Today I was lurking in a chain store in spain (alcampo if you want to know) and found some of these in sale.
For those who dont know it, buying batteries in spain is expensive (there was some AA duraloops at 18+ € in the same store) and finding LSD cells at 0.5 € each its really a bargain, even cheaper than brand alkalines.
So I bought a pack of 2 and will do some tests: discharge, break-in, etc trying to figure if they are bad even at that low price.
Took some pictures in a hurry too:
As you probably noticed, there are no capacity marks anywhere. Dont be fooled by the 2€ label: I only paid 1€.
Everfast vs eneloop vs GS Yuasa enitime
They say 900 mAh. Too good to be true. We will see the real capacity in our tests.
Detail of the top
There is a thread in the forums that states that there are only 3 different kinds of LSD cells and the rest are just rebrands. If that is true, what kind are these? (the bottom of the cell is plain as Yuasas and eneloops).
Doing a discharge right now.
--- First results ---
--- Final results (15-03-2010) ---
Cell 1 Cell 2 Cell 3 Cell 4
mAh, V mAh, V mAh, V mAh, V
Discharge (200) 290 1.20 300 1.20 517 1.20 522 1.19
R&A (500/200) 756 1.43 771 1.42 - -
Discharge (200) 751 1.19 763 1.18 - -
Break-In (800) 754 1.43 761 1.42 - -
Discharge (200) 749 1.21 758 1.20 - -
R&A (500/200) - - - -
Since there is a lot of data I made a spreadsheet with it.
- The V number you can see before the first actions is the Voltage in open circuit after resting at leas 24 h.
- Each package had 2 cells (odd, even).
- You can see that there are basically two groups of cells, one that had around 300 mAh out of the package and the other one that had around 500 mAh. Probably they were from two different batches and dates.
They are pretty consistent (at least more consistent than traditional NiMH chemistry) in capacity and they did not lose some of that capacity with every charge, so I think the the purchase was worth it
I will do a self-discharge test like I am doing with the Yuasa enitime cells.
----------- Update June-08-2010:
Results of 3 month self discharge and Break-In after that.
---------- Update 08-28-2010:
Cell - Purchase mAh - Break-in - 3 Month (%) - Break-in (3 mo)
69 289 757 659 (87) 762
72 527 748 654 (87) 752
After 6 months.
Cell - Purchase mAh - Break-in - 6 Month (%) - Break-in (6 mo)
62 289 757 623 (82) 758
64 527 748 24+621 (86) 760