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

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Flashy Mike
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Tom Tom wrote:
E.g. if MCU pin is left floating tri-state (and R3 has become disconnected), only the tiniest leakage current would be enough to charge the FET gate just sufficiently to turn it on very slightly.
I suspected this also but according to Toms’ code the pins for FET and 7135 are always configured as output.
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akovia wrote:

I did find this in my searching as well if anyone is interested in a static ring. I like that it’s stainless steel.


https://www.aliexpress.com/item/SmallRig-Standard-1-4-20-Threaded-Screw-...


This one appears to be the same – but less expensive:
https://www.banggood.com/14-Inch-Round-Ring-Digital-Camera-Screw-Bolt-Fo...
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Flashy Mike wrote:
akovia wrote:

I did find this in my searching as well if anyone is interested in a static ring. I like that it’s stainless steel.


https://www.aliexpress.com/item/SmallRig-Standard-1-4-20-Threaded-Screw-...

This one appears to be the same – but less expensive: https://www.banggood.com/14-Inch-Round-Ring-Digital-Camera-Screw-Bolt-Fo...

I bought one of these for my MT-01 and I like the smaller size compared with some others I bought recently. It sits reasonably high off of the light but the thick rubber washer works well to take up the slack when you screw it in. I’m going to buy two more for my Q8 collection for sure.

DrHook59
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Flashy Mike wrote:
akovia wrote:

I did find this in my searching as well if anyone is interested in a static ring. I like that it’s stainless steel.


https://www.aliexpress.com/item/SmallRig-Standard-1-4-20-Threaded-Screw-...

This one appears to be the same – but less expensive: https://www.banggood.com/14-Inch-Round-Ring-Digital-Camera-Screw-Bolt-Fo...

That’s because it’s aluminium, not stainless. I think I’d rather have the stainless myself…. Big Smile

Flashy Mike
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DrHook59 wrote:
That’s because it’s aluminium, not stainless. I think I’d rather have the stainless myself…. Big Smile
Ok, this would explain the huge difference in price. But in “Item specifics” the Aliexpress seller says “Material: Aluminium”.
Perhaps the title (which says “steel”) refers to the keyring only …
Prodeje79
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I’ve been out of the game for awhile. Mine arrived this week and still in the box for now. I located my flashlight stuff today to see what I had.
I have a XTAR SP2 charger and no batteries.
Is this charger OK besides only having 2 bays? Else maybe I will go ahead and get the LiitoKala Lii-500 (assume thats the same as the LI500 you note)

I’ve been searching this thread regarding battery options. Is there a protected option?

I am in the US, and I’d prefer Amazon if at all possible for Prime / Prime now! Any links or more recommendations appreciated. I guess I can patiently wait for my batteries.

I may just go with the one linked for Samsung INR18650-30Q 3000mAh Unprotected Button Top http://www.mtnelectronics.com/index.php?route=product/product&path=59_88...

JasonWW wrote:
ARMS.AARON wrote:
ALCON,

Q8 arrived….this thing is qualiteeee! Just need cells and charger quick!! I’m a Newbie! Facepalm

Need Cells for both the Q8 and the BLF GT. Total 16 cells & charger. Best cells I can buy. Cash

Recommendations welcome, or just a link. Big Smile

Respectfully


Nobody knows what country your in, but if the US, then there are good deals on the 30Q batteries. They are very popular. Then the Liitokala LI500 charger does 4 cells at 1 amp each, so that is another very popular choice.

Ps, I’d get 2 of those chargers so as to save time.

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> tripod screw

Use the “Search Within Thread” button at the top of the page.

> FastenR-Tripod

$_24.95_?!

You can find what appears to be that same product for less than $2 at aliexpress, and there are stronger-looking alternatives
Look in this thread with the search feature

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

Sorry to bring up on old post, but I'd like to add some more facts to this. You referenced a worse case example that's not applicable to the Samsung 30Q. Here's the 30Q compared to the AW 2600 at a low draw of 0.2A, so little voltage sag:

Using this chart, the 30Q still has 20% of capacity remaining at 3.4V at a low draw. The AW, well, has a really bad drop off - not very common.

