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That's a pretty cool unit! Might keep it in mind if I need it for another project. I'm either going to go with a couple of isolated 30-amp converters, or just buy the 60-amp non-isolated converter and deal with it.

That's my understanding: one BMS per string of batteries. I welcome other input here if I'm flat-out wrong.

So I've done some Googling and Amazon searching and so forth, but I must be searching for the wrong thing. I'm looking for an extremely simple thermostatic switch that I can use with a 80mm computer fan. I want it to turn on (close the circuit) when it's around 80°F or more, and turn off when...

Thank you, that's a very clear description of what's likely going on. I'll try your idea next about setting it at 14.0 volts and leaving it for a day to see what it does. I just completed another experiment: Pulled the battery out of the box. Was sitting at 12.7 volts (even though it's fully...

Yep, it is, and for my purposes, close enough.

I'm building a tiny LiFePO4 battery bank with some 12v outlets, USB outlets, and a voltmeter. Basically an over-sized USB battery bank. To charge the batteries, I found a nifty buck/boost converter that would take anything from 8v to 40v (dc) and convert it to 13.8v DC. This will almost fully...

Yeah, I figured it wouldn't be quite that easy. I do have the option of splitting up the loads into different circuits, which I'll probably do. I have found a single converter that can handle the necessary loads, but it doesn't have an isolated ground for each side of the conversion, and that...

The current inrush couldn't possibly be more than the "short circuit" value of 250amps @ ~51.2v = 12,800 watts. It's a household vacuum that a Jackery could run. It's not that big! I don't have a clamp meter that'll show me the max inrush is. It'd be nice to have, but I know the value can't...

Signature solar kept the battery and gave me a partial refund.

I understand regarding the input voltage being lower resulting in the higher draw, but the input and output voltages were 13.4 and 13.8 respectively, so it was still operating well beyond spec. I noticed the "converter output must be greater than output connected device required power", but I...

Ah ha! That's the key. "Normally Open Thermostat Switch" is the key phrase I wasn't thinking of and led me to my solution. A quick search yielded the product below, which is perfect for my situation. It uses zero current, it's tiny, and super-simple to wire up. Thank you everyone...

I've never even heard of a EMI filter. Oh, I'm just now remembering -- we also hooked that same vacuum up to my rig, running an Outback inverter (3600 watts) and my DIY LiFePO4 48v battery bank (with an Overkill Solar BMS), and it had no troubles. That setup (which was much more expensive than...

Sigh… you're likely right. How does Jackery and others create a product where they have a single input and it can handle a variety of source types? That's what I'm trying to replicate. On the DC-DC front, the cheapest I'm finding is the Renogy 20amp unit at around $110. I haven't found any...