ThorFire BD 04 $10 Amazon

I wasn’t disappointed with the output.

I’m down. The bike light that came with my bike is pathetic (maybe 75 lumens). If I hate it, I’ll just keep it in the desk at work for muggles to borrow and use the mount to put a proper light on the bike.

No the Convoy clips are outstanding. I have tested BD01 and 06 and no sign of weakness (at least 4 charge cycles a day and 100 on off presses with clip and without
For months now and still working like new.
I see these as ideal muggle lights.

Thats good to here because i am giving these away to Muggles

Ordered one… do not have a good quality zoomie.

This review says it comes with a 4.35v battery. Does the light charge to 4.35v or 4.2v? I ordered one so I guess I’ll find out soon enough.

Got mine today.

Make sure you take off the cardboard pad on battery… And it’s adhesive left behind.
Make sure you put the battery in backward, POS to switch.

Yeah I didn’t read the Destructions. Got the insulator on the battery figured out fast but the polarity took a multimeter to test switch and battery current (Good). Full disassembly and a bench power supply to figure the polarity was switched on the driver (GRRR).

Yuck on the tint and huge emitter square focused tight. Feels light and cheaply made with no battery installed.
Battery is the Samsung ICR 30B, 4.35V. Out of the box battery voltage is 4.21V DC. Will see what the supplied charger does.

Mine hasn’t even shipped yet (I don’t have Prime though.) Supposedly the head is glued in -> do you mind seeing if you can take a look? Thanks!

Yeah,
Bezel is glued… I got it off with bare hands though.
Pill glued in tube, Pliers worked easily. Pliers on pill tube in bare hand, no problem.
Glue is soft, not crazy glue.

Light by itself, I do not think would be worth $10
However being rechargeable and coming with a decent quality battery and charger makes it worth it.

Ran light on High for about 20min, hooked up charger. Light turned Green, removed and tested battery voltage on 2 different DMM. 4.04V DC. Long way from the 4.35V battery rating. Have battery in my 4 bay now.

Does anyone have the similar Convoy model for comparison?

I’m surprised they send a 4.35v battery if it only charges to < 4.2v. Is the driver easy to take out and does it have an Attiny13? Since it comes with disco modes I’d prefer to flash the drive or drop another one in.

Thanks

Thank you :+1:

& I guess the charger coming up short is still much better than the cell voltage coming off high. At least I wouldn’t have to worry about it being used. If the one I have coming does the same thing then I’ll just stick pack pulled 4.2v 18650 cell in there & use the included cell somewhere else…

Driver is 17mm with a brass shim soldered on to make the 18.9mm press fit. Pill has a full shelf for emitter. Driver is Attiny13 and actually surprised me with 7135*4 @ 380mA.



Thanks for the info on the driver, it should be straight-forward enough to flash it. I didn’t know that the Samsung 30B’s came in yellow. Is that just an effect from the flash or is it truly yellow?

Flash went off
its light green

I got two in today. Same thing - got the bezel off with grippy gloves - no luck on the pill yet. Glue is rubbery - nothing like a thread lock type.

Output Measurements on a SANYO GA cell @4.18V:

Hi: 371 lumens (@30 secs), Med: 119 lumens, Lo: 19 lumens, throw: 7.1 kcd

Tint is true blue cool, but doesn't look bad with a zoomie.

If you flash the 13A, just be aware of the R1 resistor value for LVP - not sure what R1 value is. Could add a cap for OTC, or use brownout detection.

Driver replacement is tricky - spring is Batt- and the ring around the spring is Batt+. Best to mod up the stock driver. A FET is not so good in this light because all the extra runs of battery leads, like Batt+ coming from the tail to the driver, but looks like a decent copper strip in the carrier.

HKJ's tests on the 30B cell shows about 2500 mAh charged to 4.2V, so not bad even at 4.2V. At 4.35V it does about 2900 mAh.

It's a quality light, I believe worth $10 easily for the light alone - real nice SS switch, looks like a decent plastic lens, small flood, not quite round, but not much in artifacts zoomed or not, also a battery worth another few bucks - quality Samsung cell. I'd definitely add maybe 2 7135's or so to give it more power, and re-flash with brownout detection - might replace R1, not sure, and worth look'n at swapping the LED - certainly for something neutral and/or something more throwy.

Is this a XM-L2 led? Might have to get a couple.

Yes.

Thanks,
I ordered 2, and they have already shipped. Gotta love Prime.

These are the glove I used to break open the bezel:

This is what I used to get the pill out:

Driver prys out easy:

This white retainer was maybe the most difficult thing to get out - poked it out from a LED wire hole from the driver side, then pryed off with a thin screwdriver tool. Very hard plastic, a pain to pry out - some damage to the aluminum ridge that I can sand out:

Lot of thermal grease:

Cleaned up:

The R2 resistor is 19K, wired after the diode. The cap is also after the diode. The clearance over the driver is tight but think piggyback 7135's should fit. The pinout wiring is standard - voltage dividers on pin #7, 7135's on pin #6, outer ground ring connected to the spring for Batt-.

Standard 16mm PCMCB, thin though - think it's 1.0 mm.

Got my 4 today, will be great Christmas presents! All four work properly.