Missed the Yezl Y3 GB? No worries! Check this out! :) (you can buy separate extension tubes too)

Ordered one. This will be my first Yezl Y3. I think this will be a better hold in my hand than the Small Sun ZY-T08.

Thing with these lights is the batteries and charger cost more than the lights. Ordered one with tubes, thanks for the discount the. I think going to let my in-law buy the batteries. I know giving a gift that doesn’t work is strange, but I can’t get myself to buy new batteries!

Might change my mind though… I’m already 6 batteries behind :slight_smile:

Thanks to the for setting this up. I did miss the other GB from GB.

Ordered one plus two tubes. My brother-in-law has been wanting a good cheap thrower to wow his Boy Scout troop on night hikes to spot animals, so he got in on the deal also.

Did I read a thread here about some potential slow shipping with GearBest? I never ordered from them before.

Shipping from GB has been decent for me. Not as fast as FT or IOS, but not like some people experienced. I’m not sure if it was just people outside the USA, but some people had big shipping delays.

Is it a bad idea to use this light with 10 extension tubes?

Depends what you want to use it for.

Killing spiders on a high ceiling, fine.

Very nice idea, I think the driver would like to get 42 volts…

How many volts can it handle?

I ordered one with 2 tubes. Has anyone tried 4 or 5 * C batteries? I am thinking about it. I have two other 3 * 26650 lights that run off C batteries. Not as well as 26650 but good enough in an emergency

Could always use C high cap NiMH.

It’s sold in up to 3s configurations. I’d assume that 12.6v is the highest sanctioned input voltage. I haven’t made a list of QX9920 based drivers, but this is what I came up with just now:

It’s been mentioned that the light functions on 1s, although I don’t think anyone has tested to see where it drops out of regulation. Let’s assume 3.65v, since that’s the XM-L2 vF at 3A from djozz’s chart plus the 0.25v sense voltage of the driver. Everything above that should regulate. This is a buck driver, so higher input voltages will require lower input currents. If you want to use alkaline in a pinch, try to keep the voltage as high as possible (within reasonable limits).

With only 4*C (alkaline) I don’t think “High” would work for very long. Maybe about 20minutes. Ref HJK’s Panasonic Pro Power C review here. In order to get approximately 1hr of battery life in High mode I think you’d want 8*C.

You could also consider using 4* Lithium AA with a sleeve. If you made caps for the sleeve, that could easily be stored alongside the light with batteries installed in it for an emergency. I think that 4*AA (Lithium) could do almost an hour in “High”! See HKJ’s Energizer Ultimate Lithium AA review here.

Oops, I forgot to account for dropout voltage while doing the 4* runtime calcs. Lithium is probably about the same, 8*C is the same as well, but 4*C may suffer a little. These are all quick and dirty things anyway, back-of-the-napkin type math.

I could still use it with 3 real batteries and a bunch of dummies though, right?

Sure. Or one big dummy, that’s probably what I’d do in your shoes. Less connections is better, and while you can’t do anything about the plethora of connections between the extension tubes you can do something about all the end-to-end dummies. If you intend to make it exceptionally long, try for a lightweight dummy. Otherwise the combination of length mismatches and weight could potentially overpower a tailspring, giving contact issues. You’ll be a better judge of that with everything on hand though.

I just ordered another extension for a total of 3 extensions + Y3. Figure that 5 C size NiMH batteries will fit. I have about 10 Tenergy C size 5000mAh from the fire sale a couple of years back. 650x4=2600 to 500×5=2500

I have two extensions coming, will that accept C batteries, or do I need to order a 3rd extension to get the correct length?

How many C-cell batteries do you want to fit?

No particular number, but I am curious of how they match up with various numbers of extensions.

4 C cells (200mm) are about the same length as 3 unprotected 18650/26650's (195mm). So 2 extensions on a Y3 should hold 4 C cells. Three more extensions to hold 8 C cells.

Thanks, that gives me an excuse to pick up some C rechargeables.