Well with my limited experience I’ve noticed about half the packs I come across are rated at 11.1 volts. Mostly newer stuff though like netbooks etc. Anyways good to know there isn’t much difference.
I've considered like edcplus that the best use of those batteries is probably left as an already built pack ...tearing them apart makes sense if you NEED batteries which clearly not many of us do ..An assembled tough pack is starting to make much much more sense ,Maybe a dedicated bike light with a battery pack that snaps in under your seat .
When tearing these packs apart it gives one pause for thought about overall quality of it's construction ..about 7000 times tougher than a laptop pack
Ubehebe, you’re going to laugh when/if you break down this pack. It was even easier than ohaya’s find.
I have a pack I have not broke down yet. I think I’m going to take Boaz’s advice and wait on breaking it down. All I would need to figure out is which terminals to connect to and I would have a 10.8v protected battery with self contained charger.
Valid points on the pack, but I don’t have the charger and what would i do with a pack putting out 40 volts? I was thinking of selling it on fleabay but I don’t really know if the thing works or had some kind of defect.
And from reading the link I posted, these are some interesting batteries. For example, I ran one for 30 minutes in my test flashlight and got 4.01 volts after 30 minutes. I have BRAND-NEW Panasonics and Samsungs that don’t do that well, so these things are worth further investigation.
>>>>>>>if you NEED batteries which clearly not many of us do …
No, I definitely do noT need the abtteries, hoo hahahahha. I haven’t needed another battery since like last October. I definitely have a battery problem and might have to check into battery rehab shortly. 
Asking me to not open a pack is like placing a pound of heroin in front of a junkie and telling him not to touch it.
I have a li-ion monkey on my back. :–0
Well, consider yourself lucky for getting 2900s. I got not-so-great light-green samsung 18650-22F cells, which are 2200 mah. I mean they are okay, but I have enough 2200 cells to choke two horses.
Oh well, easy come easy go. Was hoping for samsung purples or panasonic grays.
More to add to the BLF giveaway pile … Then again, I have never had NEW 2200s. They’re only 15% less theoretically than a 2600-mah cell. Who knows. I’ll give ’em a try. (At least they were all exactly 3.46 volts!) Still wish they were 2900s! :–0
But for others thinking of buying these packs, be aware that 2900 batteries are NOT guaranteed.
Urggggh.
Can I see a picture of the battery case? Sounds like he sent you the wrong thing and you need to complain to the vendor. If he doesn’t send you the right replacement, file an ebay claim.
I got one of these in today. Easy to open since it is held together by snap tabs and not glued/welded. All cells were grey Panasonic NCR1850/2900 mAh and were above 2.0V Four are on the charger now…
Just bought the last two, hopefully I get 2900 mah cells and not 2200 ones. If I get 2200 mah cells I'm returning it...
I with you scaru. It would be a clear case because 2200 cells can’t even be arranged to get 5600mah. Everytime I have been sent the wrong thing, ebay has got the vendor to refund me without having to return the item shipped to me.
Another listing for these for $20.69 shipped. He has 49 left:
http://www.ebay.com/itm/New-Genuine-Acer-A110-1295-63Wh-White-Laptop-Battery-UM08B52-/120940257217?pt=Laptop_Batteries&hash=item1c2899dfc1
>>>>>Can I see a picture of the battery case?
I stupidly ripped it apart before looking at the label.
When I cracked it and saw the unmistakable green of Samsung 2200s, THEN I looked at the label:
um08b72 4400 mah.
So look at your label before cracking the case open.
I suppose i could try and argue with the guy, but if I was him I wouldn’t take a pack back in a bucnh of little white plastic pieces. Mine was NOT easy to open. Built like a plastic tank.
It’s only money. I’ll check the label next time.
ALTHOUGH, I have cracked mucho packs at this point and the labels are not all that accurate. I probably would have cracked the case even if I saw the 4400 on the label. I have opened quite a few packs that had a higher mah than advertised mah li-ion battery inside. Never lower, but sometimes higher. So the labels are an indicator of what you MIGHT get, but they’re not always accurate. Same goes for country of origin on the cells. I have opened quite a few that said Japanese cells but were samsungs or LGs. Maybe 10% if I had to guess.
Good luck and check the label.
Betcha everyone gets 2900s except for me. Story of my life. I knew my weekend lucky streak wouldn’t hold!
I would still send him a message. If I were him, I would feel bad about it and just send you the proper pack or issue a refund.
Thanks was expecting price jump… Hoping he still has some left on payday.
Plus shipping. Starting to get to a point where I would consider buying new, new from FT at $11+ for a pair.
Plus shipping? still says “fast n free” shipping
The listing that I posted is from a different seller than the original posting…
This guy has two left for 16.50. They appear to be the same, but you better double check me.
Hey, how are the batteries doing that everyone got out of the first packs of 2900s? The ones that were charged to like 1.9 volts?
Mine are not holding a charge so great.
A full 4.20 charge slides back to 4.16-4.17 after a couple days. Not great in my experience …. ALTHOUGH some of the new Panasonics seem to slide back a little to like 4.17 or so and hold that charge for a month or so. Hope that’s the case. Plus I have only cycled them a couple times. Sometimes 10 cycles are needed to hold 4.2 in my experience. Then again, I have had many new batteries hold a 4.2 charge for amonth after the first charge.
I see. It just said “Calculate Shipping” for me. But after I plugged in my zip code, it then said indicated shipping was free. That’s a pretty good deal. I was thinking shipping within the US would be a pretty good size charge.
Yeah Ubehebe, that looks like the same battery to me too.
I have some new, fresh, unused versions of these cells and they do the same thing. Only one of the 24 recycled cells that I have behaves differently. It drops to 4.10V after a week or so. All the others are at 4.18 to 4.19V That seems to apply to all types of cells that my I4 charges.