If you are wondering how to know the charge of your batteries for solar panels, the first thing you should keep in mind is that you need to observe the indicators of the charge regulators. Of course, to know the real value of the charge it is important to check the battery level without it receiving power. Otherwise, the displayed value may not correspond 100% to reality.

Thanks to solar regulators, the charge level of a solar installation battery can be checked. These devices have a screen that indicates the state of the battery at that moment. Of course, the charge levels will vary somewhat depending on the brand of battery in question. For this reason it is important to take the values with stabilized batteries as a reference.

1. In 12 V battery systems the battery charged to 100% will show 12.7 V. If it is at 75% it will show 12.5 V. At 50% 12.2 V and at 30% 12 V.
2. In 24 V battery systems, the battery charged to 100% will show 25.4 V. If it is at 75% it will indicate 25 V. At 50% 24.4 V and at 30% 24 V.
3. In 48 V battery systems, the battery charged to 100% will show 50.8 V. If it is at 75% it will indicate 50 V. At 50% 48.8 V and at 30% 24 V.