Hey guys, dont know if this is the right spot to post this. I searched the forum and the internet I just got a question in how long is too long to keep using the same batteries. I been mtl vaping for a while now and I been rotating the same 18650s for like 3 years. I rewrap them and they work great I probably dont notice if they are showing there age being that I vape at 12-15 watts. I guess I'm wondering if it's safe or should I just recycle themand grab some new ones. Thanks for any help