38 mpg to 48 alone is a HUGE increase. Who wouldn't want 10 mpg better? Over a short amount of time that's an incredible savings.

I have a 2010 prius. The car has 471,000 miles, and I consistently get 55 mpg. The best I got was 72 mpg on a long trip (I have pictures to document the achievement). The car had been driven 450+ miles on the trip meter to show that was an accurate reading. I have replaced the hybrid battery 3 times. The last two times were through green bean battery because they offered lifetime warranty. It's all on how we drive the car. I'm sticking with Green Bean battery because they come out to my house to replace it, and it has lifetime warranty for about $1,700.

Exceptional value. These Prius are a favourite for the taxi industry. They last 300k to 500k miles the CVT is the most reliable in the world. This CVT is in all Toyota hybrid including Lexus. From memory I think the water pump for the radiator cooling is about the only thing that will need changing eventually. Bugger all goes wrong with the vehicle. However it’s just basic transportation. The Camry is a big improvement. Same deal extremely long life vehicle.

Great! Thanks for taking you're time for such an informative video. I think a yearly update would be cool, so we have a time perspective as this lithium battery use for a Prius is something new.

You've reduced your weight by maybe 75 pounds, which you might notice. As you mentioned, the bad thing is that the LiFePO4 cells REQUIRE a low-temp cutoff for charging (at about 0 C or 32 F), and if there isn't one in those packs the battery will be destroyed in sub-freezing temperatures.

When I first bought my 2007 Prius, I was told that the battery would last 8 years. Surpisingly, we had it for 14 years. I passed it down to my kids as their first cars. At that point, I didn't want to spend any more money trying to revive it. We had done some expensive HVAC repair, so I wasn't going to splurge more for a new battery. I am not mechanically inclineds, so it would probably cost an arm and a leg to get someone else to do it for me. It was a great car for the time that I owned it. RIP Prius!

That car looks familiar!! Great video man!

Thanks for producing this video my interest in the Prius model has been skeptical but after watching this video I think I will find me a cheap Prius and get this battery package to save on gas

Heads up the battery are blowing up...just seen on Facebook

You see that pink one with the Lithium swap that caught fire? Definitely some hobby level stuff going on so be careful and carry a fire extinguisher! Maybe consider doing manual balancing or whatever preventative maintenance might end up being needed!

Just ordered the v2.5! You are buying into the reliability of Lithium as well!

Thank you for the updates . This battery is always sold out

good job. ) But my experience with nexcell. is bad I bought it 1.5 year ago as a version 1. In 8 months my car stopped performing. I was told i need to update to version 2. in another 7 months it stopped working again. now I was told version 2 was a hiccup and it is not working and go back to version 1. what a joke after spending 3k grand. it appears the battery workmanship quality is bad, technology is not proven. zero warranty. hope for the best with your car

biggest problem I see is....the management software of your 2012 Prius was made to NiCd batteries and is completely different from Lithium batteries required specific software. Only the 2015 Prius and up have the management software for lithium batteries. So, in the long run, your batteries will fail early by lacking the correct software to charge and discharge limits and balancing the cells

This would be a great upgrade. Unfortunately you can't get any. They are always sold out. Upgrades are no good if you can;t get them. 🤔😞😠

I wonder if you could install a 120V battery charger so that you could top up the battery overnight like a plugin hybrid, that way the engine wouldn't need to cycle as much for the first little bit of driving. I drive a little Hyundai PHEV doing delivery and regularly use either no gas or hover around 1-4L/100km (which is about 55 - 235 US MPG, excluding electricity use) depending on conditions. As an example, yesterday thanks to nice weather and some charging opportunities I drove about 42 miles and my engine didn't turn on all day. The electricity works out to cost8ng only about 3-4 cents per mile in my area, which is nice.

38mpg to 48mpg is 10 mpg, which is a 26.31% improvement!

Gracias así vamos aprendiendo

I had been keeping a spreadsheet on my 2005 Prius from Aug 2022 thru Apr 2024 (until a Hit-and-Run DUI destroyed my car). One thing I noticed, and later coded for, was the mpg vs month, since here in Phoenix summers are VERY hot (Last July is was 115°F every single day!). I also kept separate columns for MPG(Prius) and MPG(calculated). Typically these were +/- 2% but occasionally as much as 5% which I attribute to different pumps clicking off when the tank might not be completely topped-off. The majority of fill up were at 2-bars (around 8-gallons). But we know the Prius gas gauge is notoriously inaccurate. One thing I noticed (and wished I'd kept better track of) is that during moderate winter months (when I use the heater) the Hybrid Battery would often charge to 7-bars. But during summer months (with heavy air conditioner use) the battery would commonly only be 3 or 4 bars (and often 1 or 2!). I think the Hybrid Battery management system takes into account the battery temperature and wants to keep the State-Of-Charge low when it's really hot. If you think about it, MPG is Miles per GALLON of *gasoline* which is mostly a constant from the ICE. i.e. long term, all the miles you drive are from *gasoline*. The efficiency come for recovering energy using regenerative braking and now wasting it using friction braking. So changing batteries or battery technology shouldn't make much difference, except.... In this case we are comparing a defective NiMH battery at end of life and with reduced capacity, compared to fresh LiFePO with full capacity. So the old battery likely has reduced regenerative braking (less storage) and is reverting to using more friction braking more often (thus reducing MPG). Similarly, the old battery has less energy stored (from previous charging or regenerative braking) so more of it's acceleration is from the ICE at a lower mpg efficiency.

