18350 1200mAh

[Glenn7]

I just received 3 sets of 18350 1200mAh Ultrafire from Kai - confirming for anyone interested they are the same width as 18650's and just under 35mm long - 69mm long x2 (measured my blue and grey trustfire's at 68mm long) also they are protected - they fit nicely in my Olight M20 = longer/brighter run time with no need for battery holder :wave:

EDIT: I cut one open and no sorry I was wrong they are not protected. :sick2:

 

[divine]

Re: 18350 1200mAh for my M20 - all good!!!!

The question everyone's been waiting for. How is the capacity?

Not the advertised capacity, the real capacity.

 

[Kerch]

Re: 18350 1200mAh for my M20 - all good!!!!

A lot of these Ultra/Trust/Fire batteries actually have a respectable capacity, yet they still feel the need to overrate them :shakehead

 

[Thujone]

Re: 18350 1200mAh for my M20 - all good!!!!

I did not think they were protected...

 

[Glenn7]

Re: 18350 1200mAh for my M20 - all good!!!!

The question everyone's been waiting for. How is the capacity?

Not the advertised capacity, the real capacity.

Haven't had a chance to test yet - but I don't really care for a few bucks I am happy to just have increased capacity - anything over 16340 is worth it to me.
I know it is not a common size and I have only seen them in two shops for sale if you want them I suggest you order some soon as I have a feeling they will go fast when people pick up on them - Heck I might just buy them all and sell them for double

 

[Glenn7]

Re: 18350 1200mAh for my M20 - all good!!!!

I did not think they were protected...

Yes they defiantly have protection :wave:

 

[LEDAdd1ct]

Re: 18350 1200mAh for my M20 - all good!!!!

Nice find. I wonder how much of an impact they will have on the M20 and it's regulation....

 

[Thujone]

Re: 18350 1200mAh for my M20 - all good!!!!

Thanks for the feedback, this is great news...

 

[orbital]

Re: 18350 1200mAh for my M20 - all good!!!!

+

Funny how we get

over batteries.

The M60 in my Deree V2 will be happy,..thanks for the tip!

 

[Frankiarmz]

Re: 18350 1200mAh for my M20 - all good!!!!

Please explain the benefit over a 18650 with 2600MAH? Thank you.

 

[orbital]

Re: 18350 1200mAh for my M20 - all good!!!!

Please explain the benefit over a 18650 with 2600MAH? Thank you.

+

Legit question,,
It really depends on the IC .
For my purposes, the Malkoff M60 is not designed to run on a 18650 (3.7V),
you can use the one cell, but its regulation suffers.

I can't speak on other lights ect.. but good question anyway.

 

[kramer5150]

Re: 18350 1200mAh for my M20 - all good!!!!

Please explain the benefit over a 18650 with 2600MAH? Thank you.

As far as Lux/Lumens go there is none... if the particular 18650 light has good DC regulation for when the 18650 drops below the emitter Vf. The advantage of two cells (8.4V), is that the Vin for the DC circuit is well above the emitter Vf, so the DC-DC circuit is bucking voltage, not boosting. The DC-DC circuits used in many budget single cell lights are more efficient bucking down to Vf than boosting up to Vf. Most run in direct drive when DC/DC Vin > Emitter Vf.

As far as lux/lumens go, a well designed DC-DC circuit can perform well at 3.6V. It all then boils down to cell capacity, which is where the 18650 wins.

Since a malkoff M60 can't run in regulation off 3.6V, 1x18650 is out of the question. This 18350 with its added capacity would be a nice step up for Malkoff owners, wanting smaller size than a 2x18500 setup.

Of course there are other parameters besides capacity to consider, which could weigh against the 18350 over the life of the cell and repeated charge/discharge cycles. I for one would wait to see some detailed reviews, output graphs and detailed measurements first, but thats just me.

 

[Sgt. LED]

Re: 18350 1200mAh for my M20 - all good!!!!

Please now let's not go and forget about the wonderful Malkoff M30!

 

[kramer5150]

Re: 18350 1200mAh for my M20 - all good!!!!

Please now let's not go and forget about the wonderful Malkoff M30!

I was wondering how many posts before someone mentions the M30

 

[Sgt. LED]

Re: 18350 1200mAh for my M20 - all good!!!!

I'll never let ya down man!

 

[Glenn7]

Re: 18350 1200mAh for my M20 - all good!!!!

Please explain the benefit over a 18650 with 2600MAH? Thank you.

Yes a good quality light should be able to regulate well for 1 or 2 cell's - but a flashlight that is made to take more than one cell will always be brighter running on two cell's - so half or more people will choose a brighter light over run time for general use.
For me the Olight M20 is only light I have designed to run on more than one battery - with a tube big enough to take 2x 16340,CR123,CR123A,RCR123 or one 18650 and of course the new 16350's (x2) - so if I can get at least 2000mAh or more out of 2x 16350's with the extra brightness I want =
Hope that helps.

 

[CM]

Re: 18350 1200mAh for my M20 - all good!!!!

Please explain the benefit over a 18650 with 2600MAH? Thank you.

If circuit is buck, then the light may or may not run in regulation depending on the buck circuit topology and LED Vf. If the circuit is buck boost, the benefit of an 18650 is capacity, and it is also a more common format. I have a drop-in with a very low Vf LED and it actually runs in regulation for about 10-15 minutes. If I put in a better regulator (sychronous switcher) then it will probably run about 30 minutes. Overall I prefer the 18650 format since it can be obtained from reliable sources like LG, Sony, Panasonic etc. and the actual capacity is more likely to be closer to the marked or advertised capacity. I for one do not believe the 18350 cells you have are 1200mAH. It's probably more like 600-700mAH.

 

[BMF]

Re: 18350 1200mAh for my M20 - all good!!!!

Originally Posted by Frankiarmz
Please explain the benefit over a 18650 with 2600MAH? Thank you.

Yes a good quality light should be able to regulate well for 1 or 2 cell's - but a flashlight that is made to take more than one cell will always be brighter running on two cell's - so half or more people will choose a brighter light over run time for general use.
For me the Olight M20 is only light I have designed to run on more than one battery - with a tube big enough to take 2x 16340,CR123,CR123A,RCR123 or one 18650 and of course the new 16350's (x2) - so if I can get at least 2000mAh or more out of 2x 16350's with the extra brightness I want =
Hope that helps.

I think you will only get max 1200mAh in series of 2 x 18350, right?

 

[kramer5150]

Re: 18350 1200mAh for my M20 - all good!!!!

I think you will only get max 1200mAh in series of 2 x 18350, right?

Yes... but only if the cell capacity of the weakest cell is 1200 mah.

-Two cells in series you double the voltage, while capacity of the pair remains the same as the single cell.

-Two cells in parallel you double the capacity, while the voltage of the pair remains the same as the single cell.

:twothumbs

 

[Glenn7]

Re: 18350 1200mAh for my M20 - all good!!!!

Yes... but only if the cell capacity of the weakest cell is 1200 mah.

-Two cells in series you double the voltage, while capacity of the pair remains the same as the single cell.

-Two cells in parallel you double the capacity, while the voltage of the pair remains the same as the single cell.

:twothumbs

Yes what was I thinking :thinking: you are correct (I need a coffee )