Project Description
Battery Depth of Discharge AIMS Power AGM batteries
| State of Charge | 12 Volt battery | Volts per Cell |
| 100% | 12.7 | 2.12 |
| 90% | 12.5 | 2.08 |
| 80% | 12.42 | 2.07 |
| 70% | 12.32 | 2.05 |
| 60% | 12.20 | 2.03 |
| 50% | 12.06 | 2.01 |
| 40% | 11.9 | 1.98 |
| 30% | 11.75 | 1.96 |
| 20% | 11.58 | 1.93 |
| 10% | 11.31 | 1.89 |
| 0 | 10.5 | 1.75 |
A battery is considered dead at 10.5 volts. The answer is related to the internal chemistry of battery – at around 10.5 volts, the specific gravity of the acid in the battery gets so low that there is very little left that it can do. In a dead battery, the specific gravity can fall below 1.1. The DOD voltage is only achieved after the load is removed and the battery is at a resting state, typically a recovery of @ least 2 hours. Under a load the battery voltage can drop to 11.00V and then recover to 12.5V once the load is removed. Because of this our inverters are designed to accept a wide range of DC voltage down to 10V.
