Laptop Battery – Acer 5200mah
http://www.ebay.com/itm/Acer-Battery-6-cell-5200mAh-BT-00607-074-NEW-OEM-751h-1196-751h-1211-751h-1259-/141311126851?pt=Laptop_Batteries&hash=item20e6ccad43

18650 Battery
6* Samsung ICR18650-26C 2600mah

Tool packs too in this thread or just laptop?

For what it is worth, the packs in the batteries for pre-unibody MacBook Pros are LiPo pouches. No pix, I took them to household hazmat long ago.

Toshiba Libretto PA3442U-1BRS P000435740 3400mAH laptop battery yields 18500s which are not very common in packs, but they are unique and useful.

Would be nice to find a good source that was as cheap as the ones that started this thread.

Current price is $17, not bad – but cells in the last pack I received were marginally low on voltage.

from Ubehebe’s post.

!!

downlinx wrote:

Opened a few more laptop batteries this weekend. 6 x Samsung @ 2600Mah(if anyone has information on the 26C please send it to me)

Sony has an outstanding white paper for their older Graphite (US18650GR) cells. Not found anything for Pana and Samsung cells.

My i4 is doing initial charge on my NOS Samsung ICR18650-26C laptop pulls. Will switch to iCharger 106b for capacity and IR readings to compare later in the week.

The GJ114AA battery for the HP HDX 9000 has 9× 2550 mAh Sony US18650GR Batteries. Nice finds at the right price!

Nice thread..

But at the same time, it would be really nice if the top of this thread would have a table with the important info, and maybe a link to the actual post in the thread..this can otherwise become a difficult to navigate thread.

Something like this:

Manufacturer, code battery pack, rating battery pack, cell names inside, cells mAh.

Go know it's a lot of work!! But once it's done, it's pretty convenient.

I would actually order all packs by Brand name.

Dell with Dell, HP with HP etc.

So it's easy to search.

I want to join, so I just ordered a pack of Amazon Japan.. I think it's new.the laptop that it is used for is already pretty old, so it might be old stock.

Too many cheap No Name brands that I don't want to order..who knows what's inside.

Pulled

New battery pack (probably old stock, because the laptop this one is used in, entered the market a long time ago)

R1122

pretty low voltage.. the charger didnt want to charge them, so I used my crappy Xtart WP2 (which over charged a few cells)... and it took the cells without hesitation.. after about 10 seconds charging, I whopped them in the Opus, and it charged just fine.

I don`t believe they are bad.. as I think they just got so low from being in stock for a long time..

I am charging them now.

internal resistance... the 4th cell is high..THis was done BEFORE charging.

so I changed the 3rd and 4th cell.. and guess what?

and then I changed cell 1 and 2

I hope I will do it again after the charge, maybe they will have a lower resistance again?? not sure

 I`m pretty sure these are 2600... even just looking at the specs. 5200 at 7.2V, and only 4 cells... those must be 2600.

Oh, and the pack was $10..(the seller has more packs, should I buy more?

was that worth it? I hope it was.. but I`m a little bit new to laptop pulls... only done a few Used ones in the past.. and think they were worthless.

hopefully these are okay.

edit: results of discharge

All cells have a resistance value of around 90

Sorry no picture but they are light blue.

ChibiM wrote:

Oh, and the pack was $10..(the seller has more packs, should I buy more?

was that worth it? I hope it was.. but I`m a little bit new to laptop pulls… only done a few Used ones in the past.. and think they were worthless.

hopefully these are okay.

I found my NOS packs running 2 to 2.5 volts after sitting around unused for 4 to 6 years or so. I believe most are sent out sitting at storage voltage, but so far, every thing has charged up just fine and test pretty much at rated capacity. I would not waste time with used laptop pulls.

I have the XTAR usb travel charger which seems pretty good. Mine charges to 4.23xx on average which is in the rated +(-) .05 range. This should be from 4.15 to 4.25 if my math is right. What Voltage was your cells terminating?

My first charger from Amazon was a “smart” charger that normally charged to 4.4xx if you did not monitor them!

My iCharger is reporting all my cells with IR around 112 to 118 near or at full charge. This is two wire, not the better 4 wire readings but just a reference to me.

A few of mine came off my xtar wp2 at 4,55v.. crazy high.

The "New" sanyo ones I got are at 2400-2500mAh and resistance all around 90 , after charger, and discharge test.

Are they still worth getting?

I know the packs are new, but older stock. But not sure if they are still consideeed good..anyone??

I can buy them for $10 a pack, with 4 cells inside. Pack was really easy to open.

Still worth to get?

I would send that back to xtar.

I have another Samsung pack in the mail so test each and every one through several cycles over time. No leaks, failures and maintains voltage. What I don’t have are any fresh new cells to test against but plan on investing in high current Sony cells down the road.

My very fist pack from last year: Pack 1, Sony 2150mAh, May 25, 2004 date code. Every cell holds 4.2- 4.1 after days rest and capacity fine through hobby charger. I won’t toss these!

Cheers

Edit:

Sony date codes from around the forum:

on Sony lithium ion cells look at the first two digits in the second row.
8A = 2600mAh
G7= 2400mAh
G6, 6A, 6B= 2200mAh
G5= 2150mAh
G4= 1950mAh
The last 5 digits of that row tell the manufacturing date.
digit 1: year. Q=2008, R=2009, S=2010 and so on
digit 2: month. A=Jan, B=Feb, …J= Oct
digit 3+4: day
digit 5: electrode history
so the cell on the photo was produced on Oct 29, 2008 (QJ29)

downlinx wrote:

1)Laptop Battery
Dell 6T473

18650 Battery
12x Sanyo Double red 18650 @ 2200Mah

Sure would extra mAh be nice…but if you can get em dirt cheap go for it!

The ones with the blue ring around the + connector are 2600mAh and work just as well

Just an update, this is the result of the discharge..of the red Sanyo cells.

call those keepers, no?

Yes, I think they seem to be pretty good..like New. So I'll keep them.