LM2596 VV Mod problems.

[HaggardFlorist]

Hello,
So I am in the process of building a VV box mod using an lm2596 board with the voltmeter attached.
And I finished soldering and putting everything together and I'm having issues with the board.
I wired up a basic 9Volt battery for testing purposes and it fired up fine and I adjusted the Voltage output to 4.0V and screwed on an atomizer and pushed my momentary and it started to vape but when I looked at the Voltmeter, it read 1.83V; release the button and it goes back to 4.0V, I've tried adjusting the Voltage output to various levels but the same thing always happens, I push my button and it reads 1.83-2.3V. I followed a pretty basic, simple wiring method and all of my solder joints were good and everything sits right in the box but for some reason, its doing that.
Any ideas?

 

[Choc_Addic]

Does "Voltage under load" means any thing to you?

Time to study up.....

Cheers

 

[balagadi]

I am not an expert in electrical field, but I would like suggest you to check the board if there is any problem there

 

[HaggardFlorist]

Does "Voltage under load" means any thing to you?

Time to study up.....

Cheers

So I read a few posts explaining voltage under load but it still doesnt make much sense to me. the examples on the posts were slight drops in voltage(.01-.5V) whereas the voltage drop in mine is 2.0-5.0V. Why would that be? Am I using the wrong kind of battery? Or is there something I am missing?