Trustfire X2 SST-50

[mvyrmnd]

Hi All,

Has anyone been brave enough to take a punt on the Trustfire X2?

It runs an SST-50 on 3x18650's in parallel. Claims 5A to the emitter, which should be possible on that battery setup.

With an 80-odd mm reflector, it should throw fairly well too!

It's a little expensive, in the $100 range, but I was hoping someone out there has given it a shot.

It can be found at all of the usual suspects.

 

[FlashPilot]

It runs an SST-50 on 3x18650's in parallel.

I feel sorry for the person that loads this thing with unbalanced or compromised cells... especially the ones the vendor sells from china. This might make for a great pipe bomb.

Why would anyone introduce such a risk by designing such a light with 18650's in parallel?

 

[riccardo]

Why would anyone introduce such a risk by designing such a light with 18650's in parallel?

I guess that the cells are wired in series, only the mechanical organization is parallel with the cells sitting side by side like on the RRT-3.

Off course I could be wrong.. but I also think that a parallel of three cells is just dangerous and unneeded.

 

[mvyrmnd]

The photos that are available clearly look like parallel.

 

[FlashPilot]

The photos that are available clearly look like parallel.

No doubt about it. :fail:

 

[riccardo]

The photos that are available clearly look like parallel.

The photo show nothing. The photo only show the mechanical shape of the battery holder that arrange three 18650 side by side. Nothing more.

If you watch the black disks on the battery holder you'll see that it is insulated and only the three spots for the positive pole of each 18650 are left uninsulated, this mean that the disk can be a PCB and the wiring can be just hidden under that black coating. The back of the battery holder appear to be completely insulated, and only the power switch it's protruding through a white plastic disk. This means that both the poles are reported to the front of the battery holder (so, if the batteries are simply in parallel why to bother to report one pole from the back to the front if the metal body can work as contact?). The three column keeping the holder together are insulated as well and they could easily be the negative pole of each battery coming back to the main PCB (the black one).

Least but not last 4.2*3=12.6V and the spec released on DX report 12.6V to be the maximum voltage for the driver of this flashlight.

We have seen several battery holder more or less like that (RRT-3, M2C4..) and none of them is making a parallel of the batteries.. the orientation of the batteries can be different but orientation itself it's not telling everything..!

:wave:

 

[A380]

Riccardo is right, the batteries are wired in series.
I have the first model that came out with a P7, with the same sort of battery holder and are wired in series.