Those very much look like Sanyo UR18650ZT's
Hi I extracted some cells from a Dell battery. Pleaseehelp me identify them.
Also from another battery got Samsung 18650 - 26d Sdi cell is it 4.2 or 4.3 volts cell?
So is there a trick to getting to rummage around in a recycling bin for these batteries? I have been nearly run out of two Home Depots and Best Buy looked at me like I had a second head growing out of my neck… They even had a “why would you want to drink the toilet water?” look about them when I asked at that Best Buy to look through the recycle container for the batteries. I have been polite and extremely neutral when they say it is “for my safety” that they cannot let me do this, but what kind of techniques have worked for others here?
Do you know someone that works for a company that has an in-house IT department?
That's where I get mine, 40-50 packs per year. We have over 600 employees at my office and zero desktop computers. 70% of them bring them home each night or offsite to clients everyday so lots of wear on the batteries.
That is a good source…Thanks. I do not know anyone off hand that works for a company that has that, but will keep my ears open.
If you are in a high traffic area like a college you can make your own recycling box like they have at the home depots.
Or you could just steal a couple of those cardboard home depot recycling boxes....and recycle them by dropping off a new box (empty) and taking the old box (full) .
" What are you doing ?? "......
"just picking up the recycling ..here's your new box" .:P
if the push you just say green stuff like " Give a hoot ..Don't pollute " or .. quote Al Gore
What type is this battery, from a old Dell laptop (2005). I had two battery packs to the laptop, and the first one was 6 x US18650GR (Sony 2550 mAh). They have been in the Opus BT-C3100 with a charge test (charge - discharge - charge) and at 1A, they gave me a result of around 2500MaH (2480-2540) So it’s seems they work just fine.
The second battery pack had 6 x dark red batteries with a green rim at the top. They are only marked with a large D and then J18A. There are also a serial number on them (was sure that was the name of the battery, but soon discovered that the number was different on every cell.
Just started a charge test with them.
Is this type of batteries worth saving, or are new batteries better?
J18A
JD6FK17
108243
Ha, you got the reference… Nice clip.
I took the advice and found someone that knows an IT guy. First pack was an old dell battery with six Samsung ICR18650-26FU… NICE… All were above 2.2V so I am checking them on the D4 now…
Sincerely appreciate the help, now I have to build an IT guy a flashlight to keep the packs coming…
so if you are in a battery junk yard use this way to find capacity of individual cell without having to google it.
to get a maximum mah rating battery look for a battery bank that has highest wh ratings.
an individual cell having WH rating above 9.5 means it at least is 2500mAH.
i hope somone good at andorid programing would code a little utility for this purpose ... dang i never worked with visual programing. all were console based.
Is this of any help?
http://www.dell.com/downloads/global/corporate/environ/comply/msds_doc_part_num_portables.pdf
I bought a pack on Ebay and tore it down today.
Dell Type 4M529
Rating 11.1v
Capacity 90Wh
Made on 2013/01
9 Samsung ICR18650-28A all had 3.78 volts. 
i bought below batteries (6 dell 58wh.. and 1 samsung 66wh.. 3 another dell of 58wh)
http://i.imgur.com/70SqelK.jpg
samsung 18650-30a sdi 2A12
behind the wrapper it reads G10A
1B1B1
samsung battery : AA-PL1VC6B
11.1 volts 66Wh
yielded below 6 cells each reads 1.6 volts.
the pcb of this battery was ok . no sign of damange or burn.
three batteries are on low current charge (300ma) for half an hour.. my charger is 4.2 volts and i think i wont be getting too much benefit from it.
http://i.imgur.com/ajWNLDk.jpg
edit: all charged nicely to 4.17 volts as i do not have 4.3 volts charger.
Making new Friends and building new Flashlights is the “Intangible Benefit” of recycling laptop packs. That’s what I think, anyway. Be sure to remind him/her to get a good charger…
i will get this thread updated tomorrow, thanks for the contribution
The real trick is New, Oem , Unused Packs w/ japanese or korean cells inside .
Use packs are really hit or miss . they are fun to play with but the yield will generally be about 20% ~30% of cells worth keeping.
once you go new unused packs you'll never go back ...ok every once in a while that recycling box will call your name . But at least then when the manger asks you "what the hell do you think you're doing ?"
You can look him in the eye and just say ....." It was talkin to me "
Dell
Type: J1KND
Rating: 11.1V
Capacity: 48WH
Manufactured 2011.06
6 Red Sanyo cells with Purple tips
All 6 cells had 3.98 volts
UR18650A R1112
EDIT:
Added UR18650A R1112
Do any packs contain a charging system (except Hoover)? It would be handy to just use some of the NOS packs as they are.
I found this pack in the recycle bin. 21.6V (25.2V fully charged) 1500mAh
It’s just 6 cells connected in series with at temperature monitoring sensor. No balancing circuits or low voltage cutoff
The cells tested out close to rated capacity at a 1A draw I should test them at 6A or so.
Dell
Type: J1KND
Rating: 11.1V
Capacity: 48WH
Manufactured 2011.12
6 Red Sanyo cells with White tips
All 6 cells had 3.62 volts
UR18650A R2112
I think it’s safe to say that when it comes to Sanyo cells, we can no longer go by the color around the positive tip to know what mah it is.
I have two Dell packs with the identical model and specs with Sanyo cells with different colored tips.
https://budgetlightforum.com/t/-/27671?page=7#comment-791916 Post #215
Dell
Type: J1KND
Rating: 11.1V
Capacity: 48WH
Manufactured 2011.06
6 Red Sanyo cells with Purple tips
All 6 cells had 3.98 volts
UR18650A R1112
I guess I’ll have to just buy a Opus BT-C3100 v2.2 but I’m afraid a week after receiving it, the Opus BT-C3100 v2.5 will be released.
Someone needs to make a charger like the Opus BT-C3100 but in a 8 bay version like the NiteCorn All-80.
