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

[BIGWOOD]

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.

@ReManG

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?

[ReManG]

@BIGWOOD

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.

@ReManG

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?

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.

[Boaz]

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

[Jubeldum]

@ReManG

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?

- YouTube

[myhken]

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

[ReManG]

@Jubeldum

@ReManG

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?

https://www.youtube.com/watch?v=3boy_tLWeqA

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…

[USSR]

Which laptop battery pack yields the best, highest capacity 18650's

I was wondering which laptop battery pack yields the best unprotected 18650’s, there is a recycle place close by where I can get a hold of a variety of used laptop battery packs for practically free, just want to know what to look for. Any tips?

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.

[Jubeldum]

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.

[USSR]

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.

[Dimbo_The_Blinky]

@ReManG

now I have to build an IT guy a flashlight to keep the packs coming…

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…

[downlinx]

i will get this thread updated tomorrow, thanks for the contribution

[Boaz]

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 "

[Jubeldum]

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

[alternety]

Do any packs contain a charging system (except Hoover)? It would be handy to just use some of the NOS packs as they are.

[dchomak]

@alternety

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.

[Jubeldum]

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

[Jubeldum]

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.

[18sixfifty]

@Jubeldum

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

The white tops are 2,000mAh if I’m not mistaken. At least that is what they would be new, probably less than that now. Maybe 1800 or so. Purple tops are higher mAh than the white tops and from what I have read are also supposed to be higher amps as well. Probably not the super high amp “purple tops” though. They do make a purple top 20amp battery but it also has a very different top altogether. It has a larger top with only four or five legs. It’s a newer cell and I wouldn’t expect to find it in older laptop batteries.

The purple tops that you found are good batteries and I would keep them, the white ones I might keep depending on how they tested. But with either of them you should fully charge them and then go back and check them again a day later. If they don’t stay at least mostly charged after a day then they are pretty beat up already. In fact cells that are really beat up will drop a bunch of volts overnight. If they do that then recycle them for sure.

[Jubeldum]

Dell
Type: PT434
Rating: 11.1V
Capacity: 56WH
Manufactured 2011.11

6 Red Sanyo cells with Blue tips

All 6 cells had 1.95 volts

UR18650FM R1122

This pack was a new old stock. I put them in my charger and they reached 3 volts in a few seconds and 3.7 volts in less than a minute.

I sure hope these cells aren’t damaged from being self discharged this low.

[USSR]

i bought two of these packs from a laptop dealer 1.5 USD for two battery packs.

one has samsung icr18650-28a .. it said cell made in korea assembled in china

5 samsung cells were 4.06 volts when battery pryed out.. they are in opus discharging now at 1 a .. 4 had 0volts

other pack has orange sanyo r1122 .. it said cell made in japan assembled in china

five sanyo cells are ok and test out to 2200mah at .5 A discharge.as it failed 1a test 4 had 0 volts.(three in parallel . one from a parrallel pack .

@Jubeldum

Is this of any help? “Computers, Monitors & Technology Solutions | Dell USA”:Computers, Monitors & Technology Solutions | Dell USA 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.