Sofirn SP70 Alone $50, PM for AMZ US CODE(LIMITED)

I’m sold on it - got two on the way.

@cncyana, that’s right.

BeCu C17500, while having the best conductivity of all BeCu spring alloys, also has very poor yield strength.

That means plastic deformation, especially with a small top diameter—-bottom diameter ratio, is a huge problem with the Intl Outdoor spring.

Doubt it was heat at all.

The stock M43 driver would never pull enough current to make the springs to hot.

Just for the record, there is no centering ring.

The base of the reflector doesn’t sit on the MCPCB either, instead, it seats on the cut shelf in the head via the belt around the reflector such that the base hovers approx 1-2mm above the MCPCB.

Interesting… I swapped out the MOSFET for an SIR404DP, changed the leads to Turnigy 16ga. With spring bypasses in place (still dual springs) and Samsung 30T’s freshly charged this light makes 10,500 lumens at start and drops down into the mid 8000’s by 30 seconds. In this case, the head IS starting to warm up nicely. :smiley:

Edit: Recharged the 30T’s, looks like it’s pulling 21.3A at start at the tail.

This pleases me :)

10,500 is the most I’ve ever seen from an XHP-70.2… and this is with my lightbox calibrated and diffused so the meter reading is actual numbers, I really feel like my meter is showing a little low but it’s where I wound up with 6 diffusion panels, the Maukka calibration lights were almost spot on, but low on the S2+ even if only a little.

I get 253.25Kcd at start and 236.75Kcd at 30 seconds on the meter at a 5M reading.

This is on the box, sorry, I guess I flipped the i8 to landscape AFTER I started the video. Technology sometimes eludes me…

My light has a centering ring.

Mine arrived 1 week ago with the standard (non-HD) batteries.
I was thinking of ordering a couple HD’s - as I understand that will increase the output a bit.

If there is a BLF version in the works, I would just wait for that light.

So the question is - when might the BLF version might be available?

TIA

Let the obsession begin. Again.

I’ve been trying to get the code via PM for the last few days. I wonder if they are out of the office?

Yes they are.

Thank you!

Disappointing news for the Sofirn 26650 HD cells.

Measured at 30 second with my calibrated lumen tube - 4970 lumens

So much for their 6800 lumen measurement they stated with these

You sure they are even the right ones?

Yes, they have the 5000mAh 25A wrapper and have the new button top

Fully charged?

Yeah, they’re charged to 4.20v and checked again with my DMM.

I’ll test them later with my CBA because it seems they’re discharging unevenly. After 30 sec they were 4.14v and 4.18v

Please provide some context.
How many lumens do a different set of high drain batteries produce? What other cells do you have?

After bypassing the springs with 20awg I get 5900 at 30 sec.

I’ll charge up a couple 30Q’s as that’s the best I have

Ok what?

5900 lumens is nothing like we would expect.

Would be really sad if you got dud 26650s, and the 30Qs get around 8000 lumens.