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The New Repair For Toyota Prius Hybrid Batteries May Be Lithium-Ion

If we are being honest with ourselves Nickel Metal is now ancient technology. While durable, there are now better options and the answer is right under our nose.

Do you know how long nickel-metal hydride has been around? 1967. That is a very long time. Now nickel metal has been used in various capacities since then, but it ultimately found a home in our modern era.

Hybrid cars like the Toyota Prius have been using this tech since 1997 when Prius first came into our lives. Since then, there has been little in the way of advancement. In the last ten years, there has been more involved with learning about battery repair regarding reconditioning and module replacement. These processes are necessary but have only given us very few advancements.

Toyota Prius Hybrid BatteryA battery that goes through reconditioning does work, but the capacity loss does not allow for optimal fuel economy. Most people do not understand that with a battery that has aged, it simply cannot perform as a new battery does; it is not possible.

Now for some people, this does not matter, and to others, it does. After having 12 hybrids, I have learned a few things about nickel metal and the way it performs. I have learned how it ages and wears out over time. In short, I know the shelf life.

So what if I wanted to keep my Prius because I love it so much? Well, what I am about to share with you is a way you can.

Lithium-Ion Replacements Are In Test Phase
I cannot say who or what is going on, but I can give you some information. There is a company out there right now that has lithium-ion replacement modules in the test phase.

I know enough to be able to say that what this company is doing is real. I have seen the prototype, but I want to ensure they are protected and do not get overloaded with questions.

Toyota Prius Lithium Ion Battery Replacement in the works

What they have done is to do new lithium-ion modules to replace the old nickel metal. The process requires complete battery disassembly and installation of these new, power-packed modules.

After talking with this person, the batteries are going into the test phase to see how they will fare in a real-life driving scenario.

Lithium is a far more volatile technology, and because of that, safety is number one. Simply put, lithium is not something you can toss into an unknown situation. Testing must be done.

When Could We See Production?
Going forward into full-scale production, this is a grey area for a couple of reasons. First, as time goes on, older Prius models are going to go off the road slowly. Fewer cars, fewer products to produce, the need for it may not be viable.

Second, testing and refining the product to be mass-produced will take time, which plays into my first thought. If full testing and production for these new lithium batteries take longer than three years, I do not think large scale viability will be a thing. Small scale for enthusiasts, absolutely.

Conclusion
I have a secret I will not share here about the testing process, mainly for confidentiality reasons. However, I will say I have an excellent idea of what is going on.

I promise that as I can share more about what is happening, I will fill you all in with the updates and the story. I hope to see viability for a lithium replacement and keep our old cars on the road. I love my '08 and '09. I think they are some of the best vehicles built on the planet, that is my opinion, of course, but millions of Prius owners think so too.

Anyway, have a great day, and keep checking back with more updates to see what is happening.

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Peter Neilson is an automotive consultant specializing in electric cars and hybrid battery technologies. He holds a Bachelor of Science in Automotive Service Technology from Weber State University. Peter is also an Instructor of Automotive Technology at Columbia Basin College. Peter can be reached on Linkedin and you can tweet him at The_hybrid_guy on Twitter. Find his page on Facebook at Certified Auto Consulting. Read more of Peter's stories at Toyota news coverage on Torque News. Search Toyota Prius Torque News for more in depth Prius coverage from our reporters.

Comments

Jay (not verified)    October 24, 2020 - 3:03PM

This doesn't make sense from a business standpoint. As NiMH priuses age there will be a shrinking market. I'm sure the price of these batteries will be more than reconditioned ones, maybe even new NIMH batteries. The writer is also assuming older priuses will not have any other maintenance issues as they age. Plus how much more efficient will these new batteries be, 10%? I dont think this idea has been well thought out from a business perspective.

Andre Kohler (not verified)    October 25, 2020 - 1:43AM

I guess a comment from a 2006 Prius owner with an aftermarket Li-ION battery would be appropriate here, and I am such an owner. After my numerous complaints about the 3 NiMH battery replacements I got from my SoCal battery guys (happy to share their name and info, if anyone wants), about 3 months ago they decided to give me a Li-ION they designed, with a 5 year warranty! It seems that my Prius is a bit confused in the charging and discharging process at times, but my gas mileage (according to my Prius's internal calculations) has been up about 10% since the install, and it hasn't caught fire (yet?). I have done a lot of dirt roads and hauling with my Prius and it doesn't look so pretty anymore after 230K miles but it still runs very smoothly and it certainly seems that the new battery also gave it a new lease on its life! If anyone would like more info, I'm more than happy to share. And yes, I LOVE my Prius!!

Milton (not verified)    October 27, 2020 - 6:42AM

In reply to by Andre Kohler (not verified)

I own a '08 Prius with 207k on original battery. I was planning on the day when my battery dies and I replaced the vehicle. However, if I could find a decent battery that would improve the performance, I may consider. This is the best car I have owned in terms of reliability. Thank you in advance for the information.

ProDigit (not verified)    October 27, 2020 - 1:30AM

they better build in a firewall, an exhaust to the outside, in case of an explosion or fire, and a cabin air to battery cooling, as outside air in Florida is too hot (80+F the majority of the year, with temps as high as 100+F in summer, and weather is too cold in the winter in Canada.
Although for Canada it's easier to build in a cabin and battery heater attached to the battery charger circuit, to preheat them before leaving.

MeeLee (not verified)    October 27, 2020 - 1:38AM

if all a prius does is get charged via the engine and recover regen breaking, then what they really need is a super capacitor pack, rather than a battery.
This never goes bad, and can handle much more regen breaking force, and is lighter than even li ion.
It's just more expensive, and doesn't have a great range. But just use it to boost acceleration, and do the cruising on the ice engine.

Joseph (not verified)    October 28, 2020 - 6:07AM

What's the advantage?

Since hybrids have mostly shallow cycles, there shouldn't be much advantage in longevity, nor will the hybrid system be able to take advantage of the higher power discharge. NiMH is cheaper, more stable, and has better charging behavior in extreme cold. You write need to reprogram the hybrid system to get much advantage and frankly the lithium version of the Prius battle gets better milage than the NiMH so I doubt there will be fuel economy benefits even then.

Seems like a silly idea.

Bob (not verified)    May 6, 2023 - 11:57AM

I have a Gen 2 Prius with 161K. I have been using the Prolong battery reconditioner since about 120k with good results. I am interested in the new battery technology but concerned about the battery charging system not being configured correctly for the lithium ion. I am very interested if this can be solved and the new battery has a reasonable price. I love my Prius and I don't really want to spend another $30,000 on a new car. Please keep me in the loop., Bob.