Question Chassis batteries installation procedure

[Sonic]

Hi
Is there any special sequence for removing cables to the two chassis batteries when replacing them (2014 Ventana all-electric)? I've read something about the inverter cable needing to be disconnected first, while others seem to have just turned off the chassis battery disconnect switch, unscrewed the battery studs (negative first) and lifted the negative harness, same for the positive side, swapped the batteries, then connected the positive harness, then negative and all was good.
Thanks

 

[scottramer]

I replace mine with just turning off the chassis battery switch. But as you mentioned, the inverter is still sending juice to the batteries with the switch off so you have to be careful.

I disconnected the negative first then the positive and wrapped the positive it so I did not touch it to ground. I Then reconnected the positive first then the negative.

 

[Joe Hogan]

You might find this useful

 

[J&JD]

There have been previous posts suggesting that you disconnect the positive terminal first in order to protect the inverter. You might do a search to check this.

 

[Sonic]

Thanks for the responses. I have other issues to work out so I decided to call GoodSam roadside and they sent a guy out to swap the batteries. I did warn him about keeping the positives isolated from ground, which he did. IMO $100 well spent.

 

[Sonic]

There have been previous posts suggesting that you disconnect the positive terminal first in order to protect the inverter. You might do a search to check this.

This is definitely true for the house batteries as disconnecting the ground first causes the inverter to seek ground through the data cables potentially frying anything connected to those ports like the ME-RC50 remote, battery monitor, AGS. It wasn't an issue for the chassis batteries.

 

[Old-RV'er]

I believe the HOUSE batteries are the ones connected to the inverter. The chassis batteries might have some parasitic loads on them, but should not be connected to the inverter at all. The inverter is for HOUSE SYSTEMS, not chassis systems. Removing the Chassis batteries would be "turn of chassis master switch", and then remove NEGATIVE TERMINAL FIRST, then the positives and remove batteries. I would take pictures before starting project to make sure you make the connections correctly. Personally all switches and breakers would be off if I was doing any work on batteries just to be safe. The generator should be I think connected to the chassis batteries, as those offer a better chance there will be enough juice to start it, if low power.