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post #1 of 8 (permalink) Old 01-09-2007, 11:26 AM Thread Starter
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Default Li Ion battery replacement for 2004 Prius?

Is anyone offering a Li=Ion battery replacement for the 2004 Prius?
I'm thinking more power in the same size pkg as stock battery.
Thanks
MDR
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post #2 of 8 (permalink) Old 01-09-2007, 12:43 PM
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A direct sub for a Li-Ion battery could be a problem, since the optimal charging/discharging algorithm is different than for a NiMH. The HV and HV Battery ECUs would probably need reprogramming. Granted, the way the Prius handles the charge/discharge cycles, it may not matter much.

The other problem with a standard Li-Ion battery is safety. Li-Ions have a strong potential to combust when something goes wrong, like a short. Now there is a new manufacturing technique that was developed to minimize this danger, but I don't think it is quite ready for installing into vehicles on a mass scale yet.
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post #3 of 8 (permalink) Old 01-09-2007, 02:07 PM
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I was also wondering if, down the road, Toyota would offer a newer battery technology (along with a required S/W update), or just leave them alone. I expect the answer is no, since it might require EPA tests to prove it still meets the smog regs. Also, it would undermine new car sales for Toyota.

I am resigned to a car that will have "stale" technology in a few years. But since I keep cars forever, I'll just have to "settle" for 45-50mpg!

2005 Seaside Pearl, BC#6
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post #4 of 8 (permalink) Old 01-09-2007, 06:30 PM
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Maybe the Prius+ would be worth looking into.

http://www.calcars.org/priusplus.html
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post #5 of 8 (permalink) Old 01-09-2007, 07:52 PM
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Understand the conversion is about ten grand. How much for just the "DECALS?"
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post #6 of 8 (permalink) Old 01-09-2007, 11:26 PM
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Quote:
Originally Posted by KTPhil
I was also wondering if, down the road, Toyota would offer a newer battery technology (along with a required S/W update), or just leave them alone. I expect the answer is no, since it might require EPA tests to prove it still meets the smog regs. Also, it would undermine new car sales for Toyota.

I am resigned to a car that will have "stale" technology in a few years. But since I keep cars forever, I'll just have to "settle" for 45-50mpg!
I believe Atilla asked the Toyota engineers and recieved the answer.
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post #7 of 8 (permalink) Old 01-10-2007, 11:04 PM
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And the answer was...........?

2005 Seaside Pearl, BC#6
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post #8 of 8 (permalink) Old 01-12-2007, 08:41 PM
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This may offer a clue to what maybe available soon.
http://www.bradenton.com/mld/bradent...l/16406352.htm
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