Deep Cycle Battery Agm Battery Charge Voltage Chart
A deep cycle battery is a type of battery that is designed to provide a steady amount of power over a long period of time. Unlike a standard car battery which is designed to provide a short burst of power to start the engine, a deep cycle battery is designed to be discharged and recharged repeatedly without sustaining any damage.
What is an AGM Battery?
An AGM (Absorbent Glass Mat) battery is a type of deep cycle battery that uses a fiberglass mat as a separator between the lead plates. The mat is saturated with electrolyte and is tightly compressed between the plates. This design allows for a higher energy density and a longer life span compared to traditional flooded lead acid batteries.
Charge Voltage Chart
Properly charging a deep cycle battery is crucial for maintaining its performance and longevity. The charge voltage chart below shows the recommended charge voltages for different stages of the charging process:
- Bulk Charge: 14.4 - 15.0 volts
- Absorption Charge: 14.0 - 14.4 volts
- Float Charge: 13.2 - 13.8 volts
The bulk charge stage is used to quickly charge the battery up to about 80% of its capacity. The absorption charge stage is used to complete the charging process and bring the battery up to 100% capacity. The float charge stage is used to maintain the battery's charge level over long periods of time.
Factors Affecting Charge Voltage
There are several factors that can affect the charge voltage of a deep cycle battery, including:
- Temperature: High temperatures can cause the battery to overcharge, while low temperatures can cause the battery to undercharge.
- State of Charge: A fully discharged battery will require a higher charge voltage than a partially discharged battery.
- Charge Rate: A higher charge rate will require a higher charge voltage to maintain the proper charge level.
Tips for Maintaining a Deep Cycle Battery
Here are some tips for maintaining a deep cycle battery:
- Charge the battery after each use to prevent it from discharging too much.
- Use a charger that is specifically designed for deep cycle batteries.
- Store the battery in a cool, dry place when not in use.
- Check the battery's water levels regularly and add distilled water as needed.
Conclusion
Properly maintaining and charging a deep cycle battery is essential for ensuring its longevity and performance. By following the recommended charge voltage chart and taking steps to maintain the battery, you can ensure that it will provide reliable power for years to come.