Best, highest capacity, protected 18650 cells?

[etc]

I need something with at least 2500 mAh in 18650 cells.

I know Panasonic makes these 2900 mAh cells which would really rock except that they don't appear to be protected.

 

[chewy78]

ive got wolfeyes 18650's, they seem to be reliable

 

[CM]

...I know Panasonic makes these 2900 mAh cells which would really rock except that they don't appear to be protected.

Got any links on where you can get these Panasonics?

 

[jeffosborne]

Tenergy makes good batteries:

http://www.batteryjunction.com/2600pcb-18650.html

2600mAh with protection.

Jeff O.

 

[linterno]

Tenergy is well known to over-rate their batteries.

 

[etc]

Got any links on where you can get these Panasonics?

There are a couple of posts/threads about them on the current page of "Batteries"...

 

[Bullzeyebill]

There are a couple of posts/threads about them on the current page of "Batteries"...

Pretty much need a group buy to get these at a good price. 100 min order, if I recall.

Bill

 

[mdocod]

Wolf-Eyes, AW, or Pila protected cells are your best options for loose cell flashlight operations. If you are building a pack and are going to provide external protection, then Panisonic, or LG are good solid options.

Why do you *need* 2500mAH capacity?

Wolf-Eyes just released a 2400mAH rated LRB-168A, I have not seen any independent testing to validate the label capacity at this time.

AW is supposedly coming out with some 2500mAH rated protected cells in the coming months.

Tenergy 2600mAH cells are not 2600mAH, they don't really perform any better capacity wise than a typical 2200mAH cell from what I recall reading.

I have heard that the TrustFire 2500mAH blue wrapper protected 18650s supposedly perform close to rated capacity, but based on the rather flakey issues with ordering cells from DX/KD, I can't really recommend it but would like to point it out as an option as they might work for your needs...

Eric

 

[etc]

higher capacity --> greater runtime.

 

[etc]

I don't hear much about Pila cells here. I understand they are expensive... they are protected.

 

[linterno]

I don't hear much about Pila cells here. I understand they are expensive... they are protected.

Very expensive. It is AW age now.

 

[etc]

Wolf-Eyes just released a 2400mAH rated LRB-168A, I have not seen any independent testing to validate the label capacity at this time.

AW is supposedly coming out with some 2500mAH rated protected cells in the coming months.

Is the W-E cell protected?

I am waiting for the AW 2500 mAh cell... it would present a large jump from the 18500 cell of 1500 mAh capacity.. I don't think it's worthwhile to upgrade to 2200 mAh cell.

 

[yellow]

with the power we take from the cells, dont calculate with more than 2000-2200 mA to get,
no matter what cell used

 

[etc]

I don't get this, please clarify?

 

[Norm]

Is the W-E cell protected?

Yes

 

[chewy78]

w-e 18650 cells have a robust pcb but they do have a flat top.

 

[yellow]

I don't get this, please clarify?

most all of these "values" get achieved by a low current taken from the cells.
We with our "high" draw, put much more stress on the cells, the data is not received most any time (considerably not received).

thats why f.e., in Ni-Mh, those lower numbered Eneloops (2100 mAh) instead of the much higher supercells (2700 mAh and such) usually outperform them.
With 1A and plus draw, the higher rated ones are less stable ...
Same goes for Li-Ion, but the difference is not this big.

Anyways, I would also look for the better ones like cells from AW and such, over very cheap offerings. Even when the latter ones show a higher number.

PS: true, most "protected" cells have flat tops. One can use small magnets then to close the circuit.
AW offers buttoned cells also, iirc

 

[GMUGNIER]

I read that Panasonic now offers 4000 mah 18650 batteries and they are protected by a heat film and a cover/under charge circuit. Can anyone confirm? I am on the Panasonic web site now and I just cant seem to find out where to buy them.

 

[GMUGNIER]

Three technologies to watch in 2011: silicon anodes, ambient energy harvesting, and very low power wireless

If there is a Cinderella in the battery world, it is the lithium ion anode.

No glamorous metal oxides to develop, nor cunning structures to optimise, just gradual developments in two sorts of carbon.
< A HREF="http://adserver.adtech.de/adlink|289|101380|1|277|AdId=5996174;BnId=3;itime=976247057;nodecode=yes;link=http://ad.doubleclick.net/jump/N4481.electronicsweekly.com/B5176375;sz=336x280;ord=976247057?">< IMG SRC="http://ad.doubleclick.net/ad/N4481.electronicsweekly.com/B5176375;sz=336x280;ord=976247057?" BORDER=0 WIDTH=336 HEIGHT=280 ALT="Advertisement"></A><a href="http://adserver.adtech.de/?adlink|2.0|289|101380|1|277|;grp=109;loc=300;" target="_blank"><img src="http://adserver.adtech.de/?adserv|2.0|289|101380|1|277|;misc=84619;grp=109;" border="0" width="2" height="2"However, 2011 looks like it might just be the year when the fairy godmother turns up and anodes go silicon.
It has long been known that silicon can absorb nearly 10 times as much lithium as carbon, but this has not been much use because the silicon swells so much that the electrode falls to pieces.
Oxfordshire-based Nexeon has quietly been working on a Nanostructured form of silicon that can repeatedly cope with plenty of lithium, and can be made in bulk.
<a href="http://adserver.adtech.de/?adlink|2.0|289|1407324|1|277|;grp=109;loc=300;" target="_blank"><img src="http://adserver.adtech.de/?adserv|2.0|289|1407324|1|277|;misc=84619;grp=109;" border="0" width="2" height="2" /Just before Christmas, Nexeon revealed a prototype silicon anode 18650-size cell that it claimed not only exceeded the capacity of commercial cells (at 3.2Ah with C/3 discharge), but beat them on cycle life as well.
It predicts 4Ah cells later this year.

 

[mrlysle]

As far as I know, right now, present time, the best available in a protected format would be the AW or Redilast 2900 mah cells.