Output measurments of different cells

[dazed1]

@RaceR86

It really depends on the light.

On TK61, even modded. You might as well use stock NCR18650B. Absolutely no reason to use any high drain cells.

See the stock section of this TK61 teardown/mod thread. Its perfectly regulated from a buck driver. And even with cells almost fully drained. The light will not pull more than 1,1A from each cell (when stock).

Unless the drain on each cell is more than 3A, its no use to go for PF/PD over the typical “B”. HKJ`s webpage shows discharge graphs nicely. Those graphs combined with the knowledge of how much a light is able to pull gives you the answer to which cells are best suited. With a DMM you can always measure how many amps it pulls.

I often see see recommendations of using “high drain” cells, even in lights where its not needed. Lights that are well regulated and does not put a lot of load in each cell.

If the light is not properly regulated, output will often start to sag at some point. In my X6M review you can compare output between two different Keeppower cells. First its some sag due to heat. Then you will see better how voltage sag between the different cells works on output.

I saw this post for the TK75 mod… (batteries drain) keep in mind i’m new to this stuff…