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what battery will be built at the gigafactory?

what battery will be built at the gigafactory?

i assumed they will stick with the NCA type but i read a recent article in the march 16th, 2015 edition of chemical and engineering news that they will build lithium iron phospahte (FPO) batteries. i havent heard this before. do any of you know more about this?

the article is called "batteries and the power business" but i cannot find an electronic copy to share here. FPO is cheaper, safer and not much less dense. i always wondered why they did not adopt it in the first place.

logicalthinker | 27 marts 2015

No one on this forum has inside knowledge. I strongly doubt iron phosphate. I own an electric bike with iron phosphate batteries and while more heat tolerant, they are *substantially* less energy dense.

logicalthinker | 27 marts 2015

Lithium iron phosphate.
Prodeco Phantom X2.
www.Prodecotech.com

TeoTeslaFan | 27 marts 2015

I don't know what chemistry they will use but JB said it will have 10-15% higher energy density. Check opening message of first topic below. If lithium iron phosphate is less dense, then obviously that's not going to replace the current cell.

http://my.teslamotors.com/forum/forums/list-tesla-videos-20-minutes#comm...
http://my.teslamotors.com/forum/forums/new-pdf-files-about-current-model...

TeoTeslaFan | 27 marts 2015

Sorry, the first link above is the wrong link. Here is the correct one: http://my.teslamotors.com/forum/forums/predictions-new-battery

georgehawley.fl.us | 27 marts 2015

Higher energy density is a requirement. They will also play around with cell form factor as well to get total energy up in a way that preserves the outer dimensions of the battery pack assembly.

Adjusting electrolyte chemistry is tricky because each little addition or change to the formula engenders a host of tests that take a long time to complete. Electrode changes may be easier. Don't know.

Remnant | 28 marts 2015

The very fact that Tesla has been building the huge SC infrastructure shows it does not expect a battery revolution any time soon. If such a revolution does happen though, it will a surprise for all of us. Batteries are likely only to develop incrementally, a little less weight, a slightly smaller size, a little more energy, a little faster recharging speed.

There is also the issue of retrofitting. As we've just seen with the Auto-Pilot, a significant proportion of the current MS owners would rather put off Tesla innovation than accept to be left behind in the technology they have. Tesla will have to take this primitive jealousy into account with every innovation it tries to introduce.