I had some troubles getting mine to work in my Ggts. It took a while but I finally got it. It doesn't just drop in. It is a tight fit an it has to be in there right. Honestly I don't know what I did to get them to work or why it didn't the first 30 min with my 18490 batts.
Also my digital voltage display will not work on top to see how many volts I'm at.
Also my digital voltage display will not work on top to see how many volts I'm at.