Question LiTime Over Charge Protection

[388Racing]

So I just upgraded to 2 LiTime 12v 100aH Lithium Batteries. I set them up in parallel. My Sunlite 21TH has the WFCO WF-8935-AD Converter with distribution panel. After installing the batteries the Converter changed from the Green LED to Blue indicating it is charging Lithium Batteries and using the Lithium algorithm. When the batteries are charged and showing 100% in the LiTime bluetooth app its also showing that the BMC on the battery has turned on the Over Charge Protection.

My question is this? Is this a normal thing for lithium batteries?

The 21TH came equipped with a 200 watt solar system and I disconnected the panel while trying to diagnose this and after the converter charged the batteries they again went into overcharge protection. Tomorrow I will stay unplugged from shore power and reconnect the panel to the controller to see what happens.

Thanks, and sorry if this sounds like a stupid question, I am new to all the RV stuff and managing a 12v system.

Thanks
Craig

 

[Kevin D Pem]

I assume the battery BMS is adjustable. It may be set for less than 100%charge. If that is the case don't worry about it and let the BMS protect your battery.

 

[388Racing]

I dont see anyway to adjust the BMS in the app and not sure what the over charge voltage would be. The Converter is suppose to be using between 14.4 - 14.6 v for charging.

I shot an e-mail to WFCO and also LiTime to see what they say. Just curious if anyone else has seen this.

Thanks

 

[TheLooks]

My guess is the WFCO is absorption or float charging higher then the Li-time wants it or the BMS is set wrong. I don't think you can go wrong letting the built in BMS handle what's good for your batteries.