I recently got one of the pre-made Battery Voltage Indicators from madvapes and was doing some testing of my gear. I noticed my 3.7 box mod would drop from 4.2v to 3.5v when under load (LR510 atty). So I tried one of my Riva batteries and noticed there was almost no voltage drop with the same atomizer. I assume this is from the regulator in the Riva, so Im wondering is there something I can add to my box mod that would do the same thing?