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@skaggetse I've been running your sw (a big thank you!) on pi zero's w/ some modifications for a few years now. I log all data points including cell voltage delta's into a database. I do believe with high confidence (cell delta's and PCB temps) that the four cells within the batteries do balance...

Great work! I would be interested in an ESP32/MQTT solution.

Not BYD, the 48V Li-Ion Power Pack utilizes the Nissan Leaf modules (LMO type).

BigBattery is similar to techdirectclub.com; it's an Eric Lundgren e-waste company (one of many). He has big plans for BigBattery! https://gizmodo.com/a-recycling-renegade-is-out-of-prison-and-ready-to-tack-1840417556

After some more research, I'm more impressed with the Pylontech batteries. Good cycle life, BMS seems to be better than most, and excellent price point. Unfortunately I can not find a US distributor, I might have to get a few from China directly. Also not UL certified, but they have a valid...

Hi Stuartornum, I've designed an ESS that participates in grid dynamic pricing and demand response (energy market). I currently use a couple Chargery c10325 programmable 1500w chargers. I've been charging daily a few different large battery systems 9kWh - 2.3kWh (Sony Fortelion, LG Chem, Tesla...