hi, when we issued the E2L flashlight firstly, we had not prepared the 18350/18500 battery tubes for buyer. Now they are available. Sorry let our users wait so long terms.
the color of the tubes will be keep accordance to the first batch E2L flashlights. And I set a lower price and shipping fees for our old buyers. you can click the picture to open AE link.
The Convoy S2+ uses a pill. There are lots of ways to shorten a pill to open up extra space inside the tube for more battery.
In contrast the E2L uses a pill-less one-piece head. This gives better heatsinking to the outside of the light, but the downside is there’s no pill to shorten. The gap between the driver and the back of the star in the E2L is fairly large, but it can’t be easily bored out to open space in the battery compartment because the head dips inwards at the heatsink fins. I suppose you might do it with a small driver. Maybe a 15mm fet driver, but then you won’t be able to use the driver retaining ring so will have to figure out some other method to get negative ground connection to the driver.