Hello everyone, I recently purchased a 2022 Prius L Eco with about 53,000 miles on it. Please see the attached result in Dr Prius app's Battery Monitor result. Should I be concerned about what I’m seeing? Does it indicate that module #20 might be defective? The car still easily gets over 60 MPG in city driving, so performance seems fine. Would it be a good idea to have the Toyota dealership perform a battery check just to be safe? Thanks in advance for your advice and insights! Best, NC
So you can check battery stats from oodb or whatever it’s called? Friend says you can’t. What do you need for this? I’m wanting to check my battery too in my 2020 l eco I’ve had 3 plus months.
You can use Dr Prius app. Google "dr prius app" and you'll find the app's page. It has some good video and instruction to help you to set it up. I used an OBD2 scanner that supports bluetooth. Once the scanner is plugged in into OBD2 port, it can communicate with Dr Prius app. Then you can monitor the battery health using the app.
I believe that Dr Prius does support 4th Gen. The question that I raised is about the block (or module?) #20. It seems that that block/module's voltage always stays close to zero during the battery monitoring. Is that an indication of an issue?
Look at the voltage differential .01 that is excellent. 20 is just lower than the rest of the modules.
The vertical green bars for the cell voltages in the app are greatly exaggerated. The bottom of the bars is not zero volts. The voltage difference shown in the screenshot is showing 0.01 volts. This means that the highest voltage battery cell is only 0.01v higher than the lowest voltage battery cell. So this is very good. Note: The voltage difference between the battery cells will increase as the current usage increases. One parameter that is a little concerning is the DELTA SOC of 2.50%. This means the state of charge (SOC) of the battery cells are not balanced to each other. A completely balanced battery pack has a DELTA SOC of 0.00%. I am not familiar or have any experience with a Lithium-Ion battery in a Prius. I do not know off hand what the correct procedure is to balance the SOC of all the battery cells in a Lithium-Ion battery pack.
