Cell charge below 1V?!

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Please tell us more about this black rubber vent.

FYI : you're moderated until you've posted 5 times.

 

You're talking the Black plastic duct work to and from fan? Or venting tubes long as battery case plugged to a nipple on each cell? Usually leaks are from hatcha areas look at seams in unit construction it's glued like the Black stuff under spare tyre see how it breaks up and rattles. Similar type material fails on between sheet steel . Then water ingress past rubber deal etc.prius is like the Pacer. Fish bowls missing water.

 

that's what happens when old batteries sit. i don't think it is part of the roof leak, that is very common.

agree on not replacing cells. a new oem is pretty inexpensive these days, or look into 'newpriusbatteries.com'

 

The oxidation on the rubber tubes is common, though that looks pretty thick compared to others I've seen.

No sure about liquid in/on top of the modules/tubing, especially with the cover on.

How many miles are on the vehicle?

Maybe someone else will know : @TMR-JWAP @ericbecky @strawbrad @3prongpaul @Texas Hybrid Batteries

 

Don’t confuse what people will pay you for the car vs what it is worth. Used car offers are usually deeply discounted due to the fact that used car buyers are leery of what else is wrong with the car. If it’s just the battery, fix or replace it and move on. Market prices are irrelevant.

USD1900 for an OEM battery is not a bad price if you intend to keep the car. 150k is a baby.

If you want a new car, sell it and get a new one.

 

I've seen significant water pooled on top of battery modules a few times, along with water actually pouring out of the plastic ductwork when disconnected. Never had water in the rubber vents tho. Typically, due to rain leakage into the car along the inside of the trunk area side panels. I've pulled those panels off and had water dripping out of the insulation.

 

I suspect the orange plug at the battery computer for the voltage sensing wires is corroded. The corrosion provided the pathway to discharge all those cells. For more information check out this thread. The battery fires at ECU sense connector thread | PriusChat

 

concerned. either clean or replace

 

Interesting how that one cable connector and nut (on the safety disconnect cables) looks brand new. Happens like that sometimes.

 

Could be a dead cell.

 

Not a stupid question: be very careful handling that cable or connector; they are live. With the orange service plug in place, there can be well over 200 volts across that plug. Normally, you will have removed the orange service plug, but that still leaves over 100 volts across that plug. And those lines aren't fused, so you could make a good bang or fire if you inadvertently short it while handling it.

It's only really safe for handling after its 14 connections to the battery module terminals have been removed (using an insulated socket and your insulated gloves). And at that point, it is just as easy to replace it with a shiny new "wire, frame, #2" rather than trying to clean up the old one.

The condition of the orange socket in the ECU also matters. The ECU is safe to work on as long as the connections have been unplugged from it.

 

That's very common for #1 and #28 to run a bit lower than the rest. It's nothing to worry about. #22 is probably the module that will fail first some day.

Not if you just leave them alone. The current flows from the face of the module terminal to the back side of the bus bars. The tension of the nuts provides an air tight seal for those two surfaces. There will be much less corrosion there.

Install the battery as is and see if you got lucky.