Best 18650 batteries?

[Dimitri Stephan]

Hello people, I've recently purchased a 200 mW green laser and was looking for the best protected 18650 batteries. Can anyone suggest some really good ones that I can purchase online?
Thanks!

 

[Kestrel]

What I'd suggest is having your thread moved to the batteries/electronics subforum.

Edit: I've notified the mods for this.

BTW in the meantime, you might want to search for 'best 18650 AW protected' in the search box

Oh, and welcome to CPF.

 

[Dimitri Stephan]

Thank you for the quick reply; I will move my thread to the electronics sub-forum

 

[Dimitri Stephan]

Hello guys, I've recently received my 200 mW green laser with UltraFire 18650 battery, and charged it fully at 4.2 V, but the laser is no where near 200 mW. I am guessing the battery is defective? Anyway, I wanted to get some high quality batteries for my laser to see if that's the cause of the problem. Can anyone suggest some high quality 18650 protected batteries that can be purchase online? Thanks!

 

[Kestrel]

I see that you've created a new thread on this in the correct subforum, so it would probably be most appropriate for this thread to just be closed.

 

[KD5XB]

I have ZERO experience with lasers -- so I don't know if 200 mW is a lot or not. I CAN tell you that 200 mW in an RF world is considered "flea power", and pretty much the same in incandescent and LED flashlights.

That being said -- how do you know your "laser is no where near 200 mW"? Milliwatts measure electrical power, not brightness. My first suggestion is not new batteries, but to measure the open-circuit voltage of your batteries to see what condition your batteries are in. Measure them under a load, too, if you can. If your 18650 charges up to 4.2VDC and then the voltage drops a bunch as soon as you take it off the charger, then you should replace it. On the other hand, if the battery voltage is OK, then you might have a different problem -- dirty contacts, perhaps. But you should certainly check everything you can before investing in new parts.

 

[VidPro]

its nowhere near 200mw what would be new about that :thumbsup:
just be happy its mabey around 80mw

if i remember right the amp draw with a 200mw lazer thing and its driver is about 1/4th of an amp right? and it should remain regulated to at least 3.6v. about any battery should be able to cope with that, even an older UF should be able to handle that. So i am leaning towards that aint the problem, unless you got a sicko one.

could be "either or" i think, untill you have another 18650 to test with.
a pila 18650 is protected has a good reliable cell item in it.
AW sells some good well tested protected 18650s in the marketplace
The correct trustfire can be an usable cell item
a UF will work good, just not for long and its often a sloppy build, but again a new one, charged and you tested the charge voltage, and it aint working, points to the pointer more.

but if you want best you get a LG , Sony , Sanyo, Panasonice raw cell and put your own protections on it.

 

[KD5XB]

Well -- 200 mW at 4.2 VDC would be .047619 amps -- but that's not necessarily what the laser is using, that's just a simple equation (watts=volts times amps).

 

[bshanahan14rulz]

In this situation, 200mW is supposed to designate the optical power that the laser puts out.

Does your laser put out a round dot?

 

[Monocrom]

Why create a new thread?

Best 18650 batteries = AW brand.

Thread is done!

 

[mrartillery]

Why create a new thread?

Best 18650 batteries = AW brand.

Thread is done!

+1, nothing else to say but AW!

 

[Dimitri Stephan]

Thanks for the replies guys. Apparantly, I wasnt being able to burn anything with my laser, untill I discovered the importance of the focus ring
That's when everything changed! I can now ignite matches from 9 feet away, cut through dark colored plastic, fibers etc...
So I guess I am getting the power I paid for, I just thought the beam would look way brighter and be able to burn things when focused to infinity. I have ordered a pair of AW 18650 Protected 2600 mAh Rechargeable Lithium Battery - New Version from lighthound because I will need more than one battery in case it dies or runs out on me. Cheers!

 

[mdocod]

The lower than expected power consumption and output is likely not related to the battery but rather, the laser itself. There is also likely nothing wrong with the laser. The laser was probably way over rated by the manufacture and the seller.

ebay/DX/KD and other "deal" sites sell a lot of these over rated lasers.

Is your laser an over-rated laser from a "deal" site?

Eric

 

[Dimitri Stephan]

Apparently, there is nothing wrong with the laser itself. It was I who didn't know that focusing the dot was the only way to burn things.

 

[MarNav1]

DO NOT shine that thing in your eyes.

 

[DM51]

Threads merged