That page from HKJ is apparently very old, using cells that maybe were popular 4-5 years ago, and they have different discharge characteristics. Same with the Pana B - it has a steep drop off at the end.

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[quote=Prodeje79]

I may just go with the one linked for Samsung INR18650-30Q 3000mAh Unprotected Button Top http://www.mtnelectronics.com/index.php?route=product/product&path=59_88...

I buy pretty much all of my batteries from Mountain Electronics. Very hard to beat his pricing especially since he is located in America and the shipping is quick. Richard is a long time blf member and stands by his sales. Also your not going to get fake or counterfit products from his website. Now as far as batteries go I personally buy only Samsung 30qs for all my 18650 flashlights. They are always at or near the top of the performance curve regardless of what flashlight you need them for. They are typically budget friendly and have a nice high 3amp hour reserve of power.

I hope this helps

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Love that thermal imaging photo, thanks ERDOS! Smile

Prodeje79
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I appreciate the response!

What about a protected option? I think the Samsung 30q isn’t protected?

Joey Adams][quote=Prodeje79 wrote:

I may just go with the one linked for Samsung INR18650-30Q 3000mAh Unprotected Button Top http://www.mtnelectronics.com/index.php?route=product/product&path=59_88...

I buy pretty much all of my batteries from Mountain Electronics. Very hard to beat his pricing especially since he is located in America and the shipping is quick. Richard is a long time blf member and stands by his sales. Also your not going to get fake or counterfit products from his website. Now as far as batteries go I personally buy only Samsung 30qs for all my 18650 flashlights. They are always at or near the top of the performance curve regardless of what flashlight you need them for. They are typically budget friendly and have a nice high 3amp hour reserve of power.

I hope this helps

The Miller
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Well I gave my son a Q8 for his birthday, loaded with Panasonic 3400 protected
Dang bright
(lucky him, his flat parts of the tube and head align perfect)

DB Custom wrote:
Love that thermal imaging photo, thanks ERDOS! Smile

yeah very cool. thanks!

JasonWW
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Prodeje79 wrote:
I’ve been out of the game for awhile. Mine arrived this week and still in the box for now. I located my flashlight stuff today to see what I had.
I have a XTAR SP2 charger and no batteries.
Is this charger OK besides only having 2 bays? Else maybe I will go ahead and get the LiitoKala Lii-500 (assume thats the same as the LI500 you note)

I’ve been searching this thread regarding battery options. Is there a protected option?

I am in the US, and I’d prefer Amazon if at all possible for Prime / Prime now! Any links or more recommendations appreciated. I guess I can patiently wait for my batteries.

I may just go with the one linked for Samsung INR18650-30Q 3000mAh Unprotected Button Top http://www.mtnelectronics.com/index.php?route=product/product&path=59_88...

JasonWW wrote:
ARMS.AARON wrote:
ALCON,

Q8 arrived….this thing is qualiteeee! Just need cells and charger quick!! I’m a Newbie! Facepalm

Need Cells for both the Q8 and the BLF GT. Total 16 cells & charger. Best cells I can buy. Cash

Recommendations welcome, or just a link. Big Smile

Respectfully


Nobody knows what country your in, but if the US, then there are good deals on the 30Q batteries. They are very popular. Then the Liitokala LI500 charger does 4 cells at 1 amp each, so that is another very popular choice.

Ps, I’d get 2 of those chargers so as to save time.


The SP2 is a good charger, but the 2 bays is very limiting. You’d have to do 2 sessions of 4 hour(?) charges for the Q8. If you dont mind the wait of monitoring them the whole time it’s charging, then it’s probably fine for a Q8.

The Lii500 will do all 4 at once, so it cuts your charging time in half. This is definitely a better charger if you get a GT where you have 8 cells.

You could do 2 charging sessions at 1A on the SP2 for the Q8, then at the same time, 2 charging sessions on the Lii500 at 1A for the GT.

It’s just time dependant. How much do you like waiting?

I’ve got 3 chargers so that I can charge all my work light cells in one small 3 hour (or less) window once a week. I hate waiting.

