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

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IBM branded 92P1011/1062 (10.8v 4400mAh) --> 6x Sony SF US18650GR
Lenovo branded 42T5229/5230 (10.8/14.4v 5200mAh) --> 7x Sanyo UR18650FM
IBM branded 08K8193/92P1064 (10.8v 4400mAh) --> 6x unmarked Sanyo UR18650FJ

I noticed in your album link that you are “jump starting” cells that are sitting at voltages too low to charge with your i4.

While that may work to get them to charge, these are NOT like Ni-MH or NiCads and this is NOT a good idea. All that energy that those over discharged cells accept could suddenly and catastrophically be released in a very short time (fire). At the very least, I am sure you have already noticed that those “jump started” cells have a high self discharge rate. That alone make them of no use, and if they self discharge in a short period of time you have a problem. You should safely discharge those cells and recycle them ASAP.
Besides, you now have many cells and can “afford” to be selective on which ones you keep. As a rule of thumb, any cell discharged to below around 2.5V is irreversibly damaged and should be recycled.

thanks great info in here

Will take that into account; I've had SOME luck with quality cells, but I don't want to push it.

I opened my 1st laptop battery pack last week, was from my 6yr old abused Dell Inspiron 6400, the battery failed to hold more than 2mins charge around 4yrs ago and has been used from the mains daily with battery attached for last 4yrs.

Inside were 6 x pink samsung ICR18560-26C, all voltages were 3.4v-3.8v, charged them to just under 4.20v and 5 days later they are all around 4.10-4.15v.

Sorry but I forgot to note down the exact battery part before I trashed the plastic casing, I do have some packs coming my way though so will record the details for the thread.

Thanks guys, I have been really busy lately and will get things updated soon.

Dewalt 4.0 Ah 18 V packs contain 10 pieces of Samsung 20R batteries (green color) 2000mAh.

I've ordered 10 of those & will update when they arrive, relisted here: http://www.ebay.com/itm/141355585144

That's the same seller that had another batch of different ones a while back, can't remember if they were the Panasonic 2900s or Samsung 28As...

The white ones were Samsung –28A cells.

Also, a Dell PT434 battery comes apart fairly easily. Had one for my ‘gaming’ [it will run WoT on low graphics, and RCT3 @ max cleanly] laptop that wouldn’t hold a charge, popped it apart and the six 2550mA USGR’s inside tested between 3.7 and 3.8v.

Playing battery roulette at the flea market...

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Sony branded VGP-BPS5A (7.4v 7800mAh) --> 6x Sanyo UR18650FM (All dead; 0.05-0.06v)
Dell branded TC030 (11.1v 85Wh) --> 9x LG LGDB118650 (3x 0.00v 6x 4.12v)

Will heed dchomak's warning and not push my luck :P

HP MU06 notebook battery for CQ42 / CQ62 / CQ72 / G62 / DM4-1000

HP P/N: 593562-001

6 cell 11.1v 62wh 5225mah

Samsung ICR18650-28A

Thanks for doing this! It’s a huge help.

26F/26C and 28A have about the same capacity when both are charged to 4.2v, is there any data on whether the 28A will have a longer service life than 26F/C when used under the same conditions?

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Lenovo branded 42T4690 (11.1v 3900mAh 44Wh) --> 6x Panasonic Prismatic CGA103450A @ 1950mAh (1x 0.00v 2x 2.2v 1x 2.6v 2x 2.7v)

These, according to the series name in this datasheet, are LiCo cells, which might make me look like an idiot for doing this.
some info from Keeppower about these

I got some of these from a Toshiba laptop about a month ago.

Any circa 2011+ ultrabook will most likely carry cells like these in their packs. Too bad there's no host to accommodate them :P

I am still working on getting you guys updated in the spread sheet. Some have been updated and will try to get the rest tomorrow and tonight

A Li-ion powered [pistol grip] spotlight? Dremel-out the peaks in a SRK battery tube and put a coupleafew of those in? A test-bench for driver and LED tuning?

Thanks, I’ve never seen those before. Interesting alternative to the pouch-cells that Apple seems to have switched over to.

What is the problem charging them in that charger? The datasheet lists 3.7V nominal, 4.2 charge termination.

Would the thread be somehow less informative if the updates were placed in the first post instead of the second?