Back to buying flashlights but disapointed

BlueSwordM · 2018-09-15T21:53:57.000Z

1. Yes. There are a lot of sizes for lithium ion cells.

2. Not really if you don’t buy unprotected 18650s, like I don’t.

3. You are very unlucky. Good 18650s in the US cost around 6$US, and some can handle 10A, and even 20A.

Protected 18650s from flashlight sellers are usually extremely expensive, usually 3-4x. Not 6x as in your case. Brazil’s import taxes suck.

4. Yes that is true. Quite many lights do stepdown after a set amount of time even it is cold outside. Some never step down though, like the Convoy L2 and Haikelite MT01, and some do according to temperature, like the BLF Q8.

5. Yes, but they output a lot of power in exchange. And are very efficient below 1000 lumens in exchange.

XHP35 are 4x XPE2s together.

XHP50 are 4x XPG2/XPG3 together.

XHP70 are 4x XPL/XPL2s together.

6. Propriatery battery packs suck, yes.

If you want 18650s inside of lights, I would look at the BLF A6, and Sofirn lights on Aliexpress.

These lights include 18650s capable of 15A+ of current, so they should be good and legal for shipping.

Eduardo · 2018-09-15T22:24:08.000Z

Thanks for all tips.
My disappointment is that during the era of XML-T6 my zoom cheap flashlights worked with the crappy 18650 that came with them. These were sold by street vendors. Even my Nitecore EC25 worked with these crappy batteries. Later I´ve bought a Nitecore E40 from China and a friend in New York brought an E41 for me. Now I decided to buy some more powerful ones and see that they work on turbo for a ridiculous 2 minutes. Any way I´m satisfied with te E42 and the EC4S. The EC4S is working with the old “trustfires” I had.
Hope Cree creates some new leds as they should be: Higher lumens + lower consumption. HEHEHE.

zak.wilson · 2018-09-15T23:01:58.000Z

Hope Cree creates some new leds as they should be: Higher lumens + lower consumption.

Newer LEDs do exactly that, though many of us in the hobbyist world trade back some of that efficiency for color quality - CRI, and tint that matches our preferences. CRI is very valuable for seeing detail outdoors. Each generation of LEDs tends to be more efficient than the last, and the ability to maintain efficiency at high power is improving as well.

Cree is not the only manufacturer of high-power LEDs. Samsung, Osram, LG, Nichia, and Luminus make high-power LEDs suitable for flashlights. Big flashlight manufacturers seem to prefer Cree, but some of us have been pressuring them to expand their horizons.

Lightbringer · 2018-09-16T01:40:50.000Z

To be fair, Cree was always on the bleeding edge of efficacy, first to hit the 100lm/W mark, etc., but new flip-chip designs, while more efficient, also give rise to nasty angular tint-shift, the dreaded “Cree rainbow”. Also makes for some nasty fried-egg beams.

But most newbs just want ∼BRIGHT!∼, quantity over quality.

Given the choice between a high-brightness Cree and a Nichia that’s only 2/3 the lemons, they’ll go for the Cree.

The unwashed masses have spoken…

Tony_Cape · 2018-09-16T06:50:13.000Z

I had the same problem with batteries.Here in South Africa the branded cells are around 4 to 5 times the price .Then I discovered that Vape shops have all the best high amp 18650 freely available and always at the right price.

Macka17 · 2018-09-16T11:17:52.000Z

Same here in AUS.
Branded ones are exxy here,
So I bought coupla 4 x sets of Q30’s on coupons from Bangood. $31 del.
Same with some protected and unprot, Panasonics.
Soshine 26650’s from Kaidomain?.

If you can find some cheap/on sale, etc. Laptop battery packs.
They vary from 4/6/8 cells each. Buy one or two.
The GOOD laptops always seem to have LG. Sanyo or Samsung when I’ve opened them.
OLDER ones usually give good battery’s too. but individual capacity’s are usually 2200 or 2500.
Fine for std torches. They all fine normally,
I’m still using some after 4+ yrs.

zak.wilson · 2018-09-16T13:18:03.000Z

Cree isn’t the only high-lumen option, especially in 3V LEDs. I guess Olight did use something from Luminus recently, but a cool white SST40 isn’t going to get most of us very excited.

The Samsung LH351D can match the output of the XHP35, costs much less, and it’s easier to drive. Of course, I’d prefer high-CRI variants of either emitter, and those do give up output.

Eduardo · 2018-09-16T19:01:03.000Z

Tony Cape:

I had the same problem with batteries.Here in South Africa the branded cells are around 4 to 5 times the price .Then I discovered that Vape shops have all the best high amp 18650 freely available and always at the right price.

Here vapes are not allowed and are sold by obscure private sellers, for very high prices. They mostly sell those 8800 mAh fakes.
Also notebook third party replacement batteries cost around 100 dollars here, so almost no one changes the batteries, using the notebook from the mains.
Best regards and thanks all.

