I just had this idea to make a solar bank. Did a research and I found someone's project that's similar to what I plan to do but I don't know what modifications to make to the whole thing. Here's it.
I want to increase the power output so I can use it to charge a device numerous times before I try to recharge. Don't know if I'm to use a different IC and a different battery or just stick to the initial design. I noticed that this was the second version for this solar bank design.
So, I need someone that can point me in the right direction on what to do and what not to do.