The following charging methods are recommended to ensure a long battery life: (Always use a voltage regulated charger with voltage limits set as described below.)
These batteries are designed for engine starting applications. They are not recommended or warranted for use in deep cycle applications.
Recommended Charging Information:
6.65 to 7.5 volts
Battery Charger (Constant Voltage):
6.9 to 7.5 volts; 10 amps maximum; 6-12 hours approximate
6.6 to 6.9 volts; 1 amp maximum; (indefinite time at lower voltages)
(Constant voltage charger) Maximum voltage 7.8 volts. No current limit as long as battery temperature remains below 125°F (51.7°C). Charge until
current drops below 1 amp.
All limits must be strictly adhered to.
(example assuming 100% discharge – 10.5 volts)
Recharge time will vary according to temperature and charger characteristics. When using Constant Voltage chargers, amperage will taper down as the battery becomes recharged. When amperage drops below 1 amp, the battery will be close to a full state of charge.