Welcome to the forum. I agree that it sounds like a battery issue. We’re you able to verify you hooked up the new batteries exactly as the old ones? Hopefully, a few of our 12 volt experts will weigh in.
Al
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2023 Newmar Bay Star 3014, towing 2014 Honda CRV
2017 Winnebago Adventurer 35P
2013 Itasca Sunstar 26HE
I'd check the chassis battery. Pretty sure both Gen start and Jacks are powered by the chassis batteries. Could be you got a bad battery or a bad connection.
Do your slides show any low voltage errors?
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2017 Winnebago Adventurer 37F
2016 Lincoln MKX Toad
Your correct the Chassis batteries do the work, both are new both test 100%
The slides operate off the same battery and I have been concerned but no indication.
I still think it's a negative (grounding) problem but can't find the grounding lug on the frame near the chassis batteries. Any ideas? Thanks
There is a reset procedure for LCI Jacks. Give them a call and have them email the procedure to you. They may give you some other advice as to what is going on.
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Wayne MSGT USMC (Ret) & Earlene (CinCHouse)
2015 Winnebago Tour 42QD - 2020 Lincoln Nautilus Reserve (TOAD)
(RVM-14) It is what it is, and then it is what you make of it.