Most reacted posts

I’ve just bought them; I’ll report back

Yes, they work great! I no longer see a pool of water on the bottom of the panels

280.5 Ah; luckily I was watching the screen and managed to take a screenshot, because as soon as it starts charging again I lose the capacity information shown at the bottom

They were discounted from £180 to £144 soo I hit the trigger and bought 16 https://www.fogstar.co.uk/collections/lifepo4/products/eve-lifepo4-280ah-prismatic-cell I see they also sell cases, but they fit 4 each, is there any point in storing 16 cells in 4 different cases? I guess I would still...

It’s simple physics my young padawan

I have now tested the one I believe to be the least capacity cell, because it's the one triggering the low voltage protection when the pack is fully discharged. I did not test this cell when new, so its original capacity is unknown. Its current capacity is 263.30 Ah, 847.58Wh (test conditions...

I guess I can test this by setting the ‘cell heating recovery’ high enough and confirming that the temperature increases but the SoC does not

Do you mean a bare rigid wire wrapped around each stud?

Hi, I also have a Seplos BMS and a Sofar inverter (ME3000SP), possibly even the same cells if you bought them from Fogstar; I can try and help you with what I know. What model of inverter do you have?

I'm planning on building an off grid 12kW system with 30kWh battery. The panels I'm looking at have an open circuit voltage of ~50V and I was going to create two strings of 12 panels each, but I can't see many MPTTs accepting 600V, so maybe I need to limit myself to 9 panels per string, 10kWp...

I totally agree with you, but this time I’ve done it this way Have you brought this up with the admin, since there is a pinned ‘how to top balance’ guide that uses a different theory?

My point was that in my case the inverter will never run it down to 0% (or low voltage cutoff)

Or could I just use two wires from the bms to the inverter?

If this is the 10E version (with bluetooth); momomer overvoltage protectiom and total voltage overvoltage protection are the only triggers for 100% capacity I.e. the bms will reset to 100% whenever one of those is reached In my case, I think my inverter uses the bms SoC value to know when to...

I've finally bought another EBC-A40L and I'm currently testing the same cells I tested 15 months ago. They have since been cycled 224 times. I'm using the same logic as before: charge to 3.65V with cut off current of 5A, wait 30 minutes, discharge till 2.5V Here is a comparison of my first...

I ended up doing the same, 200mm copper flat bar cut in half and drilled 3 holes in each (7mm I think); I used a bolt and nut for the central ring terminal connection (couldn’t find my tapping kit to make a thread)

The only reason I see to have a bigger battery is to take advantage of solar production grater than the power that the mower’s charger is able to deliver (let’s say 2kW) Or for taking advantage of the early morning production, where the peak power hasn’t yet reached the mower’s charger power...

No, I bought from Fogstar uk; 280Ah grade A cells have been 144£ each since Black Friday

After exactly one year, I've tested the battery from fully charged (total voltage at 3.65x16V with active balancer on and Seplos BMS reset to 100% after 30 minutes above 56V) down to 2.5V on the lowest cell The BMS measured 258Ah; voltage deviation at the end of the test was 220mV. The...

Yes, exactly. It was easy to mount them parallel to the roof; I know I could get better performance by tilting them, but I prefer to keep them like this. I have thought of cutting a channel in the frame but I don’t want to risk damaging them I have seen these on Amazon, do they work?

It has: - charge low temperature protection: no charge and no heating below this temp - charge low temperature alarm: reduced charge current below this temperature - cell low temperature heating: heating pads on below this temperature but only if also charging at the same time (and not below low...

No, I just found them while actually looking for panels with pre cut drains (which I had seen before) They seem to work as a syphon, although I don’t understand how they can create a completely sealed channel

The shunt is inside the bms; if DC solar isn’t going through the bms then it’s not going into the battery, hence it should be fine

So what you’re all saying is ‘don’t bother compressing them’, right?

Last year I tested 4 of them with the Zketech EBC-40L and they were between 278.3 and 280.5 Ah; I sold the Zketech shortly after, so I cannot repeat the same measurement. Also, I didn't test them as a full battery when new as I hadn't worked out how to discharge them to lower than 10% with my...

I have 16 EVE LK280 Grade A which I had top balanced about a month ago; they are normally all at the same voltage at high state of charge, but a couple of times I took them close to 10% SoC (which is as much as my inverter would let me) and noticed a 180-190mV imbalance with a 8A load; the...

Yes, but I got them on black friday at 20% discount :D

All in the off position, I haven’t changed anything via BT recently

Because I intended to use its 230V charger, which means I need an inverter (which needs a battery). Not sure if the proprietary connector would accept DC voltage from any solar charge controller (do they even exist that can provide 82V?) The land is 4-5 hectares.

Yes, I first bought the one from Amazon but then returned because it was becoming very hot at 50A. I ended up buying the Victron one which is much better