I'm pretty sure it almost died on us today

Natalie,
I can easily supply you with modules that are guaranteed to be good. I even guarantee them for 12 months. The real question you have to ask yourself, and be honest with yourself, is: Are you confident in your ability to rebuild a hybrid battery? I've seen many batteries "rebuilt" by inexperienced DIYers that were some of the scariest things I've ever seen. I have no idea how or why they worked or why they didn't catch on fire.

rebuilding an HV battery isn't super complicated, but it's also not just swapping batteries in a flashlight.

 

Not sure what you're hearing, but you never want to climb a step hill to the point of draining the battery to 1-2 bars, best to pull over and force charge the HV battery before continuing up a long hill. Would force charging be a good idea for your failing pack, unsure and it may depend on the HV battery pack condition.

I've heard that pushing/forcing/commanding a vehicle (curious if this only applies to the gen2 platform) to climb a long hill when the HV battery SOC is low can potentially cause transmission issues or complete failure, and maybe this is the sound you were experiencing.

If I had to choose between pulling over to force charge a known failing battery so I could continue my journey up a long hill, or continue to push forward on the gas pedal and potentially blow up a transmission.. I would, and have pulled over to force charge for a few bars, but my battery may have been in a better state of health.

Since my reply also mentions transmission health, when was the Toyota WS fluid in the transmission last replaced?

 

Not kidding, "force charging" is a real thing, use the search feature and learn all about it. Is it safe to force charge a failing battery, unknown.

 

But do you have a website or something?

I do not have a website for this hobby of mine. I'm busy enough with my real job and other side gigs that I wouldn't be able to deal with the volume which would probably come my way. For the most part, I prefer to pick and choose when to make myself and my batteries available. I'm happy to help forum members whenever needed.

Has anyone else on here got them from you?

Hmmm....I've built, travelled and installed HV batteries for about 2 dozen other forum members I guess. I limit my installations to an area that's essentially within 4 hours drive time of Columbia, SC. That would include Raleigh, NC / Knoxville, TN / Jacksonville, FL / Atlanta, GA and anywhere between. As for individual modules? I've shipped them all over the country.

It's not my real job, it's more of a hobby/side gig for me. Gen 2 batteries are my specialty. I build them using module sets from very late model wrecks (typically 2016 and newer) and use only new cables and wiring harnesses purchased from Toyota. Obviously, that means I replace the entire set of 28 older modules, whether they're good or bad. It gives me quite an inventory of used modules. They all get thoroughly tested and made available for those who choose to DIY their own batteries, and sometimes I use them to build batteries for my own cars for experimenting. (I currently have 5 Gen 2 Prii in my driveway.) I have never provided less than a one year warranty on individual modules and have never had a single one returned. I currently have about 1500 modules in inventory, so I'm able to provide pretty good matches.