Hybrid Battery Terminal Bolts

You mean nuts right?

I read here someone dropped them in vinegar and they promptly turned black. Not sure of the ramifications of that, but maybe don't do that.

To get a physically identical nut, take one of the remaining nuts along to a hardware store, test fit it on their metric bolts, then find a nut for sale that fits that bolt, and similar style. I think they maybe have integrated washer?

I'd guess it's M4 coarse thread.

Torque is roughly 48 inch pounds 4 foot pounds) IIRC.

 

The nuts for the busbars are just normal M5 (x 1.5 pitch I believe).

If you lost one screw from the bottom, which is what clamps the module to the baseplate, I wouldn't get too worried about it. The modules interlock with each other. The module on each side of it will keep it well in place.

Be extremely careful cleaning the busbars . many people damage the fine voltage sensing wires/tabs when they try to remove the copper bars. Life is much easier if you just purchase a new 'wire frame #2' from Toyota. It's the entire voltage sensing harness with busbars and wires. Just need to reuse your heavy orange cables, unless you buy new ones of those also. I put all new harness/cables/disconnect in my batteries when I build them.

 

Not sure if they are nickel plated nuts. You could check with Toyota and see if they can get one for you.
Maybe a spare one just in case.
You can use baking soda and water, I make a paste and us a tooth brush. That's a safe way of doing it.
They use a wire brush or fine sandpaper to clean them up.

 

It might be part no G9291-47077 on this page. You could check with local dealership:

Buy genuine battery & battery cable for Toyota Prius 3 generation 01.2009 - 11.2011 from Japan - Amayama

 

If it's just one nut, just go to the hardware store and replace with matching size. Nothing special about them... But ideally, to be thorough, I replace bus bars, voltage sensor terminal and nuts all at the same time. If you want to do that I can share links with you?

 

Lol... Toyota would you sell you one nut? I can see the confused look on the parts guys face when he looks it up and it says you have to buy the whole pack replacement for $1700... Too funny... Most efficient way to clean bus bars is a rock tumbler...

 

In the past, I've purchased just one nut or bolt from Toyota, and ford, and Chrysler.
I was actually surprised, I just took a chance.
Since I've never worked on the battery, I don't know if they are special nuts or just regular nuts.
My impression was they were brass or copper. And/or they had a coating because the terminals are
a different metal.

 

Here ya go! They will sell you just ONE!

Genuine Toyota G9291-47011 (G929147011) - Amayama

 

These guys will, $1.59 (CDN) apiece for me. No extra shipping charge since I've got a couple of air filters in the cart already.

Genuine Toyota G9291-47011 (G929147011) - Amayama

 

Of course they have power.... each cell has power, they are linked in series.
You should quit while you are behind, and before you cause serious damage to the battery, and YOU!

 

Toyota Parts like G9291-47011


$0.70 CAD

Took a month to arrive but I got them. They are non-standard size compared to same found at McMaster-Carr. The Toyota version has a wider base.


iPad ?

 

McMaster Carr won't ship to individuals in Canada. THE place to window shop tho.

 

Nothing wrong with cleaning them. You just have to be careful.
Maybe a plastic straw over the studs next to the one you are cleaning?
Just go slow, and carefully

 

I think worst shock you could incur is if you put your hands one at each end terminal. Deal with one connection at a time, and think: don't provide a short circuit.

Whenever possible, keep one hand in your pocket.