BLF Community Battery Pulls Overview Thread (Laptop packs and Tool Packs)

Batteries and Chargers Rechargeable Batteries
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I don’t see the Dell 60Wh Type T54FJ in your table. It contains 6 X LGABC21865 4.35 volt 2800mAH cells. Here is a link to a post on them: Which laptop battery pack yields the best, highest capacity 18650's - #51 by Ansarogu - Rechargeable Batteries - BudgetLightForum.com I’ve gotten a couple packs of these for free from work. I guess charging to 4.2V they will be 2500mAH to 2600mAH and I’m ok with that for free! It sure beats the Crapfires. They come from Dell 6420 - 6430 laptops.
lygte-info.dk has a review of them titled LG 18650 C2 2800mAh (Orange) I cannot get a link to that review to work here for anything.

- Joe

295

Toolpack
Milwaukee M12
Contained 3 Samsung INR18650-15M
Specs vary but it seems to be 1500mAh 23A?

2 good ones 1 dead

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I haven’t really been following this thread so sorry if this was posted before.

This guy made me giggle

297

Several pulls from the past few weeks

IBM 92P1073 9 Green SE US18650GR (2550 mAh)
Lenovo 121TS040C 6 Red SANYO UR18650 L31C (2600 mAh)
Lenovo Thinkpad 42T4911 6 Grey LGABB41865 K123E037AC (2600 mAh)
3 - Lenovo Thinkpad 42T4791 6 Red SANYO UR18650FM R1122 (2600 mAh)
2 - Lenovo Thinkpad 45N1001 6 Red w blue top SANYO UR18650FM R1122 (2600 mAh)
Dell type 6Y270 14.8V 2200mAh = 4 red KA6FJ25 046676 (??? mAh) + 2 Spacers (sticker says made in Japan)
*Dell type PC764 11.1V 56Wh = 6 pink Samsung ICR18650-26C (2600 mAh) (sticker says made in Korea assembled in China) I don’t recommend this battery pack due to the amount of roofing tar, super glue, gordian knots and adamantium involved in its construction.
Dell type PT434 11.1V 56Wh = 6 green SE US18650GR T 8A123QH22D (2550 mAh) (sticker says made in Korea assembled in China)
Dell type PT434 11.1V 56Wh = 6 pink Samsung ICR18650-26D (2600 mAh) (sticker says made in Japan)
Dell type T54FJ 6 Grey NCR18650 (2900 mAh)

EDIT: Added advertised mAh for the cells

298

JACKPOT…!!!

Ego 56v tool pack, = 42cells, Samsung 25Q
Ryobi 40v tool pack, = 20 Samsung 13Q

Well, I’ve tried to get into the recycle bin at my local Home depot to no avail, for months now. Every time into it, a employee questioned me and more or less stopped me from any further exploration of their bin…
This all changed last week.

HD moved the recycle bin to a out of the way, kind of out of sight location. So, last week was my first bin pick. No more questions from employee’s that now don’t see me dropping off my recycles and exploring whats in their bin…

Got a couple tool packs last week out of HD recycle bin. No good. All the cells were 18650, LG1100mAh, but had 1.1v or less. Tossed them all in my recycle ammo box after a wrestling match with the packs disassembly.

Yesterday morning got lucky. Got a Ryobi with 20 Samsung 13Q, all cells 3.1-3.3 volt.

Now for the Ego, a massive tool pack, chock full of 18650, got to be the recycler’s JACKPOT… 42 Samsung 25Q all cells 3.2-3.4v. Yes, I know they aren’t 30Q or Sanyo 3600mAh, but for free, not bad.
They seem to be hi drain cells. Power my highest amp lights as good as any of my best high quality batteries, says my trusty amp probe. And the ones I charged so far, charged up great, didn’t even get warm in the lii-500, and took a full charge.

Getting good at taking these tool packs apart, a slight art to it. They sure don’t make it easy.
Haven’t got them all charged up yet, but dang, more cells then I know what to do with,lol

This is getting fun, thanks BLF for showing me the light, to the recycle bin…

Going to start to get picky on what I take from the bin. What tool packs have the best cells…?

Oh, by the way, 56v does pack a nice wake up shock, wear gloves, be careful with the ego…

299

I found 3 ryobi 40v packs last week at home depot one person saw me bagging them up and walk away and said did he just steal those. I keep on walking. I always walk up with a bag with something in it so I can dig. And walk away with a bag of stuff if need be.even at best buy I turn my back between me and the bin fiddle with the bags then shine my phone light down in the rubber flaps and look around. Of I see something I grab it and walk and don’t turn or look back. What are they going to do to me? They still get their tax credit for participating in recycling its not determined by how much they return just that they are enrolled in it I use to work at Lowes. Its not stealing because its recycling bin. But store policy was if we say someone in the store actually stealing stuff we weren’t allowed to say anything to them or touch them in anyway but go to a manager. If you need a cover story to go into the bins. 1) my brother dropped off the wrong batteries he recycled my good ones not my dead ones.
2) I’m with the technology dept at (insert local community college) we use these to teach the students robotics building and skills. I was happy I found the packs but not so happy to find it only has 1300mah cells the smaller tool packs are the way to go. I just got into after a week. My boss helped me there was two tiny security screws I didn’t have a bit for. Lowest I had was a t 15 needed a t-10 so now this weekend I’ll test all 60 cells and see what’s worth keeping. If anything I have a lifetime of free vaping cells. Save my good bought cells for lights

300

generic hp pr06 replacement.
was doa.
battmon showed 6.7v and it did not rise after 7 hours.wear level 100%.
so the bms could not trickle them back.
cells were surprise! samsung icr18650-22fm.dated 2012
all at 2.35v
i set all 3 pairs into a tp4056 based homebrew charger all in parallel.
after 5 hours of trickle they went to 1a.
the cells are still like new.the bms had locked out.
an odd case where an aftermarket pack had good cells.
and the low voltage kept them fresh.
seller was good about the situation and promptly refunded the transaction and said to recycle the pack.
i did:-)

301

I got some pink Samsung ICR18650-26F’s from a used tool battery pack.

