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BLF A6 XPL 1600 Lumens LED Flashlight - $18.95

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https://www.banggood.com/BLF-A6-X...rehouse=CN

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#2
Got a couple of these I use as bike lights. Tore apart a few old laptop batteries (EASY) and I have a large supply of decent-capacity 18650s.
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#3
Quote from zbuffered
:
Got a couple of these I use as bike lights. Tore apart a few old laptop batteries (EASY) and I have a large supply of decent-capacity 18650s.
Nice. I've seen alot of posters mention harvesting cells from laptop batteries.May have to give it a shot. For now, I ordered some from Amz.
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#4
Nice! These are FANTASTIC lights. I'd consider myself somewhat of a flashlight geek - I have a few of these and similar variants, and I'd say this is my "desert island" light. (If I had to pick just one...) This one is relatively compact (not EDC size, IMO, but easily pocketable) and has a great balance of throw (distance) and flood (wide angle light) for general use. Highly recommended. This price is solid, but not spectacular - it's pretty easy to get it for $20ish most of the time if you look around for coupons.

Quote from zbuffered
:
Got a couple of these I use as bike lights. Tore apart a few old laptop batteries (EASY) and I have a large supply of decent-capacity 18650s.
Just a quick note that taking apart laptop battery packs might be easy, but it is potentially dangerous! A sloppy slip of a screwdriver could potentially damage the batteries or even hurt you if you short out the cells. And the individual cells in a laptop battery pack would usually be unprotected - OK if you know what you're doing, but again, potentially dangerous if you're not careful.
If you're not completely confident in Li-Ion battery usage and safety, spend the extra few bucks and buy a reliable battery with a protection circuit ("protected" batteries have a chip to prevent over- or under-charging, both of which could damage the battery or potentially cause a fire). Here's one example [banggood.com] of an inexpensive but reliable cell, if you're ordering from BG anyway.
A super-cheap or damaged charger is also risky - be sure to get a reliable one with good reviews! This [banggood.com] is a very simple one that seems to be pretty respected on forums.
HTH!
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#5
Quote from anewhouse
:
A super-cheap or damaged charger is also risky - be sure to get a reliable one with good reviews!
I agree that unprotected, used 18650s can be dangerous, but a single-cell flashlight is the safest use for them. I have a XTAR VC4 charger which had good reviews and has given me good results. Charging the battery is probably the most dangerous part (unless you accidentally short it, as you mentioned). One thing I like about my charger is it has an LCD display that'll tell you how many mAh capacity (assuming you run the battery down beforehand) it put into the battery, allowing me to sharpie these laptop batteries with their capacity. Often in laptop batteries I've found one or -maybe- two batteries with significantly lower capacity and the others hit the rated capacity.

My advice is to stay away from any XXXfire branded batteries, and look for cells from the big 18650 manufacturers. Panasonic ncr18650b protected cells are my favorite, but Samsung and Panasonic cells in general should be pretty solid.

Banggood recommends Samsung INR18650-30Q 3000mah which appear to be unprotected cells. If the BLF A6 has low-current protection built in, then this makes good sense as unprotected cells can better handle high current draw.

According to this Reddit thread [reddit.com], the forward voltage of the LED is 2.8v, meaning very little if any current will flow if the battery drops below this level. The spec sheet for the INR18650-30Q shows the end voltage at 2.5v so that means you should be safe to leave the light on and walk away.

Wave
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Last edited by zbuffered December 19, 2017 at 11:32 AM. Reason: fix quote brackets
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#6
Quote from zbuffered
:
Got a couple of these I use as bike lights. Tore apart a few old laptop batteries (EASY) and I have a large supply of decent-capacity 18650s.
Are you using your own laptop batteries or buying them?
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#7
Quote from Slickone_
:
Are you using your own laptop batteries or buying them?
Getting them from work, we have a bunch of laptops that are ~4 years old and I've bought some replacement batteries for them and claimed the old ones.
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#8
FYI for anyone confused by the "Design: 1A 3D 5A" selections. Design refers to Light Tint:
3D (5000K) Neutral white
1A (6500K) Cool white
5A (4000K) Warm white
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#9
Quote from zbuffered
:
I agree that unprotected, used 18650s can be dangerous, but a single-cell flashlight is the safest use for them. I have a XTAR VC4 charger which had good reviews and has given me good results. Charging the battery is probably the most dangerous part (unless you accidentally short it, as you mentioned). One thing I like about my charger is it has an LCD display that'll tell you how many mAh capacity (assuming you run the battery down beforehand) it put into the battery, allowing me to sharpie these laptop batteries with their capacity. Often in laptop batteries I've found one or -maybe- two batteries with significantly lower capacity and the others hit the rated capacity.

My advice is to stay away from any XXXfire branded batteries, and look for cells from the big 18650 manufacturers. Panasonic ncr18650b protected cells are my favorite, but Samsung and Panasonic cells in general should be pretty solid.

Banggood recommends Samsung INR18650-30Q 3000mah which appear to be unprotected cells. If the BLF A6 has low-current protection built in, then this makes good sense as unprotected cells can better handle high current draw.

