Q8, PMS SEND TO THOSE WITH ISSUES BLF soda can light

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teacher
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nvanlaar wrote:
Hallelujah! It turns a rookie carrier didn’t know to put the package box key into my mailbox… Facepalm So my two lights and batteries were locked up all long weekend… Both lights are clean, no damage to anything, and all screws match and are not stripped or anything. Unit 1 works well. I think I drove my wife a little crazy – ramp up, ramp down, ramp up, ramp down, etc. Big Smile Charging batteries for unit 2. I’m sure it will be fine. Great work crew!! What a deal for $40!
Good… glad it worked out in your favor nvanlaar!! Wink

Where did you get that little folding chisel/pry bar in your pictures?? I sure do like the looks of it…..

      You never know how a horse will pull until you hook him up to a heavy load. / Paul "Bear" Bryant ~/~\~ "Slow is Smooth, Smooth is Fast"

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Zulumoose
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JasonWW wrote:
[ I was trying to suggest tools people may already have.

I have never intentionally bought one, but have 3 or 4 lying around because they often come with a set of drill bits, same goes for centre punches, more people have them than would ever think to buy one deliberately.

Beam me up!

fuzun
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I have received the Q8.

When in max brightness mode, after 3 seconds it blinks 3 times and goes to lower brightness. Same thing happens at lower brightness until it gets three more lower brightness mode.

It is not related to temperatures because it happens when it is cool as well.

Maybe it is related to battery? This did not happen at full charge. But this is now happening with 3.4Volt charge. Batteries are 4 button top 18650-30Q

The Miller
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Yes that is normal, Low Voltage Protection Smile

Just finished sending PMs to those with issues, IF YOU HAVE NOT GOTTEN THIS PLEASE PM ME Smile

DB Custom
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My third Q8 beat the second to California, the 1st is still lounging around in Sweetwater, TX. Funny, this 1st one must have an affinity for water as it first hung out in Palm Springs before taking up temporary residence in Sweetwater. Hmmmm, a dive Q8? lol

I have three pairs of scissors I use at the bench, the smallest has blades 1 3/8” long, the next 2 1/4” and the largest 3”, the two smaller ones have very sharp pointed ends. So even a small threaded hole is not a problem to debur with the finely ground steel blades of quality shear’s. I use scissors to strip wires, cut wires, clean epoxy (cured) off a toothpick so it can be used repeatedly and whatever else they seem relevant for. Wink

Dale

giorgoskok
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Dale , can we bet on the Q8 race ? Haha Big Smile

ElginAgain
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The Miller wrote:

ElginAgain that does not sound good, what is your level of soldering?

I’m fully qualified for through hole soldering. My experience level with SMD is limited to building Reprap electronics using solder paste & hot plate. Then I’ve also repaired a Nikon flash by replacing a SMD diode and inductor. So you could say I’m a novice with SMD work.

I’ve got a nice Weller Digital Iron. I’ve been wanting to buy a hot air rework station, this might be just the project I needed to justify the purchase.

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fuzun wrote:
I have received the Q8. When in max brightness mode, after 3 seconds it blinks 3 times and goes to lower brightness. Same thing happens at lower brightness until it gets three more lower brightness mode. It is not related to temperatures because it happens when it is cool as well. Maybe it is related to battery? This did not happen at full charge. But this is now happening with 3.4Volt charge. Batteries are 4 button top 18650-30Q

There will be a voltage sag effect. Oh boy, think we talked bout this wayyy back. I'm not sure if was seen as high as 3.4V, possible though. Others may know better than I, but it sounds like you have good cells there, so may be odd to occur on 4 good 30Q BT's. I don't know off hand what 3.4V represents in terms of percentage capacity, but thinking it's bout 25%. The sag would have to be in the 0.4V range to get what you are seeing, and that's a significant drop in amps draw if it dropped 3-4 times before stabilizing. Effectively it should work the same as any other LVP enabled FET based single cell, single LED light.

