Beginners Guide to Processing 18650 Cells | Cell Database


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IFR 26650 Powerbank
#11
Hello guys,
Thanks for the warnings.
What is the point of having fake add's when there is eBay buyer protection/paypal?

like this guy also selling OPUS for 10us based in US sells from honking..: http://www.ebay.com/usr/ksafowler848?_tr...7675.l2559

Where would you guys advice me to buy OPUS chargers?
Greetz Dennis

http://www.verticallife.nl

Current Of-grit setup
5 230Wp canadian Solar panels
2 Voltmaster 270Ah 12V Battery's
1 Outback flexmax80
1 Phoenix 3000 inverter
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#12
I bought mine in GearBest 

These days it costs 26.42€
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#13
Buy a Foxnovo the parts cost about 23 € is in Dollar 26,37$

Edit: In Germany Ebay
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#14
(07-12-2017, 05:37 PM)Dennis Van Hoek Wrote: Hello guys,
Thanks for the warnings.
What is the point of having fake add's when there is eBay buyer protection/paypal?

like this guy also selling OPUS for 10us based in US sells from honking..: http://www.ebay.com/usr/ksafowler848?_tr...7675.l2559

Where would you guys advice me to buy OPUS chargers?

Maybe they hope you don't put a claim for only 10$ and can keep the money of some transactions ?

Nkon.nl as you'r dutch, 100% legit products, good price and it's in your country.
Current setup: 21x 215wc poly, 7.5kWh 7s 18650, PIP 2424msxe.
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#15
Thanks all for advice. I also ordered 4 opus chargers from gear best.
let's see what happend with the ebay ones..
If they Arrive all good if not well I just get my 10 dollars back Big Grin
Greetz Dennis

http://www.verticallife.nl

Current Of-grit setup
5 230Wp canadian Solar panels
2 Voltmaster 270Ah 12V Battery's
1 Outback flexmax80
1 Phoenix 3000 inverter
Reply
#16
After some Custom problems Dodgy  (48€ taxes, 11 € administration 4 € taxes for administration...
Finally 4 Opus chargers arrived ( the others 6 from Ebay for 10$ each are "on there way"...)



First thing to do is set them up to charge my 26650 cell's
The Opus has a hardware function to set them to charge with max 3.7V for my LiFePo4 cells.

 

And it seems to work really well.
Even the "0" volt battery's come back alive after a full cycle  Cool 

I don't know if they are much different from the 18650 but I have battery packs that I brake down with all good cells 3.3ish V or dead cells with 0 volt. But these 0 volt ones seem to be in sort of a "safety mode" and come back alive . 
Atleast the ones I have tested now. 

And I can only test a few since the 26650 size fits in the opus.. 2 or 3ish at the time

 

So I have to make some external bracket or something to speed up the process.

Also my new 200W soldering iron from China came in.
it's slightly bigger than expected.. But I might get a spot welder to Angry  (Your fault Daniel.. Wink )



 

thats it for now. let the cyling begin!   Tongue
Greetz Dennis

http://www.verticallife.nl

Current Of-grit setup
5 230Wp canadian Solar panels
2 Voltmaster 270Ah 12V Battery's
1 Outback flexmax80
1 Phoenix 3000 inverter
Reply
#17
I bought a 300 watt, can hardly hang on to it.
im either going to buy a 100w or spotwelder.
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#18
Dennis, if you order from China you have to keep in mind that anything above 22€ gets VAT (BTW) added and risks import taxes as well.
Simple solution, order 4 separate chargers, so each unit has a low value. The Opus chargers I got from GearBest had around 12,5$ value advertised on the package, which keeps you out of problems.

Better even, if you have problems with customs because they say your Opus is worth more than 12,5$, you can point them to those fake ebay ads where they're only 10$ ;-)
I've had to ask for a refund as well on one of those listings...

Good luck on the testing!
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#19
Last week my new Heat shrink arrived.
I'm still waiting on the ebay 10$ bay chargers....

I guess I will order more chargers from GearBest piece by piece.
When I open my packs most of the heat shrink comes off Sad .
So after the charge cycle tests I wrap the blank ones with the  "apple green" heat-shrink.
 


I think I will get some Orange when I run out (20 meters in stock now)

I'm still not sure what size of packs I want to make.
For now its 4 x 9 26650 cells. (i'm using 3 hole plastic cell holders)



loads of cell to go since I can only place 2 cell's in on charger.
My soldering Iron has problems soldering the positive side of these cell's.
I might get some more/aggressive  flux...

Korishan likes this post
Greetz Dennis

http://www.verticallife.nl

Current Of-grit setup
5 230Wp canadian Solar panels
2 Voltmaster 270Ah 12V Battery's
1 Outback flexmax80
1 Phoenix 3000 inverter
Reply
#20
I bought a cheap (35$) 80w chines soldering iron, and its plenty hot enough..adjustable on the handle to 500c
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