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Re: [EVDL] Phd in Materials Science on LiFePO4 batteries video WAS: Lithium 60ah 144v

Yes, if you watch the whole video from Jay Whitacre and you read and/or
watch what Jack says then you'll see that the two of them really aren't
actually saying the same thing. But Jack is stubborn and I do not see any
way that he'll ever change his mind no matter how much anyone else says or
does. In reality Jack has some good points and some of what he says should
be taken to heart. But his anti-BMS rage is so strong that he loses all
peripheral vision and plows straight ahead with his preconceived notions.

For instance, Dr Whitacre says to parallel all cells and run them past the
knee one way or the other. Jack says to just slap all of your cells together
and not do any balancing. Which is it? Do you trust the guy with the PhD?
The guy with the PhD says that, from an engineering standpoint, it is best
to do cell level monitoring. In fact, he says that DIY people SHOULD be
doing cell monitoring. He just says that large manufacturers do things
differently because of their volume. Jack says it's worthless. Dr Whitacre
specifically says that he used monitoring systems in the things he put
together. (He says he monitored bundles at a time though) Jack apparently
thinks he's wrong to be doing that. Some of the differences are subtle but
the end result is that if you watch Jack's videos and you watch Dr
Whitacre's video you will see that the two are not really saying the same
thing. Some of the points are the same and some are not. But it seems like
Jack is using the Whitacre video to claim that they agree. They actually
don't seem to if you are paying attention.


2010/12/12 Cory Cross <[email protected]>

> David Nelson wrote:
> > This blog entry [Jack Rickard's] has an excellent video about LiFePO4
> batteries. I
> > recommend that every one watch it if they even have a remote interest
> > in these batteries. Here is a quote from the blog about the professor:
> >
> As usual, jack went off half-cocked on his quest to prove that if he
> can't make a good BMS, then obviously no one can. Here's a explanation
> posted on
>
> http://www.diyelectriccar.com/forums/showthread.php/lecture-lifepo4-cells-52773.html
> by Dmitri:
>
>
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