Saturday, 14 February 2015

What 18500 batteries for MECH MODs?

There is a lot of 18500 (18490) batteries in the market. Cheaper, more expensive, originals, clones, etc... But which one is THE BEST for my mech mod??
During last 2 years I've been testing it in various ways. Finally I found that the best way (as close as possible to reality, actually worse then reality :-) ) is continuous load test. Preferably at quite low "coil" resistance, lets say 0.5 ohm. So, I constructed test setup described here and started to test... Below you can see the results for 18500 batts:

EQUIPMENT UNDER TEST



The RESULTS



Having the voltage level during whole test and knowing the load resistance we can easily calculate the useful capacity of tested batteries. I emphasize the useful word because it is capacity calculated exactly for the conditions described in the test: for battery discharging from 4.2V to 3.3V at 0.5 Ohm load. In a different measurement methodology the total capacity will differ from this, BUT in my opinion presented methodology is the best from point of view the users of mech mods!

1 comment:

  1. Recycling batteries leads to about 51.3% savings in natural resources, and not only because of decreased mineral dependency but also because of reduced consumption of fossil resources and nuclear energy demands. batteroo

    ReplyDelete