26650 for 18650?

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Deputydave
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26650 for 18650?

Talking with my nephew this morning. He just got a new 18650 flashlight that he loves. I told him to shy away from the Chinese batteries and get something like a Sanyo (which was recommended to me here on BLF). His flashlight, in addition to the 18650 can also take the 3xAAA and has the plastic sleeve that fits around the 18650.

Now here’s the question, he says that this light will also take a 26650 battery. Is this correct? I have never used a 26650 so I don’t know anything about them. If this is correct, can you recommend a good maker at a good price?

Many thanks.

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Deputydave
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Also what is a reasonable/realistic MAH for a 26650? Thank you.

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dangerous
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Good 26650 range is 4000-5200mah. The light sounds like it takes 26650. Do you have a name or model of the light? You can get good cells from many sellers like mtne: http://www.mtnelectronics.com/opencart/index.php?route=product/search&se...

BLF

leaftye
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I believe all 26650's are chinese except for A123, which is a chinese company now too.  That's not a bad thing.  It's not chinese batteries you want to avoid, it's the *fire, and particularly the Ultrafire batteries you don't want.  Those batteries come from all kinds of sources, most of them awful, and not worth a real brand name though.  Trustfire is an exception though, and surprisingly, there doesn't really seem to be any bad 26650's.  

All that aside, it seems like you want better 26650's, and any batteries Illumination Supply or Mtn Electronics sells will be good.

The low mode should be lower.

Deputydave
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Excellent guys, thank you very much. I had no idea that a 26650 could fit in some 18650 flashlights. This provides me some nice options for back up i.e. I can put a 26650 in the light and have an 18650 and 3xAAA for back up.

I’m currently using the Sanyo 15650 2600mah recommend to me here on the board. I see the Trustfire on Amazon (by Trustfire) at 5000mah so I suppose that is about double the capacity for the light.

Well when I joined this board I was warned that it would cost me money :bigsmile:

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leaftye
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Trustfire does lie about their capacity like most chinese companies, but the real Trustfire batteries still perform okay compared to other batteries.  Just be sure you buy them from a reputable source.  The labels should have real holograms. There are fakes.  Real Trustfire 26650's are decent affordable batteries if you want a built in protection circuit, but I've been going more and more with IMR batteries lately.

 

I bet your nephew got one of those $10 F13's?  Those have the 3xAAA carrier, sleeve for 18650's and can use 26650's.

The low mode should be lower.

ImA4Wheelr
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I think that King Kong ICR's are widely recognized as a good all around 26650.  I'm not sure who has a good price these days.  I got mine from FT.

http://www.fasttech.com/products/0/10003591/1263000-king-kong-icr26650-3...

http://www.fasttech.com/products/0/10003591/1263001-king-kong-icr26650-3...

Werner
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Not all 3xAAA lights accept 26650.
Just measure the inside diameter of the batterytube if it is around 27mm than a 26650(26mm thick 65mm long round cell) should fit

Often the 3AAA adapter are only 22mm or so and a 26650 don’t fits in.

Tom E
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Deputydave wrote:
Excellent guys, thank you very much. I had no idea that a 26650 could fit in some 18650 flashlights. This provides me some nice options for back up i.e. I can put a 26650 in the light and have an 18650 and 3xAAA for back up. I'm currently using the Sanyo 15650 2600mah recommend to me here on the board. I see the Trustfire on Amazon (by Trustfire) at 5000mah so I suppose that is about double the capacity for the light. Well when I joined this board I was warned that it would cost me money :bigsmile:

Dave - be careful, because typically it's called a 26650 light that can use 18650's or a triple AAA carrier. Actually I don't think I ever heard a light called a 18650 light than can use a 26650 or 3 AAA's. Also those true TrustFire 5000's are good, but I believe they test with a capacity of around 4000, but still decent for the cost.

Deputydave
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@ Leaftye,

It was one of those inexpensive CREE LED lights on Ebay, which is where I’ve purchased most of mine from. Of all the one’s I’ve purchased, only had a slight problem with one and they replaced it without issue.

Here is what I purchased: 2 pc Trustfire

Stated the seller was Trustfire and it had a rating of 4.5. A tad over $18 for two so I figured I’d give this a try.

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Tom E
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FT listing here: fasttech.com-trustfire-26650-37v-5000mah says 4000 actual, and I think others reported that. Actually got one of mine in the Opus dream charger doing a discharge test, so will know this evening what mine tests to be, though mine have had quite a few charge cycles and are over 1 year old now.

