Several factors could cause solar batteries not to charge properly. Here are some common reasons:
- Limited sunlight exposure: It sounds stupid. We know. But if the sun’s not out, your panels won’t be charging your batteries.
- Faulty panels: Check for any damage or faults in your solar panels or their connections. If your battery only charges from the panels, and they’re not charging, and you know for a fact that the battery is in perfect working order, then the issue might be the panels.
- Battery issues: The batteries themselves might be faulty or damaged, preventing them from accepting a charge. Check the battery connections, terminals, and overall condition to ensure they’re in good working order.
- Temperature extremes: Very hot or cold temperatures can affect battery performance. If it’s snowing, or if it’s boiling hot, your battery won’t perform as normal.
If you’re unable to identify and fix the issue, it’s best to seek help from a qualified solar technician or installer.