3G Hybrid Battery Voltage?

Are you having any issues?

Codes being displayed?

How are you reading the voltage?

How many miles on your Prius?

What is the state of charge showing for that voltage?

 

Your battery pack is made up of 28 module that stay around ~7.5 volts of charge. These modules are made up of 6 battery cells, which are not that much different than a rechargeable D cell battery you buy at the store for home electronics.

To simplify battery voltage data Toyota combines two modules (a book) as if they are one, so you have 14 total voltage readings. Because all these modules have to operate at almost the exact same voltage, the data you're looking at is showing you that out of the 14 books the voltage reading with the highest and lowest are about one volt apart, which might be enough to throw an error code.

Next step is to pull the battery and load test the voltage of the modules in the book with lowest voltage reading. While you're at it doing a load test on all 28 modules would be wise. To do a load test you hook a Prius headlight bulb up to a module for 2 minutes and measure how much the voltage drops. Not sure if it's different for a gen3, but for a Gen2 all 28 modules need to be withing 0.3 volts of each other or an error code will be thrown.

 

Your fine.

If concerned and the diy type, you could invest in the Prolong setup and begin maintaining your hv battery .

If not, you are near @Texas Hybrid Batteries , a good source for battery work.

Good luck and keep us posted .