Enderman · 2018-09-16T20:16:33.000Z

1) Yes there are lots of li-ion batteries, just as with anything else in life. You pick the one you want based on size or capacity.

2) Only protected ones, plenty of unprotected ones are 18x65, and 90% of batteries are unprotected so just buy the right ones.

3) Very few flashlights require proprietary batteries. If they don’t there’s no reason you can’t use other cells that aren’t from that same brand. Just do some research and find out what the best ones are.

4) That’s because manufacturers have been pushing lumens higher and higher. If you want something that lasts longer then just use high or medium and not turbo, or get a flashlight with lower turbo output.

5) Obviously a huge LED that produces tons of lumens uses lots of power. They are still far more efficient than previous LEDs.

6) Very few flashlights use special battery packs, those are usually just super high output flashlights that cost like half a grand. If you don’t want a proprietary battery pack then simply don’t buy those flashlights.

Eduardo · 2018-09-16T22:19:02.000Z

Sorry, but all AA, AAA batteries, 16 gauge wire, 1 inch pipe, 16 inches pieces of wood are equal in their specification. Steels AISI 410, 440C, API 5L grade B pipe all conform to a specification.This is a main reason to the existence of ANSI, ASTM, ISO and all standard associations.
I was thinking the LiIon batteries were headed to become a standard power source for electric devices during the time I stayed absent from the flashlight scene.
I´ve just found 1 minute ago that the “vapers” seem to use only flat top 18650s. Didn´t find out for sure!!! And lots of people ask how to solder a blob on flat tops, what is pathetic. Didn´t get the reason, but this kind of thing leads to confusion and avoids the maintenance of a standard.
I seems even the flashlight hobby forum seems to be decreasing. Very sorry.
Best Regards
Eduardo

BlueSwordM · 2018-09-16T22:34:29.000Z

Well no.

Not all AA cells and AAA cells are created equal. Trying to pull 1A from an NiMH AA is easy peasy, while pulling 1A with an AA alkaline results in a huge voltage drop, and subsequently, power loss. Meaning not all cells are created equal.

And of course not all battery types are created equal!

You have very high capacity, low-medium power, and medium cycle life, like the NCR18650GA.

You have very high capacity, low power, high cycle life, like the NCR18650B.

You have high capacity, medium-high power, like the Samsung 30Q.

You have medium capacity, high power, like the Samsung 25R.

You have low capacity, very high power, like the Samsung 20S.

They are all of the same size, and are made for different applications.

I don’t want to come across as condescending, but I think the reason you aren’t too happy is that you can’t easily get good lithium ion cells at good prices, huh?

The situation regarding shipments in Brazil is very unlucky IMO.

Enderman · 2018-09-16T22:38:16.000Z

Eduardo:

Sorry, but all AA, AAA batteries, 16 gauge wire, 1 inch pipe, 16 inches pieces of wood are equal in their specification. Steels AISI 410, 440C, API 5L grade B pipe all conform to a specification.This is a main reason to the existence of ANSI, ASTM, ISO and all standard associations.
I was thinking the LiIon batteries were headed to become a standard power source for electric devices during the time I stayed absent from the flashlight scene.
I´ve just found 1 minute ago that the “vapers” seem to use only flat top 18650s. Didn´t find out for sure!!! And lots of people ask how to solder a blob on flat tops, what is pathetic. Didn´t get the reason, but this kind of thing leads to confusion and avoids the maintenance of a standard.
I seems even the flashlight hobby forum seems to be decreasing. Very sorry.
Best Regards
Eduardo

This is far from true.
You can find plenty of variation in measurements even if they are “standard”.
For example wire gauge will vary completely depending on how good or cheap the brand is, even though they all are supposed to follow a standard.

Knowing the difference between a flat and button top battery is not rocket science. That is not part of the li-ion battery standard.
If learning a bit about a hobby is too difficult, then it probably shouldn’t be your hobby.
The amount of traffic to BLF has been continuously increasing over the years btw.

Pete7874 · 2018-09-16T22:42:29.000Z

many of 18650 have diameter larger than 18 and length of 70 mm. !!

I’m not aware of any 18650 cells that are longer than 70mm, but some protected ones probably come close to it.

Ronin42 · 2018-09-16T23:48:07.000Z

Consider buying used HP and IBM laptop battery packs. lots of good NCR cells in there. check the 18650 battery thread for specifics.

I ended up with more good 18650 A 2900mAh then I can use.

I have 6 used SF18650GR in great shape I sell you for $2 ea plus shipping.

Tony_Cape · 2018-09-17T07:16:33.000Z

Eduardo:

I´ve just found 1 minute ago that the “vapers” seem to use only flat top 18650s. Didn´t find out for sure!!! And lots of people ask how to solder a blob on flat tops, what is pathetic.

You are correct vapers only use flat tops but always high drain very good cells for our needs.The solder blob is an easy solution to convert flat tops works well tried and tested many times over.

