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Topics - FieldOfBirds

#1
Van Conversion / Strange battery behaviour and inverter
January 22, 2018, 12:22:24 PM
Hello everyone,

I've been having a lot of problems with my van's batteries. The setup is a main battery connected to with a leisure via split charge relay under the hood. There are then two leisure batteries in the back connected to solar that can also be charged via the hookup. It's a LDV convoy minibus conversion with an electric side door.

First the main battery was draining overnight which was due to a parasitic drain. That's now sorted, but it appears that there may now be something up with the leisure under the hood. The leisure was low (12.4) and the door wasn't opening so I connected the charger up to the leisure. The main battery was at 13.4. the leisure immediately jumped to 13.4ish (as expected) but... I then disconnected the charger straight away (to check the internal meter) and it STAYED at 13.4 with no charge running through, i.e. matching the main battery. The door now works. Just to clarify, I didn't pump any juice into it, just connected the two terminals via the charger for about 20 seconds.

Could this indicate and issue with the relay/charging system or wiring? I have never seen this before. The leisure battery was wet, so could water be an issue if it connects the terminals? Can someone maybe shed some light on this? I need to avoid this happening again as otherwise I get trapped in the van as the electric door is the only way out!

The second problem I now have is that the inverter in the back, connected to the leisures, is now showing a fault and making the awful squealing noise. It's just connected straight to the battery. Any ideas what this could be and how to problem solve?

Thanks
Sara