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Does the figure below meet the criteria / recommendation for the total length of positive and negative cables being the same length? I **think** that it does, but I'm hoping someone can confirm or refute my understanding ;-) Note - not drawn to scale...

Does the forum infrastructure have some way to look at an entire thread at once? I'm particularly interested in the Valence battery superthread at the moment, but the question applies equally to others I've found. It's really cumbersome if I'm looking for certain things to not be able to...

Today’s possibly-stupid question. What combination of metal and other materials do people use to bolt down lugs to battery terminals? Knowing nothing, I would think a regular stainless steel bolt, with a lock washer.. but since I just said I know nothing, I’m asking. I haven’t tried to...

I was thinking about bus bar sizing and this occurred to me... when we size wires, we care about the cross section (i.e. diameter/radius) of the wire. For busbars all the ampacity tables are ALSO a function of cross section, a 2mm x 10mm busbar is 20mm2 or 40kcmils, and so on. But if one of...

I have a few questions related to charge voltages for LFP batteries... note that these are all somewhat abstract and theoretical based on what little I know and what lot I don't know ;-) -- (assume all numbers here refer to a 12.8v nominal 4s LFP battery) 1. Charge an LFP battery at lower...

As I'm thinking about what I want to end up doing (for me this is a much a science project/learning experience as an actual use case) I realize that it would be super useful to have a large handful of cables, with lugs, of all different lengths and connector/lug sizes. However, I quickly...

There are several all-in-one inverter/chargers that all look shockingly similar in how they're constructed, wired, the manuals, etc etc etc. If I had to bet they are likely all sourced from the same or a small set of base suppliers and then have some various seasoning applied in terms of things...

I'm working on basically a homebuilt UPS, this is by far the best forum I've been able to find so thanks to everyone who's already helped (and how much stuff I've read already)... I've got a line on some half-used Valence LFP batteries and they're cheap enough to justify playing around with for...

My use case is something along the lines of: "I want to be able to have a KWh or two available as backup power, with a load that won't exceed more than 400W sustained with peaks of 700W for a couple of seconds." If I really really stretch my brain out, I guess I could see maybe needing to run...

So after a year of farting around watching youtube and lurking forums I've sort of decided to do a nerd project and see if I can progress through some combination of "hack an existing UPS for longer runtime where I don't have to replace stupid lead-acid batteries every year" and eventually end...

Hmmm... I've got a cyberpower 1350AVR UPS where the SLA batteries finally gave up the ghost and died, so I decided to replace them with a couple of LiFePo4's -- after basically replacing the SLA's every 18 months or so I was hoping to get off that stupid train ;-) So I bought a pair of form...

So I found this: https://diysolarforum.com/threads/understanding-aio-idle-power-consumption.41017/ Which is somewhat close to what I'm asking but not quite... I see values for "idle power consumption" in the spec sheets of a lot of these inverters/AIO's ... but what isn't clear to me is which...

So I totally understand how an AIO inverter/charger/xfer switch works: the internal logic makes sure that none of the electrons try to go the wrong directions at the wrong time ;-) But, if you've got a case where you have a separate inverter and charger, and both of these are wired to the...