PANASONIC 18650 2900mah

[PsychoBunny]

I have heard these are very good batteries.
I have not been able to find them online, are they avilable
for sale? Does anyone have experience with these?
Do they have the raised nipple on the + end to make contact
when in series?
I would like to try them for my up-coming FireSword, which
uses 4 18650's stacked.

 

[Phaserburn]

I think xpea is going to be sourcing them for us. I believe he will be posting a sale thread next week.

 

[PsychoBunny]

I think xpea is going to be sourcing them for us. I believe he will be posting a sale thread next week.

I dont know who that is Phaserburn, is that a member who sells on
the forum?
Are these only available in Japan right now?

 

[jirik_cz]

Check this thread http://www.candlepowerforums.com/vb/showthread.php?t=217485

 

[maxilux]

There is an other thread about Panasonic 18650:

http://www.candlepowerforums.com/vb/showthread.php?t=212415

 

[PsychoBunny]

Thanks for the links guys.
It doesnt look like these will ever be available to the consumer :(

 

[phantom23]

These will be available on CPFMP maybe next week (at lower price than AWs).

 

[Burgess]

:popcorn:

_

 

[LEDAdd1ct]

These will be available on CPFMP maybe next week (at lower price than AWs).

Please bear in mind that they are most likely *not* protected, and that carries all the risks that are spelled out all over these forums. I am not trying to troll and eagerly anticipate the cells; however, please be aware of the dangers. :thumbsup:

 

[jirik_cz]

They are not protected but unlike common LiCoO2 these are LiNiCoAlO2 and should be safer.

 

[PsychoBunny]

They are not protected but unlike common LiCoO2 these are LiNiCoAlO2 and should be safer.

Yeah I have read that the chemistry is supposed to be safer
and I would not hesitate to use them in a application where
only 1 or 2 stacked were being used, but 4 stacked would make
me nervous. In that case, I would practically insist on protected.

Do you agree, or disagree?

 

[maxilux]

I have many unprotected 18650 in use, never problems with them only with the protected.

 

[neoseikan]

If they are cheaper than AW's, then, which one will be better, or have a larger real capacity?

 

[PsychoBunny]

Will the extra capacity make the light brighter or just extend
the run time?

 

[jirik_cz]

Yeah I have read that the chemistry is supposed to be safer
and I would not hesitate to use them in a application where
only 1 or 2 stacked were being used, but 4 stacked would make
me nervous. In that case, I would practically insist on protected.

Do you agree, or disagree?

I have couple of unprotected li-ion cells (LiFePO4 and IMR) and it is very easy to overdischarge them in regulated lights. Even if you use only two in series. So I would recommend to be carefull and recharge rather sooner than later :)

Will the extra capacity make the light brighter or just extend
the run time?

Regulated lights - extend runtime.
Direct driven lights - brightness might differ, depends on the voltage under load.

AFAIK these Panasonic cells have slightly lower voltage under load, but can be safely discharged down to 2,5V.