Battery: First Aid In Case Of Bodily Contact - Yamaha YW50AP Service Manual

Volt meter
(v) Relationship between open-circuit
voltage and charging time 20 C(68 C)
13.0
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.
12.8V
10
w
8
8
8
8
8
8
8
8
8
8
8