Wiese Lithium switch out

[MontanaChef]

Fully charged new battery and no power for my 5th wheel. Any suggestions? Just bought to replace my lead battery as everyone raves about lithium. All fuses are checking out okay. Could it be inverter?

[RacerX]

Lots to dig into there. Have you checked power at the battery? What voltage are you seeing there? By no power do you mean all power or ? Eg do dc lights work? Inverter wouldn’t affect those , How did you verify a full charge in the battery?
Of course the standard questions apply as well…. Did you cross the wires and reverse polarity? Is battery master cutoff engaged? Post more info please.

[MontanaChef]

Polarity is correct. Battery reads 13.2 on my hand meter. No bad fuses anywhere and no breakers tripped. When I disconnect from shore power I have 0 power to rig. Can’t even access my control panel. No lights, nothing. ????

[MontanaChef]

And this is the battery that I purchased.

http://WEIZE 12V 100Ah LiFePO4 Lithi...a.co/d/2SQRd29

[RacerX]

It sounds like the 13.2 volts (normal voltage for that battery at rest) is not making it from the battery into your coach. Without knowing the specifics of your connection I would be checking the connections from that battery into your rv. Somewhere in the line is the power disconnect which could be a dial type switch or a red plastic key switch. I would reset that switch/key as a first stop and then start tracing the line backwards. Also to eliminate the chance that it is a problem with the battery I would hook up a 12 v appliance directly to the battery to make sure it supplies power directly from the battery terminals like a air compressor or portable inverter for instance. Good luck.

[MontanaChef]

Thank you. I didn’t know that would reset the battery. I turned it off and then on. Success!