The indicators have no bearing on the length, which is 2.9940 AFAIK a different cell wouldn't work. It would of course have to have a USB port, and the size has to be exact for the LED dome to line up to the USB. I tried with an equally large 21700 that fits the Nitecore E4K lightsngear.com/nitecore-e4k-4400-lumen-next-generation-led-flashlight/ and it wouldn't line up. If there IS another 21700 that would fit, I'm not aware of it.
The indicators on the battery here are pretty cool. How much longer does it make the cell? Can you use a standard 21700 too?
The indicators have no bearing on the length, which is 2.9940 AFAIK a different cell wouldn't work. It would of course have to have a USB port, and the size has to be exact for the LED dome to line up to the USB. I tried with an equally large 21700 that fits the Nitecore E4K lightsngear.com/nitecore-e4k-4400-lumen-next-generation-led-flashlight/ and it wouldn't line up. If there IS another 21700 that would fit, I'm not aware of it.
Mine should be here Today or Tomm...thia will go in my bag.
PWM light from Thrunite ! I may pass on that light Great Reviews.
Yes I noticed a small amount of PWM on low mode.