2005 G2 230K Miles, Block #6 Discharge issue

i'm no expert, but it sounds like you need some balancing. have you considered pro long?

 

If it's the original battery then you have a weak module in block #6, it has diminished capacity. Can you post more information from Dr Hybrid, like actual voltages under load/charge?

 

I think you can get some valuable info as hybrid battery exchange suggests above. Knowing your block voltages under load wil be very enlightening

 

The app shows block voltages, the rest is up to you. With the car in Ready mode, put the gear selector in neutral, a/c on, watch the voltages as they fall. Let the battery discharge down to 14.5v per block, keeping an eye on #6. If it all of a sudden it falls by a 1.1-1.3 volts immediately stop the test, you have a bad cell within a module. Put the car back in P and let it recharge the hybrid battery.

Reconditioning is something that will make a healthy battery perform better, it will not fix a failing cell. On my bench reconditioning a battery with a weak cell just makes the failure show up at higher pack voltage.

 

Dr Prius and Hybrid Assistant monitor all 14 block voltages and plot/log them and compare the differences between them. This difference between blocks at various states of charge as well as overall pack capacity is the determining factor of how healthy a battery is, not the opinion of a mechanic who fails to understand how to properly asses a battery.

The only part in question with Dr Prius is what is their tolerance in specifying "poor balance block", this is why we are asking for real numbers.

 

If the pack is under warranty, your best bet might be to wait for failure

Check the dorman warranty to make sure opening the pack doesn’t void it

 

It’s usually the only indicator that will trigger warranty. You get the code, but should still be able to drive it

 

@biglew8 has a thread here where a lot of folks have described their experience with Prolong, including me.

He’s also a Seattle local.

 

Good luck on the pack. I wish you many miles on the Dorman. If you don't junk the car when it fails, you may want to look into new cells for replacement versus buying someone else's old used cells...