Hi! I am new to this Forum. My Name is Lukas and i am From Austria ;-)
I have a few questions:
- How long does the 18650 battery last on High mode?
- Has anybody tried other cells than 18650?
I know of the 12AA to 4D cell adapter but unless you use "High Capacity" (Which means expensive) AA-NimH Cells the Energy Density is kinda low.
I have trouble to find rechargeable Li-IOn D-Size Batteries.
I dont really trust those China Made "all Black" D-Size Li-Ion's from Kaidomain.
Somewhere else somebody had to mod them for a slow start to prevent them from shutting down because of the Protection Board.
I also don't know if they can handle the high Current.
Has anybody tried them in the triple P7 from Wichtel?
I hope you can help me.
Best regards, Lukas
my 3xp7 runs on 6x18650. 3s2p, dual bored 4d mag, runtime is about 1.5hours, but i can't run it for that long non stop on full power, heat becomes an issue, so if you building one, my advice get multimode driver, imo for that light it is a must.
i also have 12aa adapter that i sometimes use in the light, i use eneloops,. capacity is half of 18650's that i have, so is the runtime. eneloops are 2000mah, i know there are aa cells of larger capacity, 2500 or so, but eneloop's quality and low self discharge rate, compensate for lower mah's.
as for d cells, i, ve never seen li ion d cells made anywhere other than china, (doesn't mean there aren't, i just have not seen them) kd sells 2 types, blue (unprotected, and black(protected), i have ordered them for my halogen 100w project, when i get them and test them i'll post results.
32650 (d cells) have capacity 5000mah, 2 18650 in parallel have the same capacity, sometimes more (depending on cells), so no need really to use d's that you don't trust. however you'd need to spend some money on machine shop to dual bore the light, i spend $60 , but it was worth it.
i don't know about protection modding on those black d cells, but if protection kicks in that means voltage is low, or drain is too high, so it drops volts rapidly,
good thing i have slow start switch on my halogen project,