LuTNT

I also recently bought one from Voltex. Mine was manufactured in 2023. I was skeptical about the charge left in the battery once I noted the manufacture date. Voltex salesman told me they sold lots of these with no returns so far. I have another 2 I bought. 1 in Aug and 1 in Nov 2024 from Harolds. This is my 3rd battery then. Powering up the battery the SOC was roughly 48%. I was happy that it still had a decent amount of charge so connected it to my system as a slave. I assumed the other 2 bought from Harolds will be newer so one of them should be master. I have been running it for a week now and seems ok.......but different. Inverter (Deye 5Kw) Still says 200 amp charge and discharge. I assume it is not picking up the BMS of the 3rd Voltex battery. Is there a way I can check and verify manufacturing date of the other 2 Harolds batteries? (They were bought 3 months apart) I just want to make sure they are the newer ones and that I don't have it the other way around. The Voltex battery is showing lower or higher SOC than the other 2. I charge it to 100% so the SOC should be calibrated. I assume there are no comms to that battery and that led me to this forum. (Hi Im new here 1st post!)