Charging is complete.
12.7 V or less --- Recharging is required.
Under 12.0 V --- Replace the battery.
BATTERY INSPECTION
Measure the open-circuit
voltage prior to charging.
Connect a charger and
AMP meter to the battery
and start charging.
Make sure that the current
is higher than the standard
charging current written on
the battery.
Set the charging time at 20 hours
(maximum).
NOTE:
This type of battery charger cannot
charge the MF battery. A variable
voltage charger is recommended.
2-48
INSP
ADJ
Voltage should be measured 30
minutes after the machine is stopped.
NO