:< these all look like button tops, I need flat tops. I saw "AW Protected 18650 3100 mAh" for $17ish they look like flat tops, but are they longer than the 2200 desay ones? mmm I guess I don't really know anything about batteries lol.
if it helps, this is the kit i got: LavaTube 2.0 - VariTube.com