I've a close friend who's company is replacing their stock of backup batteries they use for the companies servers. He said I could have any of the batteries for free before the recycling company collects them. He's not sure what use the batteries got while connected but most of them are only 3 years old, the oldest would be 7 years old. I found an online manual for disassembly of such packs online, it seems like it's just made of 48 cylindrical lithium cells.
Type: EMC 078-000-110
Nominal Voltage: 39.6V
Maximum Charge Voltage: 46V
Capacity: 364 Wh - 9.2 Ah
I'm new to this hobby but I'd love to actually use the whole packs for something, I love the idea of being able to connect a couple of them in parallel with an inverter and basically have a whole powerwall. The pack is already encased and has groves for racking and unracking. I could easily get some plastic extrusions and with 3D printing build a rack for them.
My main issue is I just don't have the time to test the packs at the cell level as the recycling company will be taking them soon. I also don't know how good the batteries are as a whole, they could be great or they could be awful. I am wondering if I can use the ICharger X12 to test the pack as a whole? Are there any better alternatives? I just want to get a good idea what the pack is like as quickly as possible.
Additionally the packs do have some sort of onboard PCB, I am wondering if it's the BMS for these packs? Could I somehow use/hack into this PCB and use that instead of another BMS? I'm guessing there could be a firmware block? Because if there is any sensors or data access with this PCB, I'd love to be able to use that for data monitoring or just to make my life easier.
Overall, do you think it's possible to use these whole packs for a behind-the-meter set up?
I'd love to hear what you think and if you have any considerations. Thanks in advance for any feedback.
Type: EMC 078-000-110
Nominal Voltage: 39.6V
Maximum Charge Voltage: 46V
Capacity: 364 Wh - 9.2 Ah
I'm new to this hobby but I'd love to actually use the whole packs for something, I love the idea of being able to connect a couple of them in parallel with an inverter and basically have a whole powerwall. The pack is already encased and has groves for racking and unracking. I could easily get some plastic extrusions and with 3D printing build a rack for them.
My main issue is I just don't have the time to test the packs at the cell level as the recycling company will be taking them soon. I also don't know how good the batteries are as a whole, they could be great or they could be awful. I am wondering if I can use the ICharger X12 to test the pack as a whole? Are there any better alternatives? I just want to get a good idea what the pack is like as quickly as possible.
Additionally the packs do have some sort of onboard PCB, I am wondering if it's the BMS for these packs? Could I somehow use/hack into this PCB and use that instead of another BMS? I'm guessing there could be a firmware block? Because if there is any sensors or data access with this PCB, I'd love to be able to use that for data monitoring or just to make my life easier.
Overall, do you think it's possible to use these whole packs for a behind-the-meter set up?
I'd love to hear what you think and if you have any considerations. Thanks in advance for any feedback.