so I got this panasonic NCR18650PD battery. And I tried to put it on my cutlass 5.1 to try unregulated mode.
I had to put multiple magnets because the chamber was too tall for this battery. I happened to have some rare earth magnets I got from ebay(thin, large, and brushed) and used several of them(like 6) to make contacts, checked the voltage without atty(showed 4.1v), then screwed on the A7 with dual coil setup of 1ohm, then fired it while reading the meter... then it was showing 3.2v?!?
Weird... because the discharged current according to the ad where I bought this(FastTech) is supposed to be 10A.
So I tried the different magnets, 3 of the ones I got from cappy(thicker, smaller, and shiny), and check the voltage under load and this time it's showing 3.6v. Little better, but still not good. Off load voltage was still showing 4.1v.
So it looks like the type and number of magnets contribute to current transfer. I wanted to try without magnets but I don't know what I can use to fill the gap with. I want to know whether it's the battery being not good enough or it's purely the magnets' fault, or both.