Agro · 2018-09-17T07:45:14.000Z

Enderman:

Knowing the difference between a flat and button top battery is not rocket science. That is not part of the li-ion battery standard.
If learning a bit about a hobby is too difficult, then it probably shouldn’t be your hobby.

There is a lot of needless mess when it comes to battery formats. Flashlight manufacturers and battery rewrappers deserve all the blame.
Hobby is something that’s supposed to be fun. Asking around “Does battery X work with product Y?” is not fun. Having to buy several sets of similar batteries to work around compatibility issues is not fun.
Learning which battery is larger (or smaller) than average is not fun either.

zak.wilson · 2018-09-17T07:56:35.000Z

There’s a standard for 18650: it’s 18x65mm. Adding button tops and protection circuits that change the length is a deviation from the standard. Fortunately, most people who deviate from the standard do so in the same way, so one protected 18650 is usually interchangeable with another unless the light’s power requirements are very high.

Enderman · 2018-09-17T14:06:14.000Z

Agro:

There is a lot of needless mess when it comes to battery formats. Flashlight manufacturers and battery rewrappers deserve all the blame.
Hobby is something that’s supposed to be fun. Asking around “Does battery X work with product Y?” is not fun. Having to buy several sets of similar batteries to work around compatibility issues is not fun.
Learning which battery is larger (or smaller) than average is not fun either.

This “needless mess” you speak of happens with literally anything in life, as with that cable example I posted earlier.
Research and learning is part of every hobby.
If you don’t have the time or patience to find research fun, then this is probably not the hobby for you.

PS- if you buy a good battery that is 18mm diameter x 65mm long and unprotected it will literally work in every 18650 flashlight.
I don’t know what crappy batteries you’re talking about, but all the high quality LG, samsung, sanyo, etc. cells all follow standard.
If someone buys some cheap chinese batteries and then finds out they don’t fit, that’s their fault for being cheap instead of getting a high quality option.

Eduardo · 2018-09-17T14:35:24.000Z

BlueSwordM:

…
I don’t want to come across as condescending, but I think the reason you aren’t too happy is that you can’t easily get good lithium ion cells at good prices, huh?

The situation regarding shipments in Brazil is very unlucky IMO.

.

Yeah, this is the main reason these things are difficult for me here. There are fakes or extremely expensive branded ones.

Anyways I´m very happy with the 3 new flashlights I´ve just bought: beautiful EC4S that’s working well with old batteries, EA42 which is much uglier than it seems on pictures but a joy to use with Eneloops and a lovely Utorch UT-01 that has received the “paper clip ring” trick (made of a key ring) to accept long protected old 14500s.

Agro · 2018-09-17T14:45:51.000Z

Enderman:

Agro:

There is a lot of needless mess when it comes to battery formats. Flashlight manufacturers and battery rewrappers deserve all the blame.
Hobby is something that’s supposed to be fun. Asking around “Does battery X work with product Y?” is not fun. Having to buy several sets of similar batteries to work around compatibility issues is not fun.
Learning which battery is larger (or smaller) than average is not fun either.

This “needless mess” you speak of happens with literally anything in life, as with that cable example I posted earlier.
Research and learning is part of every hobby.
If you don’t have the time or patience to find research fun, then this is probably not the hobby for you.

PS- if you buy a good battery that is 18mm diameter x 65mm long and unprotected it will literally work in every 18650 flashlight.
I don’t know what crappy batteries you’re talking about, but all the high quality LG, samsung, sanyo, etc. cells all follow standard.
If someone buys some cheap chinese batteries and then finds out they don’t fit, that’s their fault for being cheap instead of getting a high quality option.

For example my Samsung 35E doesn’t work with BLF Q8, Folomov EDC-C4, Haikelite MT09R, Astrolux MF-02. Because they all require button top.
OTOH button top Lumintop LM34C works at least with Folomov (haven’t checked with any other of those), but doesn’t work with Emisars.

There are no brand 26650 cells, so one can’t follow your advice. And it happens that the best cell about this size is actually slightly larger than standard and doesn’t fit all lights, regardless if you buy with button or without.

21700 is becoming another standard. And buyers realize that the extra 5 mm in length means that not all chargers can work with them.
There’s 20700 also which largely overlaps with 21700, but is compatible only one way. Some manufacturers go with 20700, some 21700….this is true both with cell and light manufacturers.

I haven’t yet seen “Protected 21700”. It will be interesting when they arrive…

I’d like to note that I wouldn’t use Samsung 35E in Emisar D4 anyway though - because its medium discharge construction is not a good match for this light. But this incompatibility is actually a part of the fun - you tweak component selection to get the best results. Not to work around needless limitations.

I love doing research. But research of intrinsic properties like capacity, internal resistance, low temperature performance, cycle life etc.
Not of “cell X is .1 mm too wide to fit light Y”.