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From: Hal on 16 Feb 2010 10:14
On Mon, 15 Feb 2010 13:21:40 -0500, "Elmo P. Shagnasty"
<elmop(a)nastydesigns.com> wrote:

>I was speaking hypothetically. However, "starting" the Prius doesn't
>engage a starter motor; the only thing to "start" is the computer. It
>needs to come up to a Ready state, at which point it opens the relays
>and allows the drive system to operate. The drive system includes the
>big traction battery.
>
>So, there's no large power source needed to turn the starter motor.
>Turning the computer on and opening the relays requires about as much
>electricity as a potato generates, really. Just about any 12v source
>can make that happen.
>
>And once it happens, the drive system can charge the car's 12v battery
>back up--just like any other car's drive system can.

Thanks for explaining! I'm hoping I won't have to leave mine sit
idle long enough for it to die. However a couple posts here about
needing a jump on older models, did make me wonder.

Regards,
Hal
From: Al Falfa on 16 Feb 2010 10:50


"TKM" <no.mail(a)no.net> wrote in message
news:hle76u$t5l$1(a)news.eternal-september.org...
>
> "Elmo P. Shagnasty" <elmop(a)nastydesigns.com> wrote in message
> news:elmop-FFEFDA.13472514022010(a)nothing.attdns.com...
>> In article <hl9c1h$gkv$1(a)news.eternal-september.org>,
>> "TKM" <no.mail(a)no.net> wrote:
>>
>>> One thing we learned about our 2006 Prius though when we left the car
>>> parked
>>> for several weeks is to turn off the switch (near the steering column)
>>> that
>>> powers the remote key system. The battery (the small one in the rear,
>>> not
>>> the power battery) was flat when we tried to start the car and we needed
>>> a
>>> jump start to get the car going.
>>
>> a) that's one reason it's nice to have a simpler car, like my Prius
>> without that
>>
>> b) fortunately, you really only need flashlight batteries to "jump" the
>> Prius into opening the relays and activating the 201v electrical system.
>
> Clever, but it makes sense. Relays don't take much power. Any idea of
> what the voltage has to be? A 2-cell flashlight is only 3 volts and the
> Prius battery is 12 volts.
>
> TKM
12V


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