【convoy】H4 and B35AM options are updated

Okay, so a 50E achieves 7.25A and gets 1135 lumens at 30 seconds. Now if using a 40T at 8A I get the same lumens. Djozz told me that 7A should be the limit and it looks like he’s correct by the numbers I’m seeing

I’m not seeing any improvement over the 1mm version

Turns out I damaged the led at the beginning when I shorted a wire on the reflector turning purple.

New led at 7A gets 1300 lumens. Increasing to 8A only gets 13 lumen gain. I’ll be driving these with a 50E in Convoy’s ramping driver for 7A

Any update on Convoy STB 90.2? What amp driver will this be paired with?

I want to compete with Noctigon K1 which costs $139.99.

It still won’t get the same throw unless it’s installed in the L6

Hello Simon,

Can you confirm battery tube diameter for L21A? Is it 22mm or just 21.5mm?

I just measured and the inner diameter is 21.9mm which is mostly likely 22

96% efficiency, little heat generation

18A for SBT90.2
the host is in production

Some are 21.5mm ,some are 22mm

Can I specifically ask for 22mm, if I make an order?

I would also ask another request:

Could you please make a new item in the store? Which is same to this: 40.38€ |Convoy L21A mit luminus sst40, kupfer DTP bord und ar beschichtete innen, Temperatur schutz management, bis zu 2300lm|Taschenlampen| - AliExpress , but with these differences:

- emitter choices should be: Samsung LH351D 5700K, 5000K, 4000K

  • driver max current: 5A (but other driver specifications are the same)

Yes, but the SST-20 DR has a very low forward voltage which you need to use a special driver. If you use this driver it’ll burn through most of the battery voltage very quickly to run more efficiently at a lower voltage.

If it’s actually an 8A buck driver the excess voltage is not wasted. However, a true 8A buck driver will require a very large inductor and probably be quite expensive compared to most Convoy drivers so I wonder if something is lost in translation here…

Okay, I’m not really familiar with a buck driver. There’s a thread all about the different types, I should go have a read up

The short answer is:

buck driver turns excess voltage into current
boost driver turns excess current into voltage

The 8A driver does seem to have an inductor but is it big enough?

It is also around 2x more expensive compared to linear FET or 7135 drivers.

Edit: I just remembered that I asked him about this a month ago.

Looks like spaghetti or pizza sauce.

Good question.

I'd like to know as well.

I think it’s conformal coating.

Didn’t realize it was already available. Yes it does look like a buck driver.

Considering it’s only on and around the inductor I would guess it’s to reduce high pitched noise they can sometimes have. “Coil whine”

In convoy XHP35 12V boost driver is really quiet unlike the switch...


That red goo is actually glue that holds components while soldering .

A few things landed and tested from Convoy, all really excellent thanks Simon!

L21A XHP35 HI 4000k : Really nice quality. Light is strong and pleasant.

S2+ with W2 Green : This is so much fun, it gets hot on high :wink: Great power to weight ratio. Decent throw and spill.

Upgrades for C8: LH351D 5000k and OP Reflector. Such an awesome upgrade for my C8. Sliced the dome and it has decent throw, really nice color, noticeably warmer than 5000k, really awesome all rounder now!

only 22mm 6A driver for L21A ,the current is too large for LH351D