But still, the King Kong cells are wayyy better - works for high amps and higher capacity, well proven. On FT they are cheaper, and Richard has them for $16.40 a pair, plus shipping - so should be the same price you pay for the TF 26650's. Absolutely better deal with the KK's from Richard here: mtnelectronics.com KK 26650. KK's test between 4200 and 4500 mAh, though they are labeld at 4000.

 

leaftye
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Mine are older too, stored fully charged, but I can throw it in my Thunder AC680.  It usually reports about 100mAh too low, but that should be close enough.  Actually, I'll go ahead and do it anyway because it's one of the batteries I'm going to keep at a good storage voltage.   It's going to take about 9 hours, depending on how healthy mine is.  I didn't get it from Fasttech though...I can't remember where I got it.

 

Whatever the case is, be sure to check out if the hologram graphics are real.

The low mode should be lower.

leaftye
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Mine are nearly two years old.  I'm glad I posted about this.

http://budgetlightforum.com/node/13585#comment-242865

 

The results though.  Ouch.  I hope this is my worst 26650 by far.

The low mode should be lower.

StorminMatt
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The King Kong is certainly a fine battery. But I feel like, if you are going to go with a 26650, the Keeppower 5200 is THE way to go. You actually get a decent amount of capacity along with that bigger cell.

Without lamps, there’d be no light.

Tom E
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KP 5200's do have the high capacity, but no match for the KK's for higher amps, as Richards say on his website.

My TrustFire 5000 tested at 4026 mAh on the Opus dream charger. Pretty sure this is typical.

Deputydave
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Well I received the two Trustfire 26650 batteries that were recommended by leaftye above. Pretty quick shipping. However (and I was warned above), not all 18650/3xAAA lights take the 26650. This turned out to be the case with the two that I have that are 18650/3xAAA.

So this now means I need to buy another flashlight :bigsmile:

So I’ll take recommendations if anyone would like to toss out a link. Thinks to keep in mind, I like the Sipki ‘style’ lights, though it could be different. And I’m chea….er, frugal. Wink

Thanks!

(feel like I bought a brand new door knob and now I need a house to go with it)

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Tom E
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Always give us product links Smile. Someone could probably help you out before ordering parts/cells, etc. I just got in a cheap 26650 zoomie, if that's what you are itnerested in. Another nice, cheap light was the F13 clone that we just had a group buy on (http://budgetlightforum.com/node/31213).

Deputydave
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Tom E wrote:

Always give us product links Smile. Someone could probably help you out before ordering parts/cells, etc. I just got in a cheap 26650 zoomie, if that’s what you are itnerested in. Another nice, cheap light was the F13 clone that we just had a group buy on (http://budgetlightforum.com/node/31213).

I appreciate the link. That may be the way I go. I didn’t read the entire thread, I’m assuming the folks here that bought one were happy with the light?

As a means of comparison, how does this look as an option; TrustFire A8 CREE XML XM-L T6 LED Flashlight 5-Modes 1600LM Torch Light 26650 US

Better/worse/same as the F13 clone linked in the quote?

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Deputydave
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Also, I’m I correct that an XML T6 is 1000 lumen max so the 1600 is just advertising hype?

Also, if anyone knows, what is the approx. run time on a light like linked above (F13 or A8) assuming a TF 5000mah 26650 (that may actually be more like 4000mah). Rough estimate to put me in the ballpark is fine as I’m just curious. And thank you.

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Tom E
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The TF A8 is a nice light - I got one too. We had a group buy at that a while back, called the BLF A8. I prefer the F13 style though - little smaller, better output, though the A8 is maybe a little better quality, but who knows now - quality tends to drop from production batch to batch, and I've seen some low quality A8 clones.

No - the XML T6 does not max out at 1,000 lumens. 1,600 or so may actually be theoretical max, but no way, no how in budget lights will you get that output. 1,600 lumens is "chinese lumens" -- a total joke. I'g guess on the A8, you will get 450-600 lumens or so.

Runtime will be based on the amps drawn from the cell. So, if it draws 2A steady on hi mode, roughly it will last 2 hours at 4000 mAh. I'm thinking the A8 might be in the 2A range, maybe 1.6A, maybe 2.5A at most. So again on hi mode, you should see 1.5 hrs to 3 hrs at most. Much longer on lower modes of course. because of drawing lower amt of amps.

