Hey man, let me introduce myself My name is Juan (Spanish equivalent of John). I am just a random guy from argentina( deep south of latin america) that loves so much his variax 700 and wants to get rid of the tethering. Leaving the pedal at home while going out for a gig, or a jam with friends of his. And doesn't want to deal with alkalines. The thing is, i have the knowledge, tools and supplys to replicate your experiment, but i read elsewhere in this forum, that OLDER IC'S IN LEGACY ELECTRONICS LIKE THE 700, DON'T GET ALONG WITH LITHIUM BATTERIES, because of the voltage drops/peaks. So, the 2 real questions are: Q1) is this some kind of hoax spreaded by the line6 support team so we "behave as good boys" and don't mess around modding the variaxes? Q2) if it's not, does using a power bank fix that issue and my variax will be ok? JUST TO CLARIFY, MY VARIAX IS THE ONLY ONE IN MY COUNTRY (THAT I KNOW OF) and i don't wanna mess it up, i am willing to take the risk of doing this mod, but not if the risk is too high. Thanks in advance for your answer, (if i can get one, because of your post being quite old) and sorry if i messed up writing this post, english is far from being my native language.