They charged upto ~2200mhA-ish (far from 2600mAh when new) in my XTAR VC2 (they were not hot at all when charging, at 0.5V)

Maybe it’s a wrong impression, but I found they ran my Convoy S3 (8x7135) a tad hotter than other 18650’s I have (Or I forgot how hot this light can get :smiley: )

Need to double-check that!

302

As internal resistance goes up, cell running temp goes up. The more cells are used (in the lifetime sense) the more resistance they develop.

So no mystery about running temp of cells. But maybe you were saying the leds are running with more power aka hotter?

303

If you live in Cannuckistan and you cant get your light to chooch Ave is you man!

304

Yes I mean the flashlight gets hotter to the touch, and quicker, even in medium mode. So yes, those cells are well used, I will not use them in the summer for sure :stuck_out_tongue:

305

that means these cells are better than your others.
measure your tailcap current.bet its higher.
this is a good thing.they are not well used they are better.

306

Will have to try that :slight_smile:

307

Hadn’t seen anything in weeks but then 2 in one day :slight_smile:

Lenovo Thinkpad 45N1001 6 Red w blue top SANYO UR18650FM R1122 (2600 mAh)
Xbox 360 controller battery pack with 2 NIMH Sanyo AA’s (2100 mAh)

308

WOW!!!
I didn’t even know that 7.5Ah EGO battery existed.

Would you mind posting your find in my thread? I started it when I first found a Ryobi 40V 2-1/2 years ago. At the time I thought THAT was unbelievable.
Look what I found in the recycle bin

You definitely have found the best all time battery as far as I am concerned!
That battery can be ordered at Home Depot and costs a lot of money.

309

Good seeing people doing sort of the same thing I’m doing…

I’ve had moderate success with taking apart some laptop batteries. I’m mostly buying cheap Chinese knockoff packs which actually aren’t as bad as you think. From my 4 different suppliers on ebay, every Chinese cell has managed to get me at least 2000mAh with a 1A draw. Lowest and cheapest cells which when I hit them on the ground, sound like they’re partially hollow and have another battery inside, achieve over 2000mAh no problem. So that’s kinda strange. Weigh in at 41g and my other suppliers weigh in at 45g which is on part to other brands. I’m actually in the process of using these to build an ebike. 91 cell 48V battery should let me stay under 2.5A per cell so I should have plenty of power and no crazy power draw or anything like that…

310

Hey Philaphlous, I have been wanting to make an extra battery pack for my 48v ebike. Just curious what method are you planning on using for putting the cells together? Im leaning towards carefully soldering them instead of using a spot welder. Theres a guy on youtube that uses a freeze spray to cool down the cell after soldering or spot welding. My battery pack I bought with my ebike kit has 52 cells but I bet 91 cells will get killer range.

311

I just picked up a 60w soldering iron. Tested it last night…gosh got it way too hot, apparently it has a temp controller, whops. The 60/40 solder was charring it was getting so hot. lol. I found someone on endless sphere that used 3.5mm solder wick as the main voltage lines for the cells so I’m going that route. I hope 10ft of that stuff is enough for 91 cells. I’m pulling either old laptop battery packs or new cheap Chinese packs out and spreading the brand name with the chinese cells to try and even out the voltage sag because I’m sure I’m going to get that. Hopefully I can keep each of the 13 banks balanced or else its going to take like days for my BMS to balance everything. lol…

I might chill my batteries before I solder them but I’ve read that thermal shock also degrades cells so I’m not sure yet. I have a 120mm computer fan to evac the soldering fumes…

It’s going to take forever to put it together but I think I have a great design. I’ll post my build on here once I have everything. Still 1-2 weeks out for my BMS. My battery isn’t the most robust and I’m going to have to keep my wattage under 800w draw. <3A per cell.

312

Ive read so many conflicting things on what degrades the cells I just feel like if I can get free cells from laptop pulls and get only 100 or even 50 cycles Id be happy just because I made it and it works. Of course, I dont want a fire either. I also came across an interesting video on youtube about not using a bms at all would be beneficial by using a balance charger here:

Im considering going this route but those balance chargers are kinda pricey.

Anyways, I have never tried going to home depot to check the recycling for batteries. I think I might try sometime this week.

313

I haven’t gone quite that far to check HD or any other place for old cells but I did pick up a few used laptop packs off ebay. Moderate success. LG cells get me about 2200-2400mAh while the other LG cells get only about 1400mAh and the Samsung cells were completely bad with only about 200mAh usable.
Yea its about $1.5/cell for the 2000mAh Chinese cells but they’re consistent in their voltage drops, capacity, and I know they haven’t seen either extreme loads or heat that could potentially damage the cells. I’m hoping that my commute won’t fully drain the battery pack as my charger is only a 2.5A 48V charger so that’ll take forever to recharge plus I hope to keep the discharge depth to a minimum. I’m in-between jobs right now and so once I nail down a new job I’ll go full steam ahead on this idea. I may be moving, may live closer to my work, may end up absolutely needing to bike to work with outrageous parking prices…who knows right now…