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Hi Everyone, After spending the last 2 months building my battery (48v, Lishen 272Ah cells, build thread here), I'm considering abandoning the TinyBMS s516 that I'm currently using. I like a lot of the features of the TinyBMS has, but it has a few quirks that I'm struggling to get around...

As part of my LiFePO4 build (48V, 272Ah), I've incorporated a 'system' for keeping the batteries above freezing (to enable charging in cold temps, if that wasn't obvious...). I'm pretty happy with how it turned out, so I thought I would provide the details in the 'Show and Tell' section. I'd...

Hi Everyone, Starting a build thread now that my cells are officially on US soil. The pack will ultimately be configured in as 16s1P feeding two 48V 3000W Growatt inverters (set up as an off-grid, split-phase 120/240 system). First off, here’s a summary of my Alibaba purchasing experience to...

Hi Everyone, While waiting for my cells to come in (16 x 272Ah Lishen) from China, I've been working on a top balancing setup. Objectives were 1) don't damage the cells, 2) get the job done in < 2 wks, 3) don't spend more than $100. After reading several threads related to top balancing with...

I’m working through the design of my 5kw off-grid system. I could use some feedback on my battery protection scheme. More specifically, on the placement and type of load and charge disconnect relays. Main system components: Inverter/charger: Phocos “Any-Grid” PSW-H, 5kw / 120V Panels: Two...

Hi Everyone, Noob here, so don't hesitate to call out any stupidity. And my apologies in advance if this is already discussed elsewhere in the forum...I searched...I swear. I'm in the process of designing an off-grid PV system for our farm. It seems that the 'grey-market' prismatic cells...