I have been studying up on lithium batteries for awhile now and have been wanting to build my own 36v battery. I have a fair number of 18650 cells, but not enough yet to have the Ah I am shooting for.
Recently I was gifted three Renogy 12v SMART 100Ah LiFePO4 batteries that are less than a year old. They had stopped taking a charge, which is why I ended up with them. After disassembly, I found moisture inside the cases and some corrosion on the BMS boards; I'm guessing that is the issue. I spent (wasted) a couple hours on the phone with Renogy only to discover the tech to whom I was speaking, knows very little about the BMS; what I DID find out is the Renogy 12v batteries are not equipped to be connected in series.
SO...I'm hoping to get the proper BMS to connect the 3.2v polymer cells. Currently the 12v batteries consist of 16 individual cells, wired 4 to a series (4 series of 4 cells). I'm assuming I would need a 12 series 100a 36v BMS to create a 36v system.
I could definitely use a little guidance here as to the best "bang for the buck" 36v BMS and any tips on how to proceed are most welcome.
Thanks in advance for any assistance and I appreciate all the knowledge here! I hope this is just the first of many Lithium battery builds!
Recently I was gifted three Renogy 12v SMART 100Ah LiFePO4 batteries that are less than a year old. They had stopped taking a charge, which is why I ended up with them. After disassembly, I found moisture inside the cases and some corrosion on the BMS boards; I'm guessing that is the issue. I spent (wasted) a couple hours on the phone with Renogy only to discover the tech to whom I was speaking, knows very little about the BMS; what I DID find out is the Renogy 12v batteries are not equipped to be connected in series.
SO...I'm hoping to get the proper BMS to connect the 3.2v polymer cells. Currently the 12v batteries consist of 16 individual cells, wired 4 to a series (4 series of 4 cells). I'm assuming I would need a 12 series 100a 36v BMS to create a 36v system.
I could definitely use a little guidance here as to the best "bang for the buck" 36v BMS and any tips on how to proceed are most welcome.
Thanks in advance for any assistance and I appreciate all the knowledge here! I hope this is just the first of many Lithium battery builds!