Help ID these 18650 from laptop pack?

[ltpdttcdft]

So I thought it might be a good idea to obtain bare 18650s by purchasing a "new" off-brand laptop pack via Amazon . . . but I think I've been ripped off.
Can anyone help identify these cells?

Specs:
7800mAh/87Wh, 11.1V, 9 cells/Samsung cell

Since the pack is 3s3p, each cell should have 2600mAh.

Calculation: 9 cells for $23.76 free shipping = $2.64/cell

Sounds like a good deal, right?

But testing on one of the cells tells a different story.
Result was 1651mAh when discharged at 0.2A from 4.1V to 3.0V.

(High resolution: http://i50.tinypic.com/13zn14w.png)

These sure don't look like Samsungs:
(High resolution: http://i49.tinypic.com/2ih6nae.jpg)

 

[ElectronGuru]

Amazon is the new eBay. Unless it specifically says "sold and shipped by amazon", consider it suspect. Especially when the price seems to good to be true.

 

[ltpdttcdft]

lol Amazon is the new eBay...
What kind of price is good enough to be true? (in mAh per $)

For comparison, this particular cell worked out to be 625mAh per dollar.
1651mAh / $2.64 = 625mAh/$

 

[Shadowww]

Well, you can get genuine Samsung 2600mAh cells at $5.58/piece which is ~465mAh/$ (or Sanyo 2600mAh cells at $5.54/piece which is 470mAh/$).
Not as cheap, but they'll retain more capacity after months of use than those cheap chinese Li-Ion's, not to mention the safety factor.

 

[ltpdttcdft]

*sigh* That's disappointing... and factoring in shipping to Hawaii it's probably even worse...

Edit: and checking HKJ's charts, even for brand-name cells, the actual usable capacity of the cell is still somewhat less than the nominal capacity... for example, the Sanyo 2600mAh cell gave about 2400mAh.

.

So these are Chinese cells? Any idea on the manufacturer?

The text on the cell says:
aso fi2h19ef 800564 (the last 2 digits change - probably a serial number?)
+ (barcode) -
szn

 

[Shadowww]

*sigh* That's disappointing... and factoring in shipping to Hawaii it's probably even worse...

Edit: and checking HKJ's charts, even for brand-name cells, the actual usable capacity of the cell is still somewhat less than the nominal capacity... for example, the Sanyo 2600mAh cell gave about 2400mAh.

I tested my Sanyo 2600mAh to 2587mAh at 0.5A discharge, HKJ's results are bit lower than nominal because he terminates charging at quite high current (100mA) while datasheet-recommended is 50mA for those cells.
Also, I'm talking prices with free world-wide shipping.