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 ~ 30% LLL L L LLL L L LLL L L LLL L L LLL L L LLL L LLL Charging Ambient temperature 20 °C (68 °F) 5. Charge: battery (refer to the appropriate charging method illustration) Open-circuit voltage (V) _ Do not quick charge a battery. WARNING Time (minutes) Check the open-circuit voltage. CAUTION: _ Never remove the MF battery sealing caps. Do not use a high-rate battery charger since it forces a high-amperage current into the battery quickly and can cause battery overheating and battery plate damage.
If it is impossible to regulate the charging current on the battery charger, be careful not to overcharge the battery. When charging a battery, be sure to remove it from the vehicle. (If charging has to be done with the battery mounted on the vehicle, disconnect the negative battery lead from the battery terminal.) To reduce the chance of sparks, do not plug in the battery charger until the bat- tery charger leads are connected to the battery. Before removing the battery charger lead clips from the battery terminals, be sure to turn off the battery charger. Make sure the battery charger lead clips are in full contact with the battery termi- nal and that they are not shorted.
A cor- roded battery charger lead clip may generate heat in the contact area and a weak clip spring may cause sparks. Ambient temperature 20 °C (68 °F) Open-circuit voltage (V) Charging condition of the battery (%) 3 - 75 CHECKING AND CHARGING THE BATTERY CHK ADJ Relationship between the open-circuit volt age and the charging time at 20 °C (68 °F) (V) voltage Open-circuit Charging time (h These values vary with the temperature and the condition of the battery plates. - ours)