Is your Q8 totally stock? If the springs are bypassed, the sag would probably be worse than normal I'd think.

JasonWW
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fuzun wrote:
I have received the Q8.

When in max brightness mode, after 3 seconds it blinks 3 times and goes to lower brightness. Same thing happens at lower brightness until it gets three more lower brightness mode.

Maybe it is related to battery? This did not happen at full charge. But this is now happening with 3.4Volt charge. Batteries are 4 button top 18650-30Q


3.4V is practically dead. Like 85% down.

When you put a heavy load on the batteries like going to max output the 3.4V sags down to below 3v triggering the low voltage protection.

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware, lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70, Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

9 NarsilM user videos including GT 

Texas_Ace BLF Calibrated Lumen tube

 

Etex
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Maybe Sweetwater, Tx after dark, needed a little help with the roundup.

https://youtu.be/BDUXrDapPtM

DB Custom
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It’s like that isn’t it George? This has been an interesting shipping experience, all the lights I have and it’s never happened like this before. Oh, sure, I’ve had one go to Dallas, about 2 hours North of me, and then go to Florida and come back, but that was a zip code mishap. This is a whole new thing, all the hand-offs…

Dale

giorgoskok
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DB Custom wrote:
It’s like that isn’t it George? This has been an interesting shipping experience, all the lights I have and it’s never happened like this before. Oh, sure, I’ve had one go to Dallas, about 2 hours North of me, and then go to Florida and come back, but that was a zip code mishap. This is a whole new thing, all the hand-offs…

Well , at least it stayed in the US , Dale … I guess they are close !

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JasonWW wrote:
fuzun wrote:
I have received the Q8.

When in max brightness mode, after 3 seconds it blinks 3 times and goes to lower brightness. Same thing happens at lower brightness until it gets three more lower brightness mode.

Maybe it is related to battery? This did not happen at full charge. But this is now happening with 3.4Volt charge. Batteries are 4 button top 18650-30Q


3.4V is practically dead. Like 85% down.

When you put a heavy load on the batteries like going to max output the 3.4V sags down to below 3v triggering the low voltage protection.

Yeah, using HKJ’s info as a guide, 15% capacity at 3.4V is pretty optimistic. 3.4V is anywhere between 0% and 13%, for the batteries he measured… that’s at 1A. Even less capacity at higher amps. So effectively unable to provide max power on the Q8.

http://lygte-info.dk/info/BatteryChargePercent%20UK.html

burmeses
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Can I get the Code for the BLF Q8? How much is it supposed to cost for us?? BG has it listed at $99.99

Illumenated
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Hey guys two questions…

1. Is this a compatible charger for these high drain 30Qs?

(I already own a Liitokala but my buddy has the Nitecore charger and needs to know if he needs a new charger for his new 30Q batteries)

2. What mm bit do I need to fit into the threaded tripod hole on the side of the Q8? And with the newer/corrected version of the Q8 will I still need to hack off part of the bit in order to make it fit into the hole?

Thanks in advance…

DB Custom
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Within the State of Texas, yes, on the first one, but still about a 3 1/2 hour drive away, or roughly 200 miles. Who knows where it’ll go next though.

Dale

RapidLux
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1. Yes
2. 1/4”

RapidLux
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burmeses wrote:
Can I get the Code for the BLF Q8? How much is it supposed to cost for us?? BG has it listed at $99.99

Get a code by registering at m4dm4x.com.

