Hello everyone! I'm having trouble establishing in what year and month my Midac EW100 traction batteries were made. I have this code (339330) which is written on the top of the battery and I don't know how to read it and find out the year and month when they were built. I'm using them on a...

As I am planning to go ahead with my electric tractor conversion, and will use 12V SLAs (for low cost, where more weight is good, and usage will be only occasional). So I want to make a fairly simple but effective charging system and BMS for a string of 4 to 24 SLA batteries or even a single...