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.
>>>>>I have some new, fresh, unused versions of these cells and they do the same thing.
Yeah, like I said, the newer higher-capacity Panasonics don’t seem to hold a charge like the old ones. I have like 25 Panasonic CGR18650D 2400-mah pulled cells that hold a solid 4.2 volts for 2 months or longer. And work like workhorses; can’t tell the diff in runtime in or output between them and the 2900s. Really.
Ditto for the newer samsung pinks (2600) and purples (2800 I think). Ditto for even the ancient Panasonic lime-green 2000s or CGR18650CE (2250 mah). Hold a solid 4.2 volts for months. And those latter two be OLD. In fact, the runtime isn’t so great. I suspect they have been beat to heck and back, but they still hold that 4.20 volts for 30 days or more.
I mean the panasonics are great cells and all, but that’s why I have been shying away from them and liking the samsungs more. What’s the sense of charging a battery and going to use it 30 days later and finding it at 4.05 or lower?
Having said that, I have found with panasonics 2600 and higher, if you cycle them 10-20 times, they seem to hold a chrge mUCH better. But not one cycle, wait a week, then another cycle, wait a week. What seems to work is run it down to 3.75 volts; charge it again; run it down the next day; charge it up; run it down the next day. Then they seem to hold it okay.
The 2200 (light green) and gray (2400) samsungs have the same problem. In fact, maybe only 5 out of 30 gray samsungs I have found were worth keeping. But then I don’t know their life history as I pulled ’em from packs.
I’m finding that samsung pinks and purples and panasonic 2600s are my best performers. I know that may not be what the charts and tests say, but when I get back home after about six months of my usual nightly desert walks, those are the cells that always read the highest remaining voltages in all kinds of lights. That’s a mix of new and pulled cells.
Just saying. IMHO. Not my intention to start a big my-battery-is-better-than-yours hoo-hah.
The cells from the other thread that I have are doing great. The 4 I have tested so far have been like new condition. Holding voltage, no heat while charging and discharging almost exactly as Panasonic specified.
All my Panasonic 2900 mAh cells actually hold their charge quite well. The voltage does drop a little when they come off the charger, but it stabilizes. I just tested a couple of cells that were last charged around 3 months ago and got 2700 mAh out of them. The light they were in had been run for a few minutes during that time.
Another seller has a few left at $16.50 with free shipping here
http://www.ebay.com/itm/360600629939?ssPageName=STRK:MEWNX:IT&\_trksid=p3984.m1439.l2649
got one on the way myself.
>>>>> I just tested a couple of cells that were last charged around 3 months ago
What was the voltage after 3 months?
If a cell drops back to 4.10 after a couple of weeks of nonuse (assuming it started at 4.20 volts), it just lost 20% of its capacity for me. And 20% of its BRIGHTEST capacity.
The way I look at it, I can really see a difference in light output when the battery reaches 3.7 volts or so in unprotected cells (from a 4.2-volt starting charge).
If I have a cell that drops to like 4.10 or less after a couple weeks or even a month, I chuck it. I have WAY too many other cells (WAY too many) that hold 4.2 volts for months.
In no way shape or form, am I suggesting that others do this. Nor am I criticizing others who keep cells that drop from 4.2-4.10 after a month. I just have so many batteries (pushing a ridiculous 300 I think at this point) that I need to somehow winnow the best from the less.
That seller has a really good track record and is in the US too. I think it’s time for me to recycle all my poor performing used laptop pulls (most of them) and use the remaining used pulls in cars during the summer months.