Anybody running Nanophosphate's?

[BadTurtle]

The worlds most dangerous Batt!! OMG!!!

Check this out.:mrgreen:
http://www.metacafe.com/fplayer/788668/worlds_most_dangerous_battery.swf

 

[Scattman]

And your point is? Anybody can burn one down on purpose.

I have been running lipo's for years with no issues.

 

[BadTurtle]

No house fire.

I know that video link is a little overkill:roll: but the A123 Nanophosphate's wont catch fire. I use Lipo's in my small R/C planes and love the light weight and long run times, but I have witnessed fellow R/C pilots planes smoke up and catch on fire. Not much left of a balsa wood park flier fire balling into the ground.

 

[BadTurtle]

Lipo Power is HOT!

All of us have used Li-poly batteries in our R/C vehicles at one time or another. They are good batteries but can be touchy and highly volatile. If you have cooked a pack than this shirt is for you!

 

[JohnRobHolmes]

a123's can actually catch fire. They won't continue to burn up the whole pack, but elements of the pack (like plastic and paper) can still ignite. Just had a buddy catch his ass on fire (literally) riding a LiFe pack on his Ebike. The pack didn't totally burn down like LiCo would have, but it sure as hell still caught on fire.


Dont take me as just a naysayer here, I have about 200 a123 M1 cells in use right now. They just aren't all upside by any means.

 

[BadTurtle]

Pro's and Con's

Yes, Mr. Holmes. Everything has it's pro's and con's. Was that E bike motor one of those brushless hub motors? Those are really nice. Please tell us why people that build E bikes prefer to use Nanophosphate batteries over another kind.

 

[JohnRobHolmes]

I have bikes with both divorced motors and hub motors, and the batteries tend to travel around to what is needed. The LiFe chemistry seems to be a bit more tolerant of over discharge and charge, but it does get damaged each time just like LiCo. I use M1 cells because they were a pretty good deal (at the time) and the incidence of thermal runaway with 3/4 kilowatt/hour packs is not something I always want to deal with. I don't like them because they weigh 50% more and voltage sag pretty badly under load compared to a similar LiCo of 25c discharge. There are some bootleg 15 and 20 amp hour LiFe cells available that are much better on voltage sag, but I don't have $750 to drop on more toy batteries :lol:

Having used and studied both types of chemistries I tend to grab the LiCo packs more often. I will probably run LiCo on all of my RC cars, and on my electric race bikes (unless I get some of those bootleg cells). In transmitter packs or 12v DC sources the LiFe has a better voltage profile, and I find it safer for situations where the pack may be indoors and in large quantity together (ebike commuter stuff or backup power). Many people choose LiFe for commuter bikes for this reason, especially considering the long shelf life. It really boils down to the importance the user places on the factors, and what service the battery will see.

 

[BadTurtle]

Nanophosphate World speed record!

In 2007 the killaCycle team broke the electric world speed record using A123 Nanophosphate batteries. Their drag bike did the quarter mile in 8.168 sec at 155.78 miles per hour! Here is the link. It is interesting reading.

http://www.manufacturingcenter.com/dfx/news/archive/04-24-2007/stories/feature-5.asp