upnorthandpersonal

Sunsynk 1MWh LFP battery container is fully insulated with climate control (heat pump), fire suppression system, alarm and has also...

Locked thread.

Both are bad. Ultrasonic weld for the win! /let's not go into this discussion again. They both have advantages and disadvantages.

PCBs don't crimp well, the fiberglass isn't very happy when you do that ;)

From cable to lug/ring terminal, yes. On the PCB, soldering is just fine.

No, I just cut off a piece of copper bar and drilled three holes. Crimped on the lugs/ring terminals which I got at the local hardware...

Depends on how you mount it, etc. I just go to a combiner bus bar with the two leads, and go with bigger wire where I have to go from...

Technically, you shouldn't rely on the BMS for day to day operations. It's a safety device, the last line of defense, the thing that...

The 1MWh container made with LFP cells my lab just bought, with an ability to provide 200kW power output, tells me otherwise.

So simply put 8 packs (16 cells each, even say 15kWh each) in parallel. That's 4000A of current, and 120kWh of storage. Energy and...

Of which you can use 50%, so 35kWh. That same 35kWh LFP costs me 2800 Euro in cells now.

Yeah, or even lower (71 Euro for Envision cells). Shipping from The Netherland to Finland is a few hundred Euro.

I'm at 63 degrees north in Finland with 100kWh of LFP powering my off-grid house. You put them in an insulated box with a small 7W...

Why lead acid? You can get LFP even here in Europe for 80Euro/kWh cell price. And you wouldn't have to worry about 50% discharge etc.

You won't get maximum power transfer from the panel to the motor by hooking them up directly. You likely need to do some matching, i.e...

Cannibalism?!?! I bet that one had antlers just few minutes ago...

Like I said, second winter here now with snow, as @shadowmaker points out and temperatures below freezing. Perfect for a stew made in...

Still snowing...

What is the Voc on those panels?

I wasn't talking about cells getting imbalanced at the end of the charge cycle. I was talking about newly bought cells, to be put in a...