The side by side design allows to make a compact multi cell light that isn’t too long or too thick thus it is more pocketable than 2S tube lights or 3P/4P soda can lights. That is if the head isn’t thicker than the body, or at least not significantly.
It can deliver a lot of power efficiently in 2S configuration with a 3Vout buck or 12Vout boost driver, covering all different LEDs. >4.5Vin offers many options for powerful and efficient buck converters and allows more power with a boost converter as well.
Same point about the LEDs, for example with 2 side by side B35As which when used alone aren’t super bright, or 2xXHP50.3/XHP70.3 HI for max raw output.
2S configuration isn’t dangerous if inserted incorrectly unlike 3/4S, it will just not power on, I remember you mentioned safety concerns about the abandoned 3S 21700 7xXHP70 project.
It is a change from cylinder lights, which are very common and I believe the only shape offered by Convoy. I think it’s possible to make pretty slick designs with this shape if one is inspired enough.
An example of a flashlight in this format is the Klarus RS30BA (2x18650)
They’re just pretty thin guage o-rings. I have a bunch extra. Try unscrewing the cap 1/2 turn at a time, tightening back a hair each time. Good lube helps, too. I use Super Lube O-ring lubricant (liquid).
Will there be a titanium T3? What about a titanium 18350 tube for the S2+? Looking forward to both! The T4 is just too long to fit comfortably in my pockets.
T2 have worst driver, and worst battery compatibility, than T3, and that is it.
Don't see any point in doing T2. I thought T2 is there just to sell out what was produced, and is not produced anymore, because the T3 is it fixed version.