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 Topic: Battery Drains Whilst Towing
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24/6/2018 at 10:11am
Location: Plymouth
Outfit: Bailey Pageant Moselle
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Joined: 15/6/2018 Standard Member
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Morning Alex,
Haven't tested the voltage across the car battery today, but it isn't connected to the caravan and started fine first thing this morning, so no worries there.
The heat damage is mostly across the 15amp fuse for the battery, looks like a large current has passed through it for a while. I'll replace the fuses and keep an eye on them.
I moved the van on the motor mover while connected to the 240v connector as the van was stranded on the road and the battery was flat, this would, I believe cause some heat damage to the fuse as the ampage passing through must have been right on the limit for a few minutes. I know this is less than ideal but I was in a very sticky situation.
I replaced both of the caravan's connections when I fitted the car's towball as they were a real mess. I'll do a continuity test to make sure there's no breakdown anywhere and I have good core continuity.
I was testing from inside the van, I was putting my probes into the back of the connectors. Got different voltages for the permanent live and switched live from the car (the connector at the end of the grey cable). The voltage dropped on the switched live from 13odd volts to just over 12odd volts when the fridge was switched off and on, so I believe the alternator is doing a good job of powering the fridge. I fried the 10amp side of my multimeter ages ago so only have the milliamp setting but I guess I'd fry that too! (The 'fuses' in the multimeter must have been big as they haven't blown and the circuit board of the multimeter is cooked, buy cheap eh?!)
I've been testing the current draw by removing the fuse and using my multimeter in circuit in place of the fuse, I realise this gives no fuse protection, but the fuses haven't blown under normal operation so I'm comfortable with this.
I'll tinker again and do the checks discussed!
Cheers for now.
Luke.
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