The Miller
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ElginAgain good
Did you check the driver?

burmeses wrote:
Can I get the Code for the BLF Q8? How much is it supposed to cost for us?? BG has it listed at $99.99

You can ask BLF user M4D M4X for a code to bring the $99 down a lot, maybe other people like Freeme and trevi have codes as well idk.
Welcome to BLF!
Tom E
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SoCalTiger wrote:
JasonWW wrote:
fuzun wrote:
I have received the Q8. When in max brightness mode, after 3 seconds it blinks 3 times and goes to lower brightness. Same thing happens at lower brightness until it gets three more lower brightness mode. Maybe it is related to battery? This did not happen at full charge. But this is now happening with 3.4Volt charge. Batteries are 4 button top 18650-30Q
3.4V is practically dead. Like 85% down. When you put a heavy load on the batteries like going to max output the 3.4V sags down to below 3v triggering the low voltage protection.
Yeah, using HKJ's info as a guide, 15% capacity at 3.4V is pretty optimistic. 3.4V is anywhere between 0% and 13%, for the batteries he measured... that's at 1A. Even less capacity at higher amps. So effectively unable to provide max power on the Q8.

Look at the true 30Q discharge curve at like 3 amps here: http://lygte-info.dk/review/batteries2012/Common18650comparator.php

3.4V is at about the 2.1 Ah mark, so 2.1 Ah out of 2.86 Ah capacity is about 73.4%, so 26.6% capacity remaining. This is directly off a Samsung 30Q flat top test, so not sure if this is all apples to apples, but this is how I've thought it could be calculated.

nvanlaar
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teacher wrote:
Good… glad it worked out in your favor nvanlaar!! Wink

Where did you get that little folding chisel/pry bar in your pictures?? I sure do like the looks of it…..

I got it on GearBest. It’s a Fura. Supposedly m390 steel… It’s dogtag sized.

“Facts don’t care about your feelings.”
~Ben Shapiro

manithree
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burmeses wrote:
Can I get the Code for the BLF Q8? How much is it supposed to cost for us?? BG has it listed at $99.99

Since I just looked this up for a friend, I’m assuming M4D M4X doesn’t mind since he posted this openly, but you can just go here:

http://budgetlightforum.com/comment/1201349#comment-1201349

Price is $46.50 while that offer is valid.

joechina
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My second Q8 arrived.
This time I payed for faster delivery.

My 1th Q8 with
Air Parcel Registered, free shipping
sent: 2017-09-10
arrived: 2017-09-26
16 days

My 2th Q8 with
Priority Air Mail, paid
sent: 2017-09-26
arrived: 2017-10-13
15 days

OK, mathematical it was faster. Kinda :/
Thought it could reach the quick delivery times people reported.

Maybe I disect it Sunday

joechina
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yuhsin91123 wrote:
somebody convince me why to buy this flashlight lol And can I have the code for this light…?

M4DM4X here in the forum has a new coupon, I think it’s $45

The original groupbuy is over, after 1.5 years!

Zulumoose
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Quote:
3.4V is at about the 2.1 Ah mark, so 2.1 Ah out of 2.86 Ah capacity is about 73.4%, so 26.6% capacity remaining. This is directly off a Samsung 30Q flat top test, so not sure if this is all apples to apples, but this is how I’ve thought it could be calculated.

Those measurements are under load, wheras the 3.4v in question wasn’t measured inside the running Q8, it was the state of charge of the cells as per the poster, so likely measured after taking them out.

Beam me up!

Illumenated
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RapidLux wrote:
1. Yes 2. 1/4”

Thanks, RapidLux

Tom E
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Ahh, ok. Anyway in HKJ's reviews to find out the "not under load" levels? These things will vary from cell to cell it seems like. I've seen discharge curves vary nearing the end. 

The Miller
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I think it is awesome, had to do work the other day
blink blink blink lower
blink blink blink lower
blink blink blink lower
blink blink blink lower
I ramped it up a little and had light more then enough to see for the duration of the work at least half an hour
It is so good to be able to put lumens out at steady rate sometimes, I hate lights that keep on blinking and detest my Olights that just go off and won’t turn on.

DB Custom
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My 1st Q8 is continuing it’s water theme, it’s now surveying the flood damage in Houston. Smile

Dale

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I got one Q8 that sat in LA customs for 5 days - never saw that before either, weird thing goin on. Hurricanes, fires? Earthquakes?

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