New lithium house batteries (2)

[JWH11550]

I just replaced my lead acid batteries with new power queen lithium batteries. (the converter is supposed to recognize the switch over)

Will plugging the shore power into my home 120v power charge the new batteries?

 

[Boat Bum]

Did it before?

 

[JWH11550]

Did it before?

It had dead batts in it when I brought it home. They never charged significantly even after staying at a campground with 30a shorepower and driving 10 hours. That's why I got the new batts.

 

[Kevin D Pem]

If your system is working yes. If it has a lithium setting fully. If it doesn't less than fully.

 

[T’sOVR&Explore]

The LiFePo4 battery internal battery management system (BMS) is designed to charge the internal cell groups from a converter or charger that provides constant voltage of 14.4 volts dc to the battery terminals. After the BMS in each battery has brought the internal cell groups up to full charge, that battery will stop taking current from the charger or converter until the BMS decides to do a little more internal cell group charging.

A just installed Lithium battery may take several hours of charge current before the BMS ends the charge current demand. If you simply leave it connected to the converter / charger for a full day, then voltmeter-read the battery terminals with the converter / charger still powered and connected, you will read approximately 14.4 vdc if the converter charger has auto-detected or been set for Lithium battery service.

If you read only 13.8 vdc or similar coming out of the converter / charger (as might be the case if only flooded lead acid battery charging is supported), it is likely not set up properly for Lithium charging.

A battery monitoring system designed for LiFePo4 service, consisting of a negative terminal shunt and a small display, will show you exactly what is going on and is well worth the modest cost and simple installation effort.

Happy travels!

 

[AbdRahim]

Is your BMS capable of dealing with Li batteries. When I had mine done, they had to replace the BMS to prevent burning out the alternator. At least that was how I understood it. There are many here who understand such things far better than I. Perhaps someone will chime in here.