hp mu06 generic.
died after 1 cycle.
another recycle it and we send replacement.
twist.pop! crunch!
and we have 6 red yik lik 2200.
all at 3.95v
near 2300@1a
HP MU06 = 6 Green Samsung ICR18650-22FU (3.7V 2200mAh)
another m17x r3 pack.
original 90wh.
damaged by lightning.
took mobo,power supply,battery.
customer had me repair it and left the killed parts.
9 samsung 28a.lilac/light purple.
all like new.average so far 2580@1a 4.2v.
these are 4.35v cells.
lb1 “high performance”
replacement for alienware m17x r4.
came with machine when i got it so unsure of age.
would not give me anything with batteryinfoveiw.
and “high performance” is a joke.this is a 6600mah pack.
the stock is 8400.
the joke continues…
thermal sensor wadded up behind board not in contact with any cell.
brittle case that crumbled with no effort when i disassembled pack.
one drop would have meant big problems.
no tape anywhere on the cells.
plenty of opportunity for strapping to dig into cell sleeves and short.
and cause of death?
wire MISSING from a cell tap to board.
this pack was stillborn!
so add no qc to the list of ills.
the good?
9 dlg n18650 at shipping voltage.
i suspect they are as new.
all 9 at exactly 3.51v.
decent cells for most flashlights.
Found a few Makita 18V power packs - water damage or corrosion on several cells. Easy enough to disassemble but only 4 - 6 potentially useful cells, If those don’t pass testing then about all I’ll get from this “pull” is the dividers for cell storage and some insulator disks.
Dell PC764 = 6 Green Panasonic CGR18650EA (3.7V 2550mAh)
Found some old HP batterypacks in the electronics bin
the MU06XL battery used samsung ICR18650-28A
other HP pack, used some LG 2600mAh cells, LGDBB31865 - I3494F04127-NL154D7B3, which are charged according my LI-500 with 2475 mAh
Unknown use: bundle of 5 nimh AA’s 4 volt pack - individual cells appear to be Sanyo and test out at just under 1000 mAh 
Old thinkpad laptop battery with part # 92P1121 (4400 mAh) or 92P1125 (4800 mAh) 6 Samsung ICR18650 - all stone cold dead 
generic hp mu06 replacement from 2014.
controller burned up.
6 fp 1800 green.
2 at 0v so recycled.
4 remaining average 1830@1a
ir 70mohm.
another “5200mah” pack that is really 3600.
anyone know who fp is?
Another Thinkpad 92P1101 = 6 CGR18650D (Panasonic) cells were junk but salvaged insulator disks for future rewrap needs.
My dad approached me with a 5000mAh powerbank with a broken micro-USB charging port. I was happy to pull the two decent 18650's out until I measured they were at 1.45V. Double-checked with my AA NiMH to make sure the multimeter wasn't broken. I don't have any experience bringing dead cells back to life, so I've thrown both away...
hp mo06
blinking charge led meaning bad battery.
x out battery in windows.
6 grey panasonic ncr18650 at 3.96v/pr
testing now.
customer stated they were getting 3+ hours from it and had only used it to warning 2 times in the 6 months since they bought it from hp.
so likely a bms failure.and good cells.
2 cells tested.
2696 and 2698@1a
nearly new.
another doa mu06 replacement “5200mah”
6 red yle(yiklik) 2200.
all over 2300 and 60mohm.
still a lie but not as big a lie as others.
and these cells perform well at 3a in a s2+
seems to be a high % of doa with these packs.
but free cells!
i have yet to have a seller pay postage for return of the duds.
they know these packs have a high doa and its not worth the postage to get them back nor the time to test before shipping.
Nearly a year ago I got a replacement laptop battery pack for my old HP Probook, which must be maybe 8-10 years old. The old battery pack was lasting 20 minutes at best. The new pack died recently and was replaced under warranty with a very good one so I thought I don’t need the old original pack as a backup any more, time to strip it. I thought if I am lucky only 1 or 2 cells will be dead, and maybe I will get 2-4 viable 18650’s for use in low powered lights.
I was amazed when I pulled out 6 grey LG cells and tested them on my Lii500, all were within about 5% of 2000mAh, and all were sitting at about 4.05V after at least 6 months unused. They all have no problem running a Convoy s2+ 8x7135 on high, It must have been the circuitry that was faulty.
I will test them all individually for runtime, but such positive results make me want to hunt down more old laptops and then I will need more devices to put them in, and more chargers, and cases, and then I may need to save up for a divorce……
You guys know how it goes.
yes you are already too far down the rabbit hole to turn back.
and it is surprising how many useful cells lurk in “bad” laptop packs.
enough that folks build powerwalls with them.
Just a quick question - I have salvaged 18 ncr18650’s from a bosch drill pack (less than a year old), I noticed 1 cell with brown leaking down the side so I disposed of that one and I’m hoping someone binned a perfectly good pack because of 1 bad cell…
So I have kinda cut/snapped off all the little welded tags, but the cells are a bit rough/spikey sharp on the ends now where the contact welds were and some still have bits of bent tag, what do you guys do to remedy this? flatten them off I mean, a dremel maybe?
Thanks in advance 
I just grab them with pliers and twist them off. Works pretty good.
Pulled some US18650GR (Sony) from a laptop battery pack. 8 cells, 6 were dead (0V), the other 2 were ~2.0V 
But I put those 2 in my Xtar VC2 and they charged (~2500mAh).
I’m back from a little hiatus…. My laptop pulls have been working great! My 91 cell ebike battery has held up quite well and right now it just sitting on my desk in our apartment office….little risky but shouldn’t be…lol I think my bms limits the current draw to 30amps on my ebike because even if I jam the throttle down itll only pull around 1300-1500w which is about 30amps. I took a nasty and very stupid fall on my bike one morning and that made me put the bike away till next year. Lol anyway
I’m back at it! Just ordered 2 more laptop batteries. Apparently theyre genuine laptop batteries but I’m a tad skeptical for good reasons. I think they’re either 9 or 12 cell batteries. I’m planning on making a 7S 19.5v laptop power supply for my Dell xps. I’ve confirmed my cc cv buck converter should handle the power load for the laptop so I’m quite excited about this project! Will keep you guys updated when I get the laptop batteries.