My 150ah cells are rated at wot 3000(?) cycles if memory serves.
So yes, as you point out, I can make the 150ah bank last 6000 cycles … but is that comparing apples with apples?
The first order cells are rated at 4000 cycles … this order 6000.
And THAT is comparing apples with apples. 
That is sort of my point. Marketing can get any number they like by setting the test conditions favourably. My own batteries are rated only 2000 cycles. 100% DoD, 1C discharge, EOL at 80%. Very hard to compare to the exact same cell, used by another manufacturer, who got 7000 cycles by using a C/10 rate 
1st Order, cells have arrived - did NOT see it coming, being a day early! YES!!!
Titbit:
Delivery people expected a forklift being 62 boxes thoroughly and securely wrapped on 2 pallets … or otherwise put, 755kg in 62 boxes.
Yes we have a forklift, I said … me pointing to my son and I … you’re looking at it. 
… got a good workout today …
Also very well packed …
… and a LOT of boxes …
Next order is now a go … want to see if we can time it with the same ship, as it goes:
CPT – > China – > Dbn – > CPT – > China …
… for delivery to SA ±1st week in Oct … assuming there are no unforeseen drama’s, that we can use the same ship … and IF we move quick.
If I may ask … spread the word, for all those DIY’ers out there, please?
Warning to @TheTerribleTriplet 's family and friends… if you think he is missing - check the garage!
He is there for the next “populate field with large random number” days.
Please notify local fire brigade in case of smoke…
Aaah yes. I also had a delivery truck show up on a Saturday morning with a big wooden crate weighting well over 100kg. And the driver asked me about a forklift, and I said: Does it look like I own a forklift?
We got that crate off by sliding it down an alluminium ladder. The ladder still has a dent in it…
Mmmm, I wonder why is everybody saying similar now that I have 124 cells at my house … 
So I was wondering …
Connect 6 x 18 cell banks to a busbar to my inverter - that takes care of 108 cells, right?
Have 16 left … make a 24v x 16 cell bank sommer just because it is left over … ja?
Come on … I know what you are thinking … Why NOT!?
Makes a LOT of sense!?
AND it is along the lines of that app “Eskom se Push”, no?
BUUUUT … then it dawned upon me … not gonna work … would probably maybe need another panel"tjie" or two … 
What do you think?
280ah 6kg vs 150ah 2.94kg …
Titbit:
To send 51 cells in 26 boxes 12.2kg 27x30x27cm from Cpt to Jhb costs R 3 063,95
16 cells cost R 958.69
Drop a spanner on those terminals and film the result. Please. You now you want to 
Use the 15mm. It’s not used for much else…
No … just NO … … … … I SO want to do it!
I once split the splastic from the wires on my RC LiPo battery to fit a new connector and without thinking cut both the + and - wires in one go.
Seeing what that small LiPo did to the knife I think the spanner stands no chance against a 280Ah beast
Absolutely none …
I imagine how the spanner start to instantly melt and the hot molten metal dripping onto the casing, melting a hole right through … and then the cell will have a runaway thermal reaction …
THAT would be an epic show!!!
Now where did I put the No 15 …
Right, first order is just complete … time for the 2nd one … who’s in?
The 16 would do as well. There are just some sizes that doesn’t seem to be used often. If you own a Japenese car, then of course it is 10, 12, 14, 17, and 22 for the wheel bearings. A 13 for some old battery terminals, and a 19 for the occasional bulky spark plug… but I never really see 15s or 16s. Of course a 14 is also a 9/16" and a 19 is a 3/4", so those double on older British and American vehicles…
Get a BMW, you’ll quickly find a way to use 15’s and 16’s
I used to have an old Honda motorcycle and it had M7 bolts. The heads still fit a 10 spanner/socket, so I initially thought they were M6 until I discovered than an M6 was too small and an M8 was too big. That had me scratching my head a bit so I took a sample to a local supplier and when I said it’s from a Honda he said something like ‘Oh, yes, the Japanese use uncommon sizes’ and then he rummaged around in the back and found me exactly what I needed.
Aaah I did that once. All I remember was it used a lot of Torx screws… After a while I stopped putting all of them back in, since they so frequently had to be removed…
I must say, me charging the cells in batches of 4, using a 12v MP 500VA to get the bulk charge done, then I connect the 4 cells in parallel, and finish off with the EV-Peak till it beeps, I’m seriously impressed so far.
Last step is to connect the entire 16/18 cells parallel, then top up once more with the EV-Peak, then let it rest and check all 16/18 volts for top balancing.
Anyone whom has a suggestion to do it better … please share?
To the top they stay inline … 0.009v between the 4 … my 150ah has NEVER been that close this high up on the SOC EVER!
I think, with the right BMS, the voltages and all that set with foresight, then this could become a very real option using Grade A Batch Matched cells used “lightly”, like @Phil.g00 suggestion on 17/18 cells in a bank:
Watched the video and its interesting but made me wonder if only charging to 75-80% will mess up the balancing of the cells as I thought lithium has to go to full charge voltage for balancing to happen.
