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See video of what happens when running under moderate load at this link: The pack voltage stays constant, but each cell voltage appears to jump around by around 0.02v according to the app but using my (admittedly terrible & cheap) multimeter it shows constant voltages. My multimeter only goes...

Yes I was mostly concerned with the voltage drop - Just trying to figure out what devices (if any?) can handle lower voltages and still be functional. The fan works for my use case because lowering the voltage is one way to lower the RPMs of the fan (and I won't likely ever use the max rated RPM...

I ordered some 2/0 stranded wire and received 18 awg wire instead. The company told me to just keep the 18ga wire rather than ship it back, so now I'm wondering what can even be powered by such a tiny wire? I have a computer fan + pwm controller I'll be using this with now since voltage drop is...

I have a 12v lifepo4 battery with a 1500w inverter and various dc loads (fridge, lights, phone/laptop charging, misc outlets). I was thinking the best way to wire it up is to have one line directly from the battery to the inverter with a bolt on fuse, then another wire going from the battery to...

Update after capacity test: The cell that was overcharged was definitely damaged with what appears to be increased internal resistance since it gets a semi-significant voltage drop when under load (compared to the other 3 cells). It's voltage drifted lower than the rest of the cells starting...

Yes although I already wired in parallel so I'm top-balancing first. I'll test the low cell cutoff while i'm doing the capacity test, then do a high cell cutoff test when i'm charging back up afterwards

My parameters are set to 3.65 over and 2.5 under which is the commonly accepted maximum and minimum and was recommended by the seller of my bms. SmoothJoey is saying you could set it to something like 3.2 over and 3.0 under. Then you can ensure the bms cuts off charging once it is at 3.2v and...

No bloating (see pic of the cell) but it was in an enclosure while charging. No smell that I can tell, but it had been sitting out for a long time (8+ hours) so it's possible the smell has dissipated. I did hook it up in parallel which reduced the voltage down to around 3.38 pretty quickly, but...

I received 4x 280ah eve cells and am using the overkillsolar 120a 4s bms. I have the bms paramaters set to cut off at a per cell voltage of 3.65 and pack voltage of 14.6. I received all my cells awhile back but had some supply issues getting the bms, so I waited almost 2 months before beginning...

I put 1/32 thick rubber in between each batteries for insulation purposes. It cost me around $5 and took 2min to cut to size. I think that's worth it for the peace of mind & it's so small it doesn't really affect the reach of the bus bars at all...

I went with 3/8" (close to M8) solely because I already had nuts, washers, and vinyl tubing of that size. I think 1/4 (close to M6) would work just as well for the amount of clamping pressure needed

You are 100% correct i just didn't have it nearly tight enough! Thank you so much

Maybe I'm misunderstanding, but I believe I've tried that and still have the issue where the rod spins instead of the nuts? I tighten the single nut while fixing the opposite end's nut in place with another wrench. But instead of the single nut spinning down the rod & clamping down, it instead...

So i've seen lots of pictures and recommendations of people using threaded rod & plywood to clamp their cells. I'm making a 4s battery with the 280ah eve cells now and am having trouble figuring out how actually build the dang thing with threaded rod (which i've never used before) I have...

Fwiw I did go with the 120a overkill solar bms. Steve said it should be able to handle short loads at full capacity no problem, and surges above it for a small amount of time as well. For the efficiency you're right. The inefficiency means that for 2000w output, you'd need 2000/0.88 = 2300w...

I'm receiving my 4 cells next week from a recent group buy and am making sure I am ready for the next steps. Once they are received the first thing to do is to balance the batteries, then capacity test them, correct? What items are needed for these activities? For balancing, all that is needed...

I joined in on a group buy for the 280ah eve cells but have been putting off buying a BMS as I'm quite new and keep getting overwhelmed when trying to figure it out. I will have a 4s 12v system and am planning on having a 1500w inverter. Outside of the inverter, the loads would be a 12v fridge...