Is this a rewrapped 25R or a rewrapped VTC5 (can’t tell from the positive pole design)? If it’s a 25R, the results are a lot better compared to the green 25Rs you tested. Could those 25Rs be a lower quality bin or something?
Is the VTC5.
The mAh and the discharge of the battery is the same as the Sony VTC5.
There is however something new .
In the past , the battery had WHITE label and was battery with button top.
Another point of recognition , is the top of the battery , which is the same as the VTC5.
Believed to have been slow however to put this battery again the KeepPower the market , especially now that as LG and Samsung, have far superior batteries with more mAh and 20 Amperes yield .
Yes, it seems the cell makers are optimizing their chemistries for the sub 10A region. For us that’s great, that about our need for single cell FET drivers.
Another great review and the battery comparison tool is outstanding. Thank you HKJ.
Can you however give us you view about testing non original manufacturers (Keepower, AWT, Efest, Xtar and the like). As they are simply repackaging and at most adding protection circuitry I fail to see a point in the detailed tests.
Is it not sufficient to just make a reference to the OEM cell ?
Sometimes it would be, but there are some problems:
Not all rewrappers wants to say what cell they use.
Some rewrapperes use Chinese cells from less known factories.
It can get a bit boring to test 5 copies of the same cell with different wrappers. My automatic testing system helps a lot on that, I do not have to spend much time on each cell, even if the actual test takes a week.
As long as the rewrapper is honest and send me the same cell as they sell*, you will get valid performance data for a new cell.
*I believe that nearly all do that. Keeppower I count as one of the very reliable rewrapper.
When dealing with a larger reputable store (like nkon.nl) that may have both the “plain” VTC5 (where there are many fakes of it around) and the Keepower rewrap, assuming their price points are close, which one would you chose? What I’m actually asking is, is Keepower trusted to use the same cell for all batches of the same SKU or is the vendor trusted to be able to source original Sony cells?
If you want VTC5 I would go for the VTC5. I do expect Keeppower to use the same cell I got in their wrapper and if they say it is a VTC5 it will be and then you can just go for the cheapest one.
Will prefer the KeepPower , because many Sony are false and from the moment that a long time has stopped producing these batteries, more credibly to buy KeepPower.
So far in all my purchases, none were false or battery other than that announced by the company.
Many will copy the original product.
But it is rare to copy someone batteries KeepPower or some other such company in my opinion, although lately we saw this with the batteries AWT 2500/2600.
The KeepPower so far has only give good products in 18650 , because everything had the correct battery under the label of .
So if someone wants to VTC5, I believe it is safer to purchase the KeepPower, because it is tested by a company that is not lying on its products .
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