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Play It Safe, Upgrade Your Toyota Prius Hybrid Battery With Proven Technology

Ever thought of doing a DIY lithium install on your Toyota Prius? Before you do that remember how dangerous it can be and consider there are better options out there. Here are the details.

I cannot tell you how many YouTube videos I have seen where people DIY or hack together lithium packs for their Toyota hybrids.

I came across something recently that just nearly caused me to have a heart attack. The picture below shows what an untrained but curious Prius owner is trying to accomplish with installing lithium into their car. I want to cover why most people should not attempt this kind of an install and what you can rely on.

Why You Should Not Put Just Any Lithium Battery In Your Prius
Installing any lithium without researching what type it is can be deadly. Lithium-ion, if short, will get thermal runaway and cause massive fires. It will destroy just about everything in its path until all the energy has escaped.

Hack work lithium pack fire hazard

Lithium has many forms, and not all of them are the same. Lithium-ion and Lithium Polymer are two of the worst culprits for thermal management. They are most likely to catch fire unless there are sufficient safety measures in place.

Putting together a lithium-Ion or Polymer pack in that manner is a deadly combination, and I highly recommend not doing that.

What Can Be Done To Upgrade Your Prius With Lithium
Currently, there is only one solution to upgrading your Prius battery safely from NiMH to lithium. NexPower Energy has put together a 7-year battle-tested kit that offers Toyota hybrid owners an opportunity to fall in love with their hybrid all over again.

Project Lithium has injection-molded direct replacement modules that take the place of 2 regular NiMH modules. They are lighter, more energy-dense, and directly fit with no worries about crazy wiring or potential fire issues.

Lithium pack from NexPower Energy They use a safe and well-tested LiFePo4 (lithium iron phosphate) that is safe and affordable for consumers. It does not "off-gas" like NiMH does and runs cooler. It is 97% efficient compared to NiMH, so all that heat is used for the car instead of going to waste.

The hard work of "doing it yourself" is completed. The packs are available for Camry and Prius, with more packs coming on the horizon. If you think this is some sort of "fairy dust" or that the packages do not provide more bang for your buck, think again.

In 7 years, with over 500,000 miles of testing, the pack has given beta testers an eye-opening experience of how good they are. I have personally installed several of these packs, and each owner has happily reported back the same results.

Better acceleration, better fuel economy, and a price that did not break the bank. If you are curious about these batteries, you can read more on them here.

Thank you all for reading, and if you want to save your hybrid, there are better roads. Time is money, and trying and reinvent the wheel may not be your best option.

Remember, Today's Adventure is Tomorrow's Story.

Toyota is forging ahead with pushing advanced technology.

Check out this wild new battery tech that Tesla has and why it will forever change the auto industry.

Also, watch Toyota suddenly bringing its BZ4X electric SUV concept to United States on Torque News Youtube channel and please subscribe us on Youtube and follow on Twitter for daily Toyota and EV news reports.

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 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 reporter.


rjparker (not verified)    August 23, 2021 - 8:28PM

"Currently, there is only one solution to upgrading your Prius battery safely from NiMH to lithium. NexPower Energy..." So are you saying this battery system is the only lithium option or is it the only "safe" option compared to those from They don't clearly list their battery chemistry so its not clear if the Project Lithium is addressing newpriusbatteries or are somehow unaware of the competitor.

Peter Neilson    November 10, 2021 - 8:10PM

In reply to by rjparker (not verified)

New Prius Batteries use inferior cylindrical cells from China. They are nothing revolutionary like the Lithium packs. Project lithium has been in testing now for 8 years with over 500,000 miles of unrelenting success. I was lucky enough to be a Beta tester and my battery is still doing amazing after 2 years of use (abuse).

Bernal Jimenez (not verified)    November 10, 2021 - 9:03AM

Why is there no reviews about the nexpower battery?
l just found the newpriusbatteries web site, torquenews and this one. And the last two are from the same consultant.
I am interested, but I need good reviews.

Conni Spancake (not verified)    April 19, 2022 - 7:28PM

I am getting ready to take my Prius 2015 in for the 100K checkup and have tried to do some preparation regarding what I can do on my own like change AC cabin filter.
Can I do fuel system cleaning? and what product should I buy to put in fuel tank?

I think I can clean my A/C? and what's the best product to use?
Looks like the coolant system needs to be done at 100K according to maintenance manuel.
That's enough for a start. I'll wait to hear back from you. Thanks. Conni

Ed Mihok (not verified)    April 22, 2022 - 11:05PM

Great news and perfect timing, my 06 Prius hybrid batteries just quit.
Lately the mileage has been 33-34 mpg avg.
Triangle of death has been on for 3 days along with the vsc, engine light, ! Light.
Today, 15 miles from home the battery cooling fan started running, six miles from home it dropped 90% of power, creeped home at 3-5 mph.
One bar of battery life left, hatchback floor span was really warm.
Still starts and crawls.
Now where do you get these lithium batteries?

Michael K Handy (not verified)    June 15, 2023 - 3:53PM

My 2011 prius will either need a NIMH rebalancing kit, replacment of at least two modules, or a lithium upgrade that is currently not available. I've seen comments about the cylindrical NIMH upgrade from China and will wait for lithium NEXCELL upgrades to become back in stock, but that means I'm going to have to rebalance my battery(about 700 and three days). So far I've been able to stop the P080 code and keep my Prius running, but can see that at least two modules are needing to be replaced. Do you have any suggestions about the timeframe on availability of the Nexcell upgrade for my gen3? Thanks!!!