Charging rechargable battery using USB?
New here and I have a question. I was building a NES MP3 player and everything is going fine until I got to the battery part. At the moment, it current uses normal nonrechargable AAA battery to power it but I was wondering if it's even possible to put in a rechargable battery in there and wire it up to the USB port so that plugging it into the USB will recharge the battery? If so, how do I do it? Thanks in advance