According to this Reddit thread [reddit.com], the forward voltage of the LED is 2.8v, meaning very little if any current will flow if the battery drops below this level. The spec sheet for the INR18650-30Q shows the end voltage at 2.5v so that means you should be safe to leave the light on and walk away.

https://static.slickdealscdn.com/ima...lies2/wave.gif
Thanks for the info. I'm just now getting into flashlights and never knew that it could be so complex! I'm looking to purchase a charger soon --- planning to get either the Xtar VC4 or the Nitecore D4. Do you have a recommendation between the two of them? How do you like your Xtar?
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#10
I have carried one of these daily for the past few months, great light. I've had a few issues with it occasionally, I can be a bit rough on my tools, but it's still working. I somehow set it to the 5 mode (used to have it set to 7 mode), I need to look up how to change it heh. I would grab another as a backup if christmas hadn't tapped me out already.
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#11
Quote from 1SlickDilla
:
Thanks for the info. I'm just now getting into flashlights and never knew that it could be so complex! I'm looking to purchase a charger soon --- planning to get either the Xtar VC4 or the Nitecore D4. Do you have a recommendation between the two of them? How do you like your Xtar?
You didn't ask me, but take a look at the bt-c3100 v2.2. can take almost any battery and charge it safely, very well reviewed

go here for unbiased review
http://www.lygte-info.dk
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Last edited by RichardR4811 December 19, 2017 at 08:28 PM.
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#12
Quote from anewhouse
:
Nice! These are FANTASTIC lights. I'd consider myself somewhat of a flashlight geek - I have a few of these and similar variants, and I'd say this is my "desert island" light. (If I had to pick just one...) This one is relatively compact (not EDC size, IMO, but easily pocketable) and has a great balance of throw (distance) and flood (wide angle light) for general use. Highly recommended. This price is solid, but not spectacular - it's pretty easy to get it for $20ish most of the time if you look around for coupons.


Just a quick note that taking apart laptop battery packs might be easy, but it is potentially dangerous! A sloppy slip of a screwdriver could potentially damage the batteries or even hurt you if you short out the cells. And the individual cells in a laptop battery pack would usually be unprotected - OK if you know what you're doing, but again, potentially dangerous if you're not careful.
If you're not completely confident in Li-Ion battery usage and safety, spend the extra few bucks and buy a reliable battery with a protection circuit ("protected" batteries have a chip to prevent over- or under-charging, both of which could damage the battery or potentially cause a fire). Here's one example [banggood.com] of an inexpensive but reliable cell, if you're ordering from BG anyway.
A super-cheap or damaged charger is also risky - be sure to get a reliable one with good reviews! This [banggood.com] is a very simple one that seems to be pretty respected on forums.
HTH!
Great post! I'm looking to buy 8 higher mAh 18650 and a 4 bank charger. What should I get? I was looking around black Friday without luck and never pulled the trigger. It's for Q8 and GT.
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#13
My favorite EDC light of all time. I use the short tube and batteries during warm weather months (extra purchase) with a paracord lanyard to pull it from pocket. Very pocketable that way. The regular tube and 18650s during winter dark months when wearing bulkier clothing. Love the up down brightness settings. My neutral white 3d version is a very agreeable slightly warmish neutral.

short tube
https://m.banggood.com/BLF-A6-Ast...ether-auto
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Last edited by DrGwat December 19, 2017 at 08:49 PM.
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#14
Quote from 1SlickDilla
:
Thanks for the info. I'm just now getting into flashlights and never knew that it could be so complex! I'm looking to purchase a charger soon --- planning to get either the Xtar VC4 or the Nitecore D4. Do you have a recommendation between the two of them? How do you like your Xtar?
Quote from Prodeje79
:
Great post! I'm looking to buy 8 higher mAh 18650 and a 4 bank charger. What should I get? I was looking around black Friday without luck and never pulled the trigger. It's for Q8 and GT.
For chargers, I own a Nitecore i4 (older version, it looks like the D4 but without a display) and an XTAR VC2 (mine is the two-bank version of the VC4). The Nitecore charges a little faster, IIRC, but it's too short to fit longer protected cells, and doesn't take 26650's. I got the VC2 primarily to evenly charge a pair of protected 26650's for an L6 - it takes at least overnight to charge those, but overall I like the charger better than the Nitecore. Besides the ability to fit longer cells, the display is handy (real-time voltage, and cumulative/total amperage), and it conveniently plugs into a microUSB cable, which seem plentiful and ubiquitous. I also actually prefer the slower charging rate of the XTAR (0.5A/cell IIRC), as I've read it's a little gentler on the cells, especially smaller-capacity 14500's etc. I have spare cells, so I'm never in a hurry to charge as fast as possible.

Prodeje - for new 18650's, I'd head to BLF (you're probably already familiar with that if you have a Q8... Wink ) and see what coupon codes you can find for protected Panasonic, LG, or Samsung cells. I have 3 or 4 different types, and don't have strong opinions about which are best, as long as it's a generally reputable brand. I agree with the above poster to stay away from almost anything with "fire" in the name! Big Grin I'd add that you should be suspicious of anything that claims >~3500 mAh/cell. If you're looking for reasonable prices, usually that means avoiding Amazon and going with Banggood or similar, but I've never had problems there, other than slow shipping times. If you want them quicker and don't mind paying a modest premium, mtnelectronics.com is one of the few reputable US-based dealers of lights, good cells, and chargers.
HTH!
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#15
I have this and am really impressed by it's output. However, I'm not sure I need one this bright for a bike light in the city. If anyone knows of a similar build quality 18650 led torch, but slightly less bright and around 10-14 bucks, I'd be appreciative Smilie
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