I use 18650 cells over pocket cells in my hobby projects if possible: partly because I find it easier to get consistent quality 18650's in my local market (ship

I use 18650 cells over pocket cells in my hobby projects if possible: partly because I find it easier to get consistent quality 18650's in my local market (shipping lithium ion batteries is a hassle), partly because it allows me to use the same pool of batteries across many things (power banks, torches, different DIY-projects).