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12 volt aux battery (testing a theory) - PriusChat Forums

by youngnbald

I believe the battery is causing these errors. If I turn the car to ACC. and wait, I am getting the battery to have a chemical reaction and it becomes a bit stronger for the next try which then is enough to clear my codes and work correctly. I don't know how to explain the battery theory, but my dad taught me this for starting a car in below zero temps here in the mid west. The car will crank stronger if you let it react on ACC. for a bit then try to start the car verses an immediate try. Once the Optima battery is in place, I will test the voltages again and compare the results of new and old. I am curious if the errors will go away also. It is consistant and I should have immediate results. The current battery looks like the original brand for a Prius and I am curious what year the battery was replaced or if it is original? I just bought this car and I am finding many original parts at 224,000 miles. I can't believe the battery is original, but will find out soon. There should be a manufacture date on the batteries correct? With no electrical accessories on including lights the voltage should be fluctuate between 12.2 and 11.9. The lower the voltage, the less of a charge your battery currently has. If the voltage is low do not proceed as the load test might totally discharge your battery. (If you see a voltage around 13.5-13.8 you are seeing voltage from the high voltage battery being converted to around 13.5-13.8 in an attempt to recharge your battery. This normally does not occur till after you start the engine but might occur earlier if the battery is very drained.) Is this a defective battery with 11.6 on load? I wonder if I jumped the gun and bought the Optima. I would like this car to run for awhile and doing the preventative maintenance seems to be where to start. I believe the Optima will ensure a long life but wonder how far this battery would stretch. If the codes go away, I made a great call. Until then, what did this voltage checking tell...

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Motorz TV Partz: OPTIMA Batteries

Chris Duke from Motorz TV www.motorz.tv presents Partz: OPTIMA Batteries www.optimabatteries.com This segment is part of episode 32 of Motorz TV ...

How many Volts is a Optima Yellow Top Battery?

Oct 14, 2007 by Jay | Posted in Car Audio

Can anyone tell me the exact voltage of a Optima Yellow Top Battery?

12 volts