12 volt battery question

Complete BS.
Think of it like a bucket of water with a hole in it. The CCA is the SIZE of the bucket (contents/amperage), and voltage is the size of the hole (delivery) + the 'fill'. You can have a big bucket but if it does not have a decent fill it won't work.

The CCA just sit there, doing nothing unless there is demand for them, then they deliver what is needed as long as the battery is in sufficient condition to do so. Does not matter if it is larger than 'required'. That's just insurance.

I think you need a different dealer. Sounds like you got a short somewhere.

 

Did their tester show the measured CCA?

You can cut through a lot of the Gordian Knot of battery condition, with something DIY level like Solar BA5. The new iteration is BA9, around $52 (US) on Amazon.

 

Open,

The dealership is totally full of crapola. No 12v battery in the world is going to have a CCA that is too high and shorts out the dash. This is absolutely ridiculous and makes no sense at ALL. A brand new toyota "sks car" 12v battery is rated for 325 cca and will test at around 475-525 cca. I have a 2015 non-sks Prius battery in my garage that I keep as a "just in case" spare. It's rating is for 272 cca. This morning, I happened to test it while cleaning the garage. It tested at 350. My actual battery in the 2007, an hour ago, with a 325 cca rating, tested at 425, and it was manufactured 10/26/2011. I would love to see them do a load test on a NEW battery and then explain why it tests higher than 450, as I know it will.

Since they tried to tell you the battery voltage is too high, ask them to explain why the battery is at ~12.8, but when you ready the car it goes to about 14.1 due to the inverter powering the 12v bus. Why doesn't that cause a problem? OMG, I would have a field day with these fools. I would have that service advisor crying and begging for help.

ALL your symptoms are exactly what happens when 12v is disconnected from the car. I would think the more likely problem is a poor connection between one of the battery terminals and the car. You are losing the (-) connection at the battery or where the cable connects to the chassis, OR you are losing the (+) at the battery connection or at the underhood fuse box where the cable connects to the jump point.

If you disconnect 12v from the car you will...
lose radio presets
lose the auto up/down function of the driver window
gas level indicator will default to one blinking dot until it calibrates itself.

I would also have them show you the water pump leak. Typical evidence of seepage is a small amount of dried up pink residue on the inside of the water pump pulley. This is SEEPAGE and is insignificant. I've seen it on MANY prii. All I do is let the owner know to look at it now and then, like when they check oil and coolant levels, to make sure it's not wet. If they can show you DRIPPAGE, then I would look at replacing it.

They're trying to soak you for $1200 so far and haven't even solved the problem you went there to have them look at.

 

This is a load of nonsense. The voltage is separate from the cranking amps, and they didn't specify the voltage. The only way the voltage could get too high is if the charging system were malfunctioning, and that would happen to either the currently installed battery or to a replacement battery.

I would just step away from this dealership, and find a shopt that is competent. These guys are fishing through your wallet.

 

another poster with detailed 12v data of 'fine'

 

My goodness the horseshit the dealer can come up with. Sorry you battery is bitchin' and has loads of current available if need be. That's a terrible thing as that great capacity will sometimes hurt you, because its a monster just waiting to get out.



Sorry.

 

I remember several threads from back in my Gen II days concerning the short negative terminal cable that runs from the battery to a ground point on the inside tailgate below the hatch. I would remove the negative cable clamp from the battery and then remove and clean - if need be - this connection point to the vehicle body. Any rust or contaminants here or a loose connection can result in poor charging and a host of other electrical problems.

 

Not to be nosy but are you a woman? This seems to be the type of behavior dealers do with women.