AGM Deep Cycle Battery

• What is AGM Deep Cycle Battery?

AGM battery, also named Absorbent Glass Mat battery, is a kind of lead acid deep cycle battery that has been developed since the 1980s and now are highly advanced. The significant feature of the battery is its depth of discharge (DoD) rate of 80%, thus operating well at a wide range of temperatures. Besides, AGM batteries have a low self-discharge rate.

• What is better, lithium iron or AGM deep cycle batteries?

There’re pros and cons of lithium iron batteries and AGM deep cycle batteries. Lithium batteries have an average cycle life of 800 cycles, while AGM batteries only have 200-300 cycles. However, heat and cold resistance are two benefits of AGM batteries, as well as the ability to handle high power levels. Unlike lithium batteries, The AGM ones are sensitive to discharge depths. Battery cycles are reduced the deeper the battery is discharged.

• How do you charge a deep cycle AGM battery?

The most important consideration when charging an AGM deep cycle battery is to overcharge them to “top them off.” Besides, choosing chargers with AGM model selectors also does matter to charging. To maintain a longer lifespan and better performance, the AGM batteries would better not be charged if the temperature rises above 40 degrees Celsius or 104 degrees Fahrenheit.

• What is the open circuit voltage of an AGM deep cycle battery?

Open Circuit Voltage(OCV) is the voltage when the circuit is unloaded or uncharged for two hours without any load. A battery’s OCV may vary based on the materials the manufacturer made of, the temperature, or whether or not it is a new or old battery. Generally, an AGM battery should have an open circuit voltage of 12.8-13.0 Volts if it’s completely charged and unloaded.