Anyone ever see a 26650 battery?

[quasimod]

I've hit a couple of those forums from links to specific threads, but do you know of any particular threads analogous to Battery Universities' comprehensive discussions, ECF info "sticky threads", or the ECF Library? I know that's something I should just go look for, but I'm leery of getting involved in another forum... I'd have to quit my job and devote my life to the Internet.

 

[emonty]

I've hit a couple of those forums from links to specific threads, but do you know of any particular threads analogous to Battery Universities' comprehensive discussions, ECF info "sticky threads", or the ECF Library? I know that's something I should just go look for, but I'm leery of getting involved in another forum... I'd have to quit my job and devote my life to the Internet.

For Example to bypass a lot of discussions concerning LiefPO4 batties check this out:
Lithium iron phosphate battery - Wikipedia, the free encyclopedia

 

[Wafflestomper]

That is a good link, however is old and somewhat out of date in terms of what is on the market now and who produces it.

Have you ever checked out Welcome to Battery University ?

Yeah I went there, some good stuff...some complicated lol.

I did get some links and information, Im on the laptop now so Its a pain in the but to work on, when I get back from the gym (lol) I'll post them.

Basically it sums up that the chemistry in LiMn is ideal for high drain low resistance situations, and over discharging them will really only decrease battery life. Which can be expensive if you aren't diligent.

Basically I gleaned from it, regardless of the chemistry, the chances are very slim that you are going to have a catastrophic event, as each style of battery has its safety measures. With LiIon its the protection circuit, with the others it has internal safety measures.

Buy quality batteries from reputable vendors, if you use Li-Ion they outta have a protection circuit.

Here is some information I received from a friend who has explained these things in terms I could understand. Out of courtesy, I won't post his name, unless he wants to come and take credit for it, as it was in a private message. He also provided helpful links.

yeah the high drains are safer because of their structure, they can also handle much higher heat as well as the discharge rate/Amp draw required by a LR atty...
particularly the 16340 size (the 18650 size really isnt a concern)...the amp draw of a LR atty at 3.7V is around 2.7A...at best the max discharge rate of a AW Li-Ion 16340 is 1.5A so that battery is overstressed which will damage the battery and prep it for failure...versus the high drain which is capable of up to 4.4A...
yes there is no PCB in the high drains which means at worst you can over drain the battery which might get to a point where the battery wont take a charge at all..
However, there's also an issue with the Li-Ion where a faoulty charger or static electricity could actually short out a PCB in a Li-Ion with no indication to the user...and that over discharge could have caused plating to build up on the cathodes in the battery preping it for failure...
So now we're down to a Li-Ion and a LiMN that has the same amount of protection (because there are 3 levels of protection in the batteries)... the Li-Ion hits thermal instability at 302 farenheit..the manganese at 482 farenheit....the remaining safty features should stop that before the batteries get to that level unless of course their no name batteries that have skimped on that protection so then it comes down to the venting...Li-Ion batteries create their own oxydizer so they vent with gas and then flames....where the Manganese don't create an oxydizer so they only vent gas...in either case the PTC should catch it before then and stop it..
here: Lithium-ion safety concerns http://www.batteryuniversity.com/partone-5B.htm

in the section titled Safety level of lithium-ion systems
it covers a portion of how they are safer...

and The high-power lithium-ion
explains the difference in structure of Li-Ion and LiMN http://www.batteryuniversity.com/partone-5A.htm

And if I may be so bold as to re-rail the thread:

How about those big honking 26650 batteries eh?
Sure would be awesome to carry that do a Vegas lounge and show everyone how awesome we are!!!