People have reported that the Q8 works well with protected cells. They cost a lot more, though. About $10 each. Richard over at Mountain Electronics carries some of the best. His 3400mah NCR18650B cells actually say they can charge at 2A. If that’s correct, then your SP2 charger will let you do that for faster charge times. (Most good 18650 cells only recommend 1A to 1.7A charging rates). It’s output is also good for at least 7 amps. Well above what the Q8 needs when you use 4 cells.

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The Miller
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Lii402 is simpler and cheaper
I am waiting for a $8 deal then I get one to have as spare, it is four bay but without fancy screen and functions

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Prodeje79 wrote:
I’ve been out of the game for awhile. Mine arrived this week and still in the box for now. I located my flashlight stuff today to see what I had. I have a XTAR SP2 charger and no batteries. Is this charger OK besides only having 2 bays? Else maybe I will go ahead and get the LiitoKala Lii-500 (assume thats the same as the LI500 you note)

Assuming the charger still working fine, according to my experience (use it mostly for 26650), SP2 is good charger.

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Zulumoose wrote:
You shouldn’t be carrying the Q8 around in a pocket, any fool can see that with the correct D ring installed it is meant to be a keyring light.

Sorry, I can’t agree with you about this. I try in my keyring, but don’t feel it is the right size as keyring light Blushing

alternety
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I am going through my second light. So far there are a few nicks on the bottom edge of the tube that left burrs. Sanded those. A couple of burrs around the threaded holes under the spring PCB. Mine have not been chamfered. Sanded them.

The edges of the holes for the batteries. On the bottom, half of each hole has a raised edge like razor blades. I will be sanding that and looking at my first light again. I had not removed the spring board on that light. These edges should never come in contact with the batteries; but I would prefer they were not there. Just in case the PCB is removed by someone who is not anticipating sharp surfaces. A couple of places on the top of the holes also need a bit of a touch up. Sharp lips that can contact the battery cases.

TF might want to take a look at the state of their tooling cutters and/or programming of the CNC.

ISO
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Upploaded some chargers so you can see some them

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The Miller wrote:
Lii402 is simpler and cheaper I am waiting for a $8 deal then I get one to have as spare, it is four bay but without fancy screen and functions

I just ordered one yesterday for $5, I think it was Trevi-lux’s thread

Yes, this one

Quote:
http://budgetlightforum.com/comment/1203511#comment-1203511

Beam me up!

fuzun
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Definitely not an issue but I am hearing sound while it is operating at approximately %70 %80 level.

I am 20 years old and sound is 19000~ hertz. You probably will not notice this Big Smile

And it is not special for Q8. I am also hearing it from s2+.

S2+ frequency is like 15000 hZ.

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Zanflare C4 seems to be “the new Lii 500” i.e. even better analysing charger, HKJ review is very complimentary.

Yesterday GearBest had it on offer for about £18, should have snapped one up, now back to £30, but will watch closely. Any “codes” welcomed, PM or otherwise.

Edit: I do like the basic Lito chargers, I usually give 1 or 2 cell versions with my presents. You are limited by current capability of whatever e.g. mobile phone charger you use to power them, never tried the 4-cell version. Actually pretty useful as a power bank too, in reverse, have used this function more often than I thought. Unbelievable value and do the job competently.

Tom Tom
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Flashy Mike wrote:
Tom Tom wrote:
E.g. if MCU pin is left floating tri-state (and R3 has become disconnected), only the tiniest leakage current would be enough to charge the FET gate just sufficiently to turn it on very slightly.
I suspected this also but according to Toms’ code the pins for FET and 7135 are always configured as output.

Still might be worth a quick look. Sometimes code doesn’t do what you think it should.

Something must be leaking a small current when MCU asleep. Obvious suspects either FET or 7135. There is nothing much else to the circuit.

I don’t really believe in e.g. PCB contamination or weird high resistance “shorts” causing this.

ISO
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Yea maybe Zanflare z4 is good but if you can get a 402 for 8 $ i think its a good deal also. I have the Liitikola 500 and its good but it cost about 22$ with powersupply

The Miller
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Yes please convert to $
When a charger is twice as much normally and sporadically goes down to above Lii500 $20 regular price it is not the new li500 Smile
If you would mind testing IR a few times to get the lowest reading yea at $22,60 the C4 would be on my wishlist.

