Beginners Guide to Processing 18650 Cells | Cell Database


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IFR 26650 Powerbank
#1
A productive weekend.
I found this form, introduced myself and managed to strip down 10 more power packs to harvest useable cells.
+/- 450 Cells and counting  Cool (all need to be cycled/charged)



introducing the powerpacks:
54,4V used in PPE equipment
34 cells A123 26650 in each pack
I dont have the BMS for these packs and the are 54,4 V.
I have a 12V system in my house so I will brake down these packs check the cells and make custom packs.
http://lygte-info.dk/review/batteries201...%20UK.html


 

How I harvest my Cells:

Starting with removing the soft heatsink check what the Voltage is if any good I start with stripping.



Cutting all the wires from the old BMS



I don't know how you guys remove spot welded strips.
I use a sharp chisel to lift a corner and peel them off with pliers while guiding the strip to prevent Sparks... Angel



same procedure on the other side.

Then the "fun part" taking all cells apart.
They are glued together so most of the heat shrink peals off. (I ordered new shrinks since the positive side is on the outside...)



Stripping them takes me 20 Min each for the standard ones.

Unfortunately I also found that a lot of packs are "dead" 0 Volts.
Also on the cells. 
I'm not sure if I can "bring them back" So I stripped 2 down for testing later on.

For now I'm focused on stripping working packs that still give 50ish V.
These packs are replaced after 2 years of use or when they don't work any more.

I must have been lucky with the first packs because they where all good 50ish V 


And all others are unknown...




I also have some sealed packs that are cracked they take over a hour to strip and they only have 17 cells..
But these are all from a new model from 2016, So all new cells Big Grin

 

Thats it for now. i'm waiting to get new heat shrink and plastic cell holders in.

I'm not sure about the pack size's I want to build.
First I will use the packs in my offgrid house and in my T3 camoperVan.

I'm also thinking about a EV conversion of my T3 campervan so I might want to create a pack with 12V i can use in house and place together 300ish Volt in the car..
hbpowerwall and BlueSwordM like 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


#2
On the moment I'm waiting to get some Opus chargers.
I tryout the Xstar VC2 plus master
http://lygte-info.dk/review/Review%20Cha...%20UK.html

to find out it's not supporting the cells I want to charge IFR 26650

What about the Opus charger do they support LiFePO4? 3,3 V
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
#3
There is internal switch on the Opus. Not sure if it was for HiV or LiFe at 3.2V

They do not support 26650 very well. I know it says 26650 but the ones i have doesnt give any contact out from default

http://lygte-info.dk/review/Review%20Cha...%20UK.html
Follow me! >> YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 83kWh LiFePo4 | 10kWh 14s 18650 |  66*260W Poly
Upcomming: 14S 18650~30kWh | Automatic trip breakers, and alot more
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#4
The review says that the button function was not tested, thats why it says maybe.
So there is only one way to find out.. lets see when the arrive here.
I order 8 of them now for 10 US each..

http://www.ebay.com/itm/New-EU-PLUG-Opus...SwrfVZOT~p
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
#5
Maybe you should check that ebay listing for authenticity. The seller is in Shenzhen, China and the price is very, very cheap ( USD $9.99 inc shipping). Lowest price I can recall is around USD $30 from Aliexpress.
Korishan likes this post
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#6
Yep, there were others who got burned by false sales. If the opus is less than $20, it starts to be questionable.

The other 3 bidders had to file for refunds with ebay.
Proceed with caution. Knowledge is Power! Literally! Cool 
Knowledge is Power; Absolute Knowledge is Absolutely Shocking!
Dollar Shave Club. Best Razor I've ever used
Certified 18650 Cell Reclamation Technician
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#7
Thanks for the warning.
I ordered from 3 different suppliers for 10us..
I can always refund if they don't deliver . long I've PayPal 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
#8
I also bought an opus for 15 € from another seller. The part has never arrived and the seller was deleted from Ebay. For $ 10 it's a fake. I would cancel the purchase!!!
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#9
Tried two for 10-15$ too few months ago and had to ask Paypal for money back, they are a lot of scams with Opus chargers recently.
Current setup: 21x 215wc poly, 7.5kWh 7s 18650, PIP 2424msxe.
Reply
#10
Yeah. Opus is between 30-35USD. All at or around 10 USD are fake.
Follow me! >> YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 83kWh LiFePo4 | 10kWh 14s 18650 |  66*260W Poly
Upcomming: 14S 18650~30kWh | Automatic trip breakers, and alot more
Reply


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