【convoy】H4 and B35AM options are updated

Is there any chance of a 14500 H series?

I’m looking at mode specs for the T4, specifically the low-high max 50% group.
“sub-option 1.9 (normal-flash 9 times) : tap the switch to select mode group 9 (1%、10%、50%)”

Whereas on other biscotti-like 12/13 mode lights, this is the corresponding description:
“sub-option 1.8 (normal-flash 8 times) : tap the switch to select mode group 8(0.1, 1, 10, 50)”

The discrepancy in index is due to another mode being slipped in. But where is 0.1% mode? Is that removed from the t4?

Thank you!

T3 & T4 do not have a 0.1% mode. IIRC the reason is that no regulator chips could be found with high enough precision for that.

What’s the status of 17mm boost driver?

Hi, do the lighted tailswitches work well with the s21a b35am driver and the 22mm xhp70 driver? I would probably upgrade the spring, but apart from that, is it compatible with those boost drivers?

Yeah, they work perfectly fine.

When the S2+ with MAO will be sold, i want to get one with the 519a 4500k and de-dome it. I really like the beam profile of my S2+ with the 219b 4500k and the 60 degree TIR lens.
But i’ve read that the TIR lenses are not optimal for a de-domed 519a.

What reflector should i go for, OP or SMO?

I had an S2+ with a dedomed 519A and a 45 degree beaded TIR and it was lovely.

Now that you mention it, i also have the 45 degree lens on my 219b S2+. I really love the beam.

Thank you, i will try it with the de-domed 519a as well.

Simon, will you consider selling the T3 host alone?

I really hope that Simon will someday make a Convoy flashlight in a similar case! (2*21700 and 3*Nichia 519a); (2*21700 and 3*XHP70)



Its look beautiful but there’s the issue of temperature.

What temperature problems would there be ?

Hopefully with better aesthetics, the blocky design isn’t really my thing, and it must not feel really good in the hand either.

Thanks for you opinion, I agree that’s it’s simpler for charging with 2P configuration, and if 30~35W is enough then yeah a simple MP3431 boost driver will do.

May depend on the model of TIR optic. No issues with the 519A and beaded optics in the S21D - the beam is fantastic.

Got the replacement (new model) buck driver for my S21D! Unfortunately my light was lost/stolen a little while ago, so I guess I’ll be keeping it for a future project of some kind.

I can’t find data about efficiency of T3 and T4 drivers (13 modes) for each battery type.
Simon wrote efficiency is >90% but I assume it’s for NiMH batteries?
Do they use linear regulators for 14500?

Anyway, I’d like to know efficiency of:

- T3 with NiMH: >90%

- T3 with 14500: ?

- T4 with 2*NiMH: >90%

  • T4 with 2*14500: ?

Review of the Convoy S21E with Nichia 519A 5700k emitter.

@g_damian, the T3/T4 are using 92% efficient buck boost drivers.

Thank you :slight_smile: