Thanks HKJ! This cell is a strange one - it does under perform, as expected, compared to the high amp cells. But I'm seeing some odd behavior in the charger. I set my SkyRC MC3000 to charge to 4.22V, so when I take the cells off, usually they read at 4.21 or 4.20V. For this VapCell 5000, it takes a long time to get to the 4.22V level, longer than any other new 18650 or 21700 cell I have, but some old cells behave this way. Then once fully charged, it drops fast - luckily if I can get it off the charger above 4.18V. In fact the first time, I pulled it off, measured at 4.18V, then the next day just sitting on the bench, it measured 4.13V. I have to see if this droppage is consistent - maybe it's a first time issue.
It's weird you measured such a low resistance - usually low resistance and high amps go together. Also capacity is lower than the rating even at a 0.2 amp draw.
So far to me, mine has characteristics of an old cell - hope I didn't get a bad one. I only bought one as well so can't compare it.
Don’t get me wrong, I’m happy with the wealth of test results in your comparator; but if you decide on a redesign…
It may be nice to have all tests of all sizes in one huge comparator.
Then the user can filter of type, drain and capacity.
For my use that would be great. For example I use the highest capacity 18650 found in your tests. The only 21700’s I’m interested are the ones above that capacity. I don’t need very high drain cells so I would for example filter 21700, 4200 mAh @5A
People that love extreme lights likely will use a far higher drain setting.
Maybe I’m asking/suggesting way too much, but I think it would a very useful upgrade of your site for many.
It may be, but it is not easy for me to do.
One reason for multiple comparators is that they use different scales.
I may add a text based filter function, that could filter on the battery title, i.e. brand, capacity and size. But this is not something I will be doing just now.
What I might be able to do is a online table (Like my chargers and multimeter tables), but with filters instead of sorting, but what to include in this type of table?
Battery name, battery size, date tested, button top, capacity at 0.2A, capacity at 3A, capacity at 10A, capacity at 20A