Posted by bwilson4web on April 22, 2011, 9:01 am
It is wonderful in my neighborhood. I can listen to the birds, the
insects and the sounds of children playing. Quiet is also called being
a good neighbor.
Then at speeds above 20 mph, the tire and air noise blankets the
outside sounds and on the highway, we're back in normal mode. I don't
really notice the engine except under high power modes ... passing,
steep grades, and on-ramps. But in Europe, they do highway noise
testing and the Prius is in the quietest 10%.
Posted by bwilson4web on April 20, 2011, 11:05 am
. . .
It is a $0 battery that works in the Prius because as you'd already
pointed out, there are just a few relays and switches to close. The
battery does not have to handle the 100s of amps needed to turnover an
Posted by David T. Johnson on April 12, 2011, 4:17 pm
Elmo P. Shagnasty wrote:
Well, you might actually be right about that. I knew that the Prius
auxilliary battery was a small lead-acid battery and was presumably
inexpensive but had not actually priced one of them. After doing that,
yeah, they are over a $00 to replace. If it has a low demand, it's
only because they are not failing in large numbers, probably for the
reason I mentioned previously which was that the auxilliary battery is
not used to start the Prius whereas in in a non-hybrid car it is.
Starting an engine is a heavy current draw and presumably shortens the
battery life. If the Prius auxilliary batterys do eventually fail in
large numbers, I would expect that the price would come down as there is
nothing different about the Prius auxilliary battery compared with many
other small lead-acid batteries and competition would probably bring the
price down to the $0 dollar range.
Posted with OS/2 Warp 4.52
and Sea Monkey 1.5a
Posted by Elmo P. Shagnasty on April 12, 2011, 10:19 pm
You are inventing things out of thin air.
It's so small for exactly the reason you describe--because Toyota sized
and designed it for exactly its duty in life.
In other words, that battery is exactly analogous to the other 12v car
battery people think of--it has the same capacity relative to its bigger
brother, proportioned for its duty, and it has the same life.
Toyota did not make something that was more expensive than it had to be,
just because this was a Prius.
Posted by David T. Johnson on April 13, 2011, 2:07 pm
Elmo P. Shagnasty wrote:
Neither you nor I know what the capacity of the Toyota auxilliary
battery is, nor do we know what its duty is, nor do we know what its
service life will be. The only guide we have for life is what other
prius owners are experiencing and I am in the forefront on that as I am
the owner of a 2nd gen prius with not that many owners in front of me.
So far, my auxilliary battery is fine. The enemies of lead-acid
batteries are deep cycling, cold, and time. The prius auxilliary
battery would only deep cycle if someone leaves a light on for an
extended period. If you don't do that, it will never deep cycle.
It's a little surprising that toyota even sells the auxilliary
batteries. For example, I would never go to a Ford dealer to buy a
battery for a Ford. If replacement of the prius auxilliary batteries
becomes widespread (so far that does not seem to be the case) then I am
sure that the national auto parts chains like CarQuest, O'Reilly, NAPA,
etc will begin stocking a replacement part and it will likely be much
cheaper than the $12 price.