Hybrid Battery Question

You can do anything ya like . As far as battery games go . A battery is a battery . Refurb battery is a band aid at best .

 

I don't have skin in the game, but how many hours does it take to swap out batteries?

 

The voltage difference between modules during your session never exceeds .1 Volts, which is an indication that they are not out of balance. There may be some other issue with the hybrid system. The P0A80 code is a non specific indicator of a hybrid system problem. There should be other codes that are better at pinpointing the problem. Possibly your scanner is not seeing them. What device are you using to scan the codes? I think you need to identify the problem more fully before spending money on replacement parts.

 

1.2 hrs never done before no short cuts .

 

Is that with the packs already assembled? Or swapping the modules too?

 

The Delta SOC is showing 42.50%, which is not good. The Delta SOC should be 0.00% on a healthy battery. This indicates that the battery blocks are out of balance with each other. Can you provide some background on this 2013 Prius and hybrid battery?

1. Is the hybrid battery the original OEM for the car, or has it been worked on previously.

2. Has the car been driven regularly, or did the car sit idle for a while (like for months)?

You need to use a grid charger to top balance the complete hybrid battery. I would be very surprised if any of the hybrid battery modules have gone bad if it is the original 2013 OEM battery.

 

I always tell people the only data point you need to pay attnetion to for battery lifespan is "Voltage Difference." All the other data points and tests don't tell you as much as watching that number during high amp loads from hard acceleration and hard braking. As the pack gets older those numbers will go higher, which indicates some cells are starting to go bad.

 

Those SOC numbers can be wildly inaccurate due to lots of different factors. There's way better ways to track your battery health over time!

 

I am not talking about the state of charge (SOC) of the hybrid battery. My post was about Delta SOC, which concerns the state of charge of the battery blocks to each other. Ask Jack what a high Delta SOC means and how to fix it.

Check what the Delta SOC is on your car and report back.

 

I believe he's talking just swapping out the two cases or swapping pack . Trim removal etc air ducts . No shortcuts

 

Maybe put on your glasses? OP shared a Dr. Prius video with a SOC of 62% that drops down to 61%... Not only do I have no idea where you got your 42% number from, but I insist that the SOC calculation that Toyota does is less reliable data than watching voltage difference in real time under high amp loads of braking and accelerating.

 

If that's true then my record doing that is 45 minutes... What's yours?

This guy does it in less than 13 minutes:

 

Put on your glasses! The Delta SOC is just below the SOC in the app. The red 42.50% is the Delta SOC..

 

I see the 42.5% Delta SOC in the screen shot (the fact that it is in color red would seem significant). If that really measures the difference in SOC of the highest vs. lowest charged modules, that would seem problematic. But how is the Voltage Difference so low then? I watched the entire video and only once did it touch .1V. During both charging and discharging, it was generally well below that level. A 42.5% difference in SOC between modules doesn't make sense unless the voltage of all the modules is 1V or less.

 

Oh yeah... That one... I've been using Dr. Prius app for 8 years and all those numbers give so much conflicting information under different driving conditions that I only pay attention to voltage difference in real time under high amp loads.

 

Yes, voltage difference is important, but Delta SOC is also important. Ask Jack about what the Delta SOC means. You learn something new every day.

 

I know what it means and have been helping people on here understand what it means enough to know it's not as reliable of a measure of battery health as paying attention to voltage difference during high amp loads.

 

It does seem strange that the Delta SOC doesn't move from 42.5% during the entire session. I would definitely question that.

 

Exactly!