JasonWW
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The Miller wrote:
Lii402 is simpler and cheaper
I am waiting for a $8 deal then I get one to have as spare, it is four bay but without fancy screen and functions

That one only does 0.5A per cell, so it takes twice as long to charge.

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Calmaja wrote:
Zulumoose wrote:
You shouldn’t be carrying the Q8 around in a pocket, any fool can see that with the correct D ring installed it is meant to be a keyring light.

Sorry, I can’t agree with you about this. I try in my keyring, but don’t feel it is the right size as keyring light Blushing

It’s great on the bill of a baseball cap.

Tom Tom
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ISO wrote:
Yea maybe Zanflare z4 is good but if you can get a 402 for 8 $ i think its a good deal also. I have the Liitikola 500 and its good but it cost about 22$ with powersupply

No question, the basic Liitos, whether x1, 2 or 4 cells are up to the job.

I have standardised on the 1 and 2 cell basic Liitos, but that’s because I always carry a chunky USB charger with x4 2.4A outputs plus a fifth Qualcomm Quickcharge 3.0 output (can ramp up to as much as 12V 1.5A for my USB C Windows tablet).

So the two cheapo x2 Liitos can each get 2A, whereas I think the single x4 version has to share 2A 4 ways.

And having had failures, I also carry a basic 2.1A mobile charger for backup. So with two USB power supplies (one very sophisticated) and two Liito chargers, and multiple cables, I am confident of surviving multiple failures. Or helping out someone less well prepared.

Agreed no need for an analysing charger, but if looking for one, the Zanflare does seem to be ahead of the Liito 500 these days, when at the right price. Comes with 12V car lead as well as the mains transformer too, not sure if the Lii 500 also does ?

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JasonWW wrote:
The Miller wrote:
Lii402 is simpler and cheaper
I am waiting for a $8 deal then I get one to have as spare, it is four bay but without fancy screen and functions
That one only does 0.5A per cell, so it takes twice as long to charge.
Thanks for the heads up on that Jason. I was thinking about pulling the trigger on one. Have to pass now…..

Way to slow for me.
A 3000 mAh cell could just be charged at 0.166 C also.

Does it harm a cell to charge it like that??

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fuzun wrote:
Definitely not an issue but I am hearing sound while it is operating at approximately %70 %80 level.

I am 20 years old and sound is 19000~ hertz. You probably will not notice this Big Smile

And it is not special for Q8. I am also hearing it from s2+.

S2+ frequency is like 15000 hZ.

The Q8 should be getting about 15 to 16 kHz (I’ve measured 15.3 to 15.7 kHz). S2+ should be 12 to 15 kHz, or ~36 kHz, depending on which batch the driver is from.

Generally these have tried to get a frequency which is as low as possible while still being too high for most humans to hear. Slower uses less power and improves stability, but can look or sound bad, so the sweet spot seems to be as close to 20 kHz as the hardware will allow. For attiny13/25/45/85, the closest it can easily do is about 16 kHz.

ISO
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Tom Tom wrote:
ISO wrote:
Yea maybe Zanflare z4 is good but if you can get a 402 for 8 $ i think its a good deal also. I have the Liitikola 500 and its good but it cost about 22$ with powersupply

No question, the basic Liitos, whether x1, 2 or 4 cells are up to the job.

I have standardised on the 1 and 2 cell basic Liitos, but that’s because I always carry a chunky USB charger with x4 2.4A outputs plus a fifth Qualcomm Quickcharge 3.0 output (can ramp up to as much as 12V 1.5A for my USB C Windows tablet).

So the two cheapo x2 Liitos can each get 2A, whereas I think the single x4 version has to share 2A 4 ways.

And having had failures, I also carry a basic 2.1A mobile charger for backup. So with two USB power supplies (one very sophisticated) and two Liito chargers, and multiple cables, I am confident of surviving multiple failures. Or helping out someone less well prepared.

Agreed no need for an analysing charger, but if looking for one, the Zanflare does seem to be ahead of the Liito 500 these days, when at the right price. Comes with 12V car lead as well as the mains transformer too, not sure if the Lii 500 also does ?

I am always a slow learner..and if Zanflare is as good as you say I will watch out for it next time price is right… but maybe I must sell or give away some of my other chargers before that.

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