Hi folks, I was wondering if anyone else has found this weird. I recently received the 521 Plus tab from Geekvape. Been using the included add-on voltage checker to test output voltage from a mech mod. In this case I'm using the Athena squonk mod from Geekvape, powered by a single LG HB6 (Pink) 18650 battery. Test#1 Mod is screwed in to voltage checker, attached to the tab. I'm getting a reading of 4.12 V output. This is without an atty attached to the 510 center mount. Attaching an atomizer with a resistance of 0.15 ohm, I fire the mod directly and the tab records an output voltage under load of 2.4, 2.55, 2.61 V. I fired three times to get an average reading. Does a voltage drop under load of 1.6 V seem crazy high to anyone else out here? It got me wondering if there's something in the voltage checker that is adding to the load. Test#2 So I decided to take out the copper plated alligator clips, attach them to the slots in the tab, and the mod + build itself. Bypassing the voltage checker, basically. I also wanted to see if the 521 Plus tab could be used effectively as a multi-meter. I have one clip attached to the positive metal contact inside the mod. The other is clipped on the negative post of the atomizer. Before firing, I am getting a reading of 3.97 V on my 18650. I test fire three times and get the following results: 3.55, 3.52, 3.4 V. Average of 3.49 V. I read that as a voltage drop under load of 0.48 V on average. This also feels more consistent with the performance of the Athena generally. I'm wondering what is correct here. Could it be that the voltage checker is exaggerating the true voltage drop under load? Also that the 521 Plus tab can be kinda hacked to work as a multi-meter? Thanks in advance for any help. I checked a bunch of reviews but no one touched on this issue, or tried connecting the clips directly to a build to test drop this way around.