Where did u buy de nexcell cells?

2000$ for a 1.5kwh battery. im crying man, wholesale lifepo4 a 1.5kwh battery costs around 100$. well when you dont work on cars you gotta do what you gotta do. still better than buying something new and depreciating. currently building a 3.5kwh lifepo4 12v battery for my car, costs 328$ on the slow boat from china

How many kwh is the battery?

My 2005 was getting 29mpg. I put the LiFePO4 nexcels in mine and now reliably get around 42mpg. That’s a HUGE improvement! And Jack’s customer service is outstanding. I’m not sure why you don’t feel the improvements you’ve seen are not great. Over time I think you’ll be very glad you made the choice you did. I know I am. So congratulations to you.

hypermiling means you're going 30MPH on the highway.

I own a 2019 all wheel drive prius living in Boston. The technology for those engines 🎉 are much more advanced. I use to get about 65 to 70 mpg. But I e been owning hybrids for many years. Before the 2019 I had a 2017, and a 2015 before. the 2017 used lithium. I got about the same with the 2017 too. My wife drives the 2019 presently, but she gets about 35mpg. Since she only do very short trips. She does less than 5k miles per year. I'm driving a ModelY presently and it seem to be more efficient than the priest. Well electric energy is much cheaper than gas.

Thanks for the video! Didn't you say that in the beginning you were getting 38mpg? now 48-50mpg?! I'm confused when you say that you "didn't get a crazy 10% increase....". What am I missing?

With a large lithium battery inside the cabin of your older Prius I would have a quick escape plan including a window break tool and gloves to get out quick if the battery goes off on you. Lithium batteries vent some really nasty toxic gases when they fail. LiFePO4 specifically vents 5x hydrogen compared to their physical size. That can go boom if the right air gas mix is reached inside the cabin.

Where did you getthe upgrade done?

How much did the Toyota stealership what to replace the battery?

Get a new Prius has 196 BHP and AWD, for me I wish it had a bigger gas tanks, as I like to go on very long road trips

Realistically, the only time that you actually see an increase in fuel economy when replacing your hybrid battery with something that is meant to be an oem replacement, including this lithium upgrade is if your battery was fairly low in its capacity compared to original That's going to be the only thing that's going to make a difference and really get you better. Fuel economy is if one of your primary issues with your battery was it just didn't really have any capacity and now you have a lot more capacity for storing energy The most common reason that the Prius batteries fail is cuz corrosion on the terminals and or modules in the battery become out of balance and then it throws the code and then you need to refurbish the battery or get a refurbished battery. I'm talking from experience myself. I have a 2012 Toyota Prius V package 2. It's factory hybrid battery failed at 400,000, mi and 11 years old I replaced the battery and saw no real change in fuel economy it stayed the same and did not improve and the reason my battery lasted so long is cuz it is not a coastal car. Never was. It was sold brand new in Kansas and then I bought it and I'm the first person to title it in the state of Colorado. It's only ever been registered in two different states and hasn't seen much driving activity where it was in a humid environment which is why it's battery lasted 11 years and 400,000 mi I called green bean battery solutions and with the lifetime warranty and replacing the 12-volt battery as well. It was $2,250 for me to get a refurbished battery that was still a nickel battery and the company itself the name that he could not remember where he only got the first part of it is green bean battery solutions I am about to turn over 442,000, mi on the odometer right now if anyone is curious.

The guys making the Nexcell Lithium battery are not telling you the whole truth. These cells build quality is questionable, can it really handle the high amperage current it claims when you look at them. For sure they did a good job of replacing the chemistry of the NiMH with LiFePo4 and adding cell balancing, but there is more to that, what they don't mention anywhere is the software of the Toyota Hybrid system is not touched. The car has no notion it has a bigger battery in terms of capacity (Ah) and there is no way that it will make better mileage for what it what it was calibrated for! Its good as a battery replacement, but too many customers are complaining about the Nexcell cells failing. Wished the product was better well designed or else there would not have been so many revisions, they should have done it right the first time . . . They are taking 2 Toyota modules of NiMH {known as a blade in Toyota jargon} and replacing it by one Nexcell module, from 12S to 5S, they should be given some credit for that.

Wait, i get 47.2mpg with a gen 2 prius, stock battery and winter tires in autumn weather. During the summer i get anywhere from 50 to 70 mpg. Not really worth the money if you ask me.

what shop where? thanks for the video

Don’t break ur head just check voltage minimum block number a maximum block number compare the voltages of more than 1.2 volts the Ecm will log a P0A80 if it exceeds 1.2 volts u don’t need Prius app u can check it with 4 system scan tool

Its entirely your environment that effects your mpg. I have the original battery and get 55+ mpg on average.

Lithium polymers are not the same as lithium ions. They are super forgiving and as long as they have the correct charge ratings they will out live the car. The stock batteries have no balancing and you don't necessarily need it for these. If someone was that worried about it they would have been balancing the stock batteries.

Hello. Where can I buy this?

Lead acid, nicad and all that garbage still being on sale is just baffling to me

lithium ion is highly combustible

All the mpg savings in a hybrid are wasted amd oaid in doubble at the end of the day...!! Hybrid vs non hybrid

Don't park that car in your garage. You didn't do enough research.