There is a powerful way to advance your preps. We are at a point where a whole new group of products are coming out that can be powered by USB. These USB devices offer all kinds of options already. These USB powered devices make all sorts of things much more portable and more energy efficient. The problem with the USB powered device is being able to charge on the go. There is a market for this as well. Pay close attention to the types of things that are coming out and can be powered by USB.
This article is a how to on creating a wireless charging powerbank. Having a quality powerbank will allow you to make this change. Prepping and tech are going to merge even further as the tech world takes over. You should not turn a blind eye to the fact.