Review: warm white Q series XR-E P60 dropin

Yeah but 4.2 min. voltage ?

Very nice! Frontpage'd and Sticky'd. I really like that warm color also, I wish it was more common.

Suggestion: Have you thought about putting the Pros and Cons more towards the top so they are visible in the teaser on the frontpage?

Thanks for the review!

I have a Jade Master bought from KD with warm tint and an XR-E led. It realy has a pleasing warm colour and much brighter than I thought a warm tinted XR-E would be. These definitely aren't warm P4s everyone calling just too dim. Or are they? Solarforce has a warm drop-in even with a lower price than this but it could be something with a lower bin too.

Too bad I bought the KD Q35A drop-in some weeks ago, it doesn't have proper mode memory. But I wasn't that impressed of warm white anyway, atleast that one was very yellow/brown, neutral would probably be nicer.

1.25a on the usually makes a 1A (80% efficiency) or 1.06A (85% efficiency) on the led so very much in the defined range for an XR-E.

A little bit but if you take into account driver losses not much overdriven i guess.

Memory sets quickly. It works similarly than a Ak-47 would.

Yes, apart for the henious soldering job the assembly and the emitter base centering and so on was A+.

OK, you're right about this. I should have used the power output/input efficiency. But we still can't know the output current because of the buck circuitry. It may be loosing its %30 power in the coils and not giving any more than %80 of the input current afterall.

A totally ideal buck driver should give 1.42Amps on the led for 4.2V input, on the other hand :)

I wish I had confidence that it would actually come in as a 3-mode, not a 5-mode setup.

When you are "playing" with your flashlights, those blinky modes are just an annoyance to get past.

But I like the low cost options of non-XM-L emmitters, I've ordered a couple of XP-G's, wish I knew more about the specs on all the available dropins.

Is there a thread somewhere that summarizes the strength's and weaknesses of different dropins?

I swapped the driver later today to a Ak-47 in Lo-Hi mode only. I hope it will hold fine at 1040mA as that's what i'm drivng it now.

So many interesting emitters out there, I feel like I need to take an engineering course on them...

Lately I've been fascinated by the OSRAM LED, ordered my first light with that one in it yesterday.

I started a new thread requesting information about various emitters, if you are interested you can find it here:

http://budgetlightforum.cz.cc/node/2019

PWM visible on mid/low?

I hardly notice PWM and surely did not on this one. Can't tell anymore since i swapped the driver to an Ak-47 which i modified to 700mA (killed a 7135amc chip) and brdiged to 2 mode low and hi. Less bright but still nice. Probably just playing it safe but i had a feeling it would survive at 1A but then i gain i have nothing to back that up scientifically. I wish more emitters were available in warm white and neutral.

wrote:

"Nice find, I've been looking for something for my unbored 6P. I bet it is even brighter on two RCR123'


I haven't found a budget XML yet that can handle the extra voltage."

Solarforce do a 6V XM-L drop in.

http://www.solarforce-sales.com/product_detail.php?t=RB&s=40&id=191

True, but I bet a XML could yank three or four dollars of batteries out of you pocket in an hour pretty quick on primaries.

Retail price for CR123's in the UK is about £8 each so about $13... you could by a new XM-L flashlight every hour instread if you were foolish enough to pay those prices :P

Of course anyone with any sence just orders them online...still it works out much better to use rechargables.

Aren't supposedly all the budget drivers crammed with the linear regulatorc AMC7139 tolerant for up to 6V? I've read that somewhere for the AK-47 at least... Heavily unconfirmed!

What sort of current would these budget XM-L's & XP-G's draw on 2 x 123a ?

Update. Mine came 1 mode only. Still has a buck driver though.

Sorry to necro this thread, but I am consider getting this drop-in. It’s been over a year, and looking back, has it been good? How is the tint? Brownish, or yellowish? Greenish? Is it reliable? Recommended? I planned to use my RCR123s with it in a C1 host maybe. Would neutral white be better?

I can’t find many warm-colored Q5s.