 

Deputydave
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Another question, I see TF A8’s in the $20 range +/- and also in the $50 range. Is there a difference in the actual product?

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Tom E
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$50 range? Maybe includes a charger and 1-2 batteries?

Ok Here for $55: ebay-Trustfire-TF-A8-Rechargeable-Flashlight-Set, the key thing is "set". Read carefully and it says charger, holster, protected battery.

Just got my 3rd F13 in today from the group buy - love these things. A8 disappoints because of a small SMO reflector and the SS bezel interferes with light output.

wight
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StorminMatt wrote:
The King Kong is certainly a fine battery. But I feel like, if you are going to go with a 26650, the Keeppower 5200 is THE way to go. You actually get a decent amount of capacity along with that bigger cell.
I think the numbers really supported the nicer KK cells over the KP5200’s. KP5200’s sagged a little worse IIRC.

FWIW on the topic of the Trustfire 26650’s… toysareforboys recently had a bad experience w/ his TF cells. Couple that with leaftye’s discharge graph of a two year old cell and they look like an “avoid” cell to me…

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
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phantom23
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HKJ tested the Keeppowers and they scored over 5000mAh at 5A. That’s more than enough in a stock flashlight. There’s also IMR version that keeps higher voltage but at 5A and more.

leaftye
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I wouldn't look at my discharge graph that way. Look at it more like an example of what might happened if you store them fully charged the entire time.  I'll do more tests when I get a chance.

The low mode should be lower.

Tom E
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phantom23 wrote:
HKJ tested the Keeppowers and they scored over 5000mAh at 5A. That's more than enough in a stock flashlight. There's also IMR version that keeps higher voltage but at 5A and more.

The KK 26700 is 5000 mAh labeled, tested at 5300 mAh on my Opus charger, and fits in F13's and the Yezl Y3. Seems to have the same power and low resistance of a KK 4000 in tests I did in real DD lights.

wight
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Sorry, I must have been thinking of another cell. The KP cell does look OK to me, although not really much superior to the KK if at all. Lower voltage under load and slightly more mAh at the (generally unregulated) tail end. YMMV I suppose, depending on the goal the KP seems like a fine option.

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
list of my drivers & variants (A17DD, FET+1 stuff, WIP stuff, etc)

Deputydave
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Okay, I’m learning quite a bit in this thread, many thanks.

I’m liking the looks of the F13 and A8 linked above. Hard to know what separates a good (inexpensive) light from a cheap (garbage) light. For example, surfing Ebay this morning and saw this;

2000lm CREE XM-L T6 LED 18650/26650 Flashlight Focus Torch Light Aluminium alloy

Okay, I understand the 2K lumen thing is advertisement. But is this an inexpensive light or a cheap light? Or is there really anyway to tell? I understand the clones are a dime-a-dozen. How would it compare with either the F13 or A8 linked above. Is the F13 twice as good (since it’s twice the price at a whopping $14 and/ore is the A8 three times as good since it’s like $4 more than the F13)? Does anyone have one of these Ebay lights and if so, how is it?

Your thoughts?

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Deputydave
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And how does this look?

CREE XM-L T6 2000 lumens LED lanterns Support Zoom Function Flashlight 26650 ×2 / 18650×2

With using 2×26650 or 2×18650, what would you expect the lumens to really be?

Thanks for your input Smile

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wight
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I have an A8 clone from eBay. I was totally underwhelmed with the overall quality, fit and finish, etc. Besides fit and finish issues, I had contact issues with the tail switch assembly that were a pain to fix. I replaced the driver and maybe put the LED on a Noctigon, I don’t remember – the result wasn’t impressive.

The F13 from GB isn’t a bad light, but out of the box it’s not very impressive either. I replaced the driver and installed an XM-L2 on a Noctigon and used a thin centering ring. I ended up with a huge spot, I think I may warm up to it. Other people seem to like it.

I don’t have one, but for superior fit/finish/build-quality, maybe consider the Supfire L6? http://budgetlightforum.com/node/29910

I’d stay away from those eBay lights if you’re looking for quality or a sure thing. Stick with a trusted or semi-trusted dealer and a model that’s known to deliver consistent results. There’s little to nothing you’ll be able to key off of in an eBay listing to “detect” quality.

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
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Deputydave
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After putting some thought into it and looking at all the links and such, I decided to get my feet wet on the 26650 with a Trustfire A8. Coming from California. $18.03 with free shipping.

Trustfire A8

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