Theoretically it should be possible to increase battery capacity simply by adding one or two cells in Parallel with the existing one. But it's highly recommended to use the exact same model as the original and also make sure it's genuine as well, not fake brand cell. It requires a bit of soldering and DIY but I think it's possible.
@@AudioCuriosity I was lucky I got mine on sale brand new for only $99 USD and usually its $475 which is a crazy discount. It was only discounted on Harman's official website too
@@AudioCuriosity speaking of flip 6 my parents have one and I've made a few videos but I can't use it anymore because they think I'm gonna break it for some reason. Trust issues I guess but the store we went to when we bought it had brand new Xtreme 2's which was interesting
