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Charge Issue - Page 2

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Posted by Michael Dobony on June 25, 2012, 4:38 pm
On Mon, 18 Jun 2012 19:33:32 -0400, Elmo P. Shagnasty wrote:

But the traction battery charges the 12v, and therefore affects the HV,
pulling a charge from it and requiring charging rather than used for
traction. This is why a weak 12v can affect gas mileage. The first few
miles puts a tremendous drain on the traction battery. I can start the car
with 3/4 charge and be down to 2 bars in a few miles. After that it's fine.

Posted by Elmo P. Shagnasty on June 25, 2012, 10:52 pm

I broke this part of the quote out because you said, unambiguously, that
"when the vehicle is off it can still drain the HV battery, trying to
charge a bad 12v".

Now, I don't know what form of English you learned, but what you wrote
is plain and unambiguous.

You said that when the vehicle is off that it can still drain the HV

To which I replied:

Then for some reason you come back with a total non-sequitur, talking
about how the traction battery charges the 12v:

That was never the point of discussion and has nothing to do with the
fact that what you said was incorrect--and that when the vehicle is off
it CANNOT by definition drain the HV battery.

Posted by Daniel who wants to know on June 19, 2012, 5:26 am
The HV relays are only closed and the DC-DC converter in the inverter
assembly is only active when the READY light is on, hence as the other 2
said it doesn't supply the 12v with the car off (or in ACC and IG-ON modes).

Posted by walt m on June 19, 2012, 4:00 am
 On 6/16/2012 1:45 PM, Michael Dobony wrote:

It can't hurt to go somewhere and have the small 12v battery tested.  It
shouldn't drain the HV battery that quickly under normal circumstances
if the car is on and not moving.

Posted by Michael Dobony on June 25, 2012, 4:35 pm
 On Tue, 19 Jun 2012 00:00:06 -0400, walt m wrote:

Where? The Prius 12v can't be tested with a normal tester and I don't trust
my Toyota dealer. The oil was a quart high (Chevy dealer I bought the car
from) and when I took the car in to the Toyota dealer they claimed to have
checked all the fluid levels, but failed to notice this major discrepancy.

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