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Discussion Starter #1
Hi all,

So over the last couple of weeks, I've been testing these PHET
PE-1150 lithium cells, and I just have to say.. they're not nearly as
good as PHET claim. For the benefit of others, I've written up the
results here:

http://www.zeva.com.au/phet/

In short, don't buy them if you want higher than 2C. *sigh*

Well, if anyone can point me towards some LiFePO4s that can handle
10C continuous (and that I can actually buy.. are you listening,
A123!?), do let me know.

Ian Hooper
[email protected]

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Discussion Starter #2
Ian, unfortunate the results are not good for PHET cells,
what are the costs you've been quoted? Perhaps with a suitable
capacitor bank, the low discharge rate can be OK, if their cost can
justify the additional cost of the capacitors.

Still looks to me that the IB NiMH cells are the best cost-effective
choice for 10C discharge batteries for EVs.

Jack

Ian Hooper wrote:
> Hi all,
>
> So over the last couple of weeks, I've been testing these PHET
> PE-1150 lithium cells, and I just have to say.. they're not nearly as
> good as PHET claim. For the benefit of others, I've written up the
> results here:
>
> http://www.zeva.com.au/phet/
>
> In short, don't buy them if you want higher than 2C. *sigh*
>
> Well, if anyone can point me towards some LiFePO4s that can handle
> 10C continuous (and that I can actually buy.. are you listening,
> A123!?), do let me know.
>
> Ian Hooper
> [email protected]
>
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>


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Discussion Starter #3
I was afraid of that. there probably is a reason why their spec sheets
doesn't say the high discharge rates they claim behind the scene. bastards
Marcin will probably arrive at the same conclusion despite his initial
enthusiasm.

Yet another hope squashed

Good work though

Dan


Ian Hooper wrote:
> Hi all,
>
> So over the last couple of weeks, I've been testing these PHET
> PE-1150 lithium cells, and I just have to say.. they're not nearly as
> good as PHET claim. For the benefit of others, I've written up the
> results here:
>
> http://www.zeva.com.au/phet/
>
> In short, don't buy them if you want higher than 2C. *sigh*
>
> Well, if anyone can point me towards some LiFePO4s that can handle
> 10C continuous (and that I can actually buy.. are you listening,
> A123!?), do let me know.
>
> Ian Hooper
> [email protected]
>
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>
>

_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev
 

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Discussion Starter #4
Dan,

for me PHET are running just fine. I've replaced 50Ah Kokam's cells with 42
parallel blocks of 16850 1.2Ah and all I see is performance BOOST.

At least I've some EVs running and MANY Battery Packs operating with different
cells manufacturers. I event tested TS LFP cells recently and slowly
beginning to believe in their performance.

And what do you have?

Enjoy your miserable troll-life.

If anyone will be passing through Warsaw/Poland I invite him to visit and see
for himself our cars.

Marcin

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Discussion Starter #5
so your data will be different from Ian Hooper's?
yours will show they work fine at 10C?

you said you have been testing. can we see the data?

Dan

Marcin Ciosek wrote:
> Dan,
>
> for me PHET are running just fine. I've replaced 50Ah Kokam's cells with 42
> parallel blocks of 16850 1.2Ah and all I see is performance BOOST.
>
> At least I've some EVs running and MANY Battery Packs operating with different
> cells manufacturers. I event tested TS LFP cells recently and slowly
> beginning to believe in their performance.
>
> And what do you have?
>
> Enjoy your miserable troll-life.
>
> If anyone will be passing through Warsaw/Poland I invite him to visit and see
> for himself our cars.
>
> Marcin
>
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>
>

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Discussion Starter #7
just talked to Ian
a A123 cell test is coming up for comparison to the phet cells to ensure
we are not unfairly dismissing the phets

Dan

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