I don’t think it’ll work for all lights.
Mechanically/dimensionally 3x26650=4xC-size,
but if the driver doesn’t support the low voltage of 4x NiMH it might not work.
But it’s confirmed for TR-J12.
I also tried it on a TR-J18 that I have, but current draw with 4xC-size was a lot lower (only ~2A)
so with that one it doesn’t work as well.
Should be receiving a 9x XM-L soon, will see how that fares with NiMH
-S
Anyone know the tint/color temperature of the TR-J12? Is it cool/neutral/warm?
I had the “777” Smallsun.
It threw pretty well and was as bright as you would expect.
I think it was not regulated or something, since it faded pretty fast with Alkalines…
These lights are more than LED Mag Lights…
The TF 3t6 works with 4 AA (same length as C’s). Draws 4A for full brightness in high mode.
Dunno where OP lives but in the US normal stores tend to carry more C/D cell cree lights, like Rayovac “Indestructible” 3c/2D
Correct - I’m from the US and have a bunch of AA, C and D size NiMH cells.
One more question - any other neutral/warm multiple XML lights without PWM (that can use AAs or Cs)? Trustfires seem to have bad PWM.
Pretty much all budget lights use pwm for lower modes. Skyray king pwm is pretty bad on low, too. 200hz. Dry is around that, too.
I just meant why would someone buy a small sun q5 for more than a mag?
Mags are pretty expensive outside the US. Even in the US $25-35 > $17.
which 9xml are you getting? so with the 4xc size on the tr j18, it was less bright than using 18650s and 26650?
Since I just got a light meter
Quick and dirty ceiling bounce measurements in the bedroom
| Light | Lux w. NiMH | Lux w. Li | |
| TR-J12 | 225 (4xC) | 215 (3x26650) | |
| TR-J18 | 90 (4xC) | 235 (3x26650) | |
| UF 7T6 | 180 (4xC) | 190 (3x26650) | |
| TF X100 | 95 (4xC) | 350 (3x26650) | 310 (4x26650) |
| SR King | 210 (4x18650) | ||
| TF 9XT6 | 320 (3x26650) | ||
| TR-3T6 | 110 (4xAA) | 125 (3x18650) |
The TF 9x XM-L I got won’t even start on C-cells.
-S
Thank you Sigster for the great info!
The TR-J12 is looking might good on C cells.
How does the UF 7t6 compare to the J12 or J18? Kind of interesting it’s not called the 6t6 given it has 6 emitters (even though product description says 7…).
Mine says
UltraFire XM-L 7T6 - Brightness up to 9000LM
on the side and has 7 emitters
-S
So, would you say it’s better/worse build/tint compared to the trustfires? Thinking of getting a super-flooder and would appreciate some comments, thanks.
WOW! I have ALWAYS liked the feel of C cell Mags. This one looks REALLY interesting. I also saw that, for another $9, you can get a tube for it that will fit 2x18650. So if you have both types of batteries, this might be a REALLY good way to go! You could use C cells if you want runtime or a light that can double as a weapon. Or, if you want something smaller, switch to 2x18650. Either way, another nice thing about this light is that you don’t have to worry about failing battery holders.
Here’s a 6 C cell light that just got listed online at Costco:
http://www.costco.com/Life%2BGear-1000-Lumen-LED-Flashlight-with-Flasher.product.100008746.html
I’ll interject this’n…………….again. 
Takes 3AA’s, 6, or 9.
Uhh that is a brute! I like it :-)