PINNED - Lithium battery conversion/info

[terry2]

Here... https://uk.banggood.com/Revolectrix-Cel ... rehouse=CN

But I think Terry wants cheap and cheerful.

Steve

Wrong again Steve.
That's 5 times now

I have one from there on back order(so has another person here).
They don't know when they will have stock.

And Revolectrix don't know when they will be selling them again.
It has been nearly a year since you could buy new PL8s

[terry2]

I just canceled my order for a PL8 with banggood as the date now says Dec 6th.

The date seams to switch very often.

[Burgerman]

They do seem a bit scarce. Not even any used ones about.

[terry2]

They do seem a bit scarce. Not even any used ones about.

It will be a year next month since they had PL8s for sale.

They keep saying it's because of the chinese virus, but we know that's BS.

[Burgerman]

Actually its probably a mix of things. The first being that the bulk of sales is in the northern hemisphere. And sales over winter drop to almost nothing when no flying going on. So hey run stock down to zero and dont reorder anything till spring. Dead money costs! When spring came so did the virus. Every damned thing I order is out of stock. So maybe some truth.

[terry2]

Actually its probably a mix of things. The first being that the bulk of sales is in the northern hemisphere. And sales over winter drop to almost nothing when no flying going on. So hey run stock down to zero and dont reorder anything till spring. Dead money costs! When spring came so did the virus. Every damned thing I order is out of stock. So maybe some truth.

They didn't make any after (approx) july last year.
Then They sold all there stock + all the refurbs.
They ran out way before the virus hit.


So they either are trying to push people to the NFC type of charger, or they're going to replace it.
I can see no shortage of any electrical component coming out of china.

[Burgerman]

They wouldnt start reordering and remanufacturing befor spring. So I doubt thats the case. Its still by far the most capable of any of the chargers they sell. They sell less of them, because most people want the cheaper dumbed down ones with no PC softwre.

[terry2]

My cells are nearly @3.0V so I think it's time to charge them back up.

Need some help with the option in the PL8 software as I have forgot what my old PL8 settings was before it died.

I have a 2400W power supply wich is 100amp.

I want to charge them slow, not full speed as I did last time....to much heat from the wires.

So what should I put in the settings for a slow charge?

Thanks in advance.

Looking at the preset tab, it's set to 30amp...can I change that to 20amp to slow things down?

[Burgerman]

Yes. Why? I charge at 40A all the time.

[terry2]

Yes. Why? I charge at 40A all the time.

At 30amps those red/black wires are to hot for my liking.

[Burgerman]

They are silicone. They are silicone for a reason. So they can be small and not burn up or damage the insulation at higher currents. Its not a problem.

Silicone wires were used in the hobby world because our tiny helicopter and plane electric motors take much power!
The 12 guage silicone wire is often used at over 100A without problem.

Lookup 12 awg here: They say 70A. Thats actually conservative. Does it get hot? Yep! Its designed to. Thats why they use non melting silicone.

[shirley_hkg]

Yes Terry. You can.

I charge at lower rate even. I spread the charge across the whole night.

[shirley_hkg]

Hi folks , someone has posted a link to a site that can work out the most even combination of cell capacity in building battery pack.

Just recently , but lost track of it. Any clue ?

[Burgerman]

You can charge slower too. But at say 20A it takes 10 full hours to charge a 200Ah pack plus balance and say half hour at CV. So maybe 12 hours to charge if heavily discharged.

So 30A cuts a third off that time. So a sensible 8 hour overnight.

And 40A cuts it in half compared to 20A. So 6 hours?

You need to remember that we are not putting a few Ah back. Like a lead chair. So charging at low amps is like charging a lead chair with a small 3 or 5A charger.

[terry2]

Yes Terry. You can.

I charge at lower rate even. I spread the charge across the whole night.

Thanks.

I am getting a error safety code 34 bad cell count.

WTF is that?

Loaded the wrong profile

[terry2]

My mins is not working at the moment.

I have put back so far 164147 mAh is that about 160 amps put back in?

[steves1977uk]

Yes, it's about 164.15Ah Terry.

Steve

[terry2]

Yes, it's about 164.15Ah Terry.

Steve

Thank you very much Steve

[expresso]

https://hhpower.en.alibaba.com/?spm=a27 ... 3e5fKm7nyH

just received my new cells - so far look packed very well - each box should have 3 200ah cells - looks way over stuffed - thats good

[expresso]

they look good - and fit in the stock battery tray - with room to spare on the sides -

[expresso]

pack very well not a scratch or dent on any of them - will start testing for Cap tomorrow

will charge fully - then discharge to 2.9v and recharge - they all tested 3.3v

[Burgerman]

Your link doesent go to any battery/cell but is generic. Did you mean these? https://www.alibaba.com/product-detail/ ... 2645BUbYCE

[expresso]

yes thats the company - and the Cell - they were packed very well - each cell totally covered padded - box on the bottom sides top

3 cells in a box - you could have fitted 6 of them if not packed well - so i am happy for that - will start testing for Cap. will take a while with these huge Cells -

[sacharlie]

Your link doesent go to any battery/cell but is generic. Did you mean these? https://www.alibaba.com/product-detail/ ... 2645BUbYCE

WOW thats just $135/kWh
How much was shipping?

[expresso]

in my case - i had a better deal because when i found the item - it was free shipping - but after working out the deal i got 9 Cells - one for spare - it was $100 shipping - but that changed during the time i was doing it - they still kept it for my order

this will take a while to charge discharge and recharge - still charging my first one - will let it discharge overnight - and hopefully recharge tomorrow - start on Cell 2 - hoping i get at least 190ah out of it - we see

[expresso]

if someone wants to take a chance i found some cells for 600 shipped 8 cells 200ah - but hard to get details on them

Varicore - search on aliexpress i am happy with mines - packing - no dents etc, they look pretty new - was told they are new - but we know how that goes - still these are the best so far for me - and easy to work with - no problems messaging back and forth -

[expresso]

i wonder if they made these cells just a bit wider - to fill my battery tray - lets say 65mm thick instead of 55mm - and keep the rest the same

maybe room to fit more Ah in each cell - 250ah ? as you can see - i have room on the sides

[Burgerman]

I think 200Ah is adequate!

[expresso]

yes it is - i havnt used that much even on the 68 mile run - thats with a fast chair - using more battery all the time -

on a slower chair may get even more range out of it - -

[terry2]

I had my eye on some EVE 280ah cells for about 4 cells are $480+shipping $90

They are now a really stupid price £1,200 for 8 + £200 shipping. Then you have the new import tax.

And the PL8 V2 has been put back to the end of march.
But there is no point in importing them now to the UK.