These are great! To reduce weight I removed sticker, and that is fine but only saves a small fraction of a gram and they don't stay in the frame as well. I tried trimming the metal seam and 3 of the 4 batteries puffed... so leave them as is, be nice to them (don't run below 3.3V, bring back to storage charge right away, and don't charge up while they are hot) and these batteries will treat you well for many many flights.
Peace and Love from RI!