The original batteries, non lithium batteries were 20-80% range. I am not totally sure with lithium or sodium batteries. I've read different things and it's not worth it for ME to bother with it. As long as it works, that's all that matters to me. The computers seem to know what to do and Toyota has decided on a certain percentage and that works for me. Some people are really into finding out all about that stuff, and that's fine for them.
I work and got money from Li battery research but I am still not convinced with EV disposable cars. Li ion battery varies a lot depends who made it, eventhough they use the same technology. Generally, Li ion battery is happy with 40 to 60% charged state. The art is to design the anode so it will not crack at high charged and the cathode still have enough crystallinity when the battery is depleted.
You're still using that terminology. Do you have any examples of 'EV disposable cars'? Who and why would someone dispose of an EV? I assume you're going on about the battery degradation, that will slowly show up in an EV. If your Gasser had a known problem of the Gas Tank Shrinking,,, WHEN would you spend thousands to replace it? With EV's some charts seem to show that when Degradation is at 80% it's time to replace the pack. I don't understand that. My EV would be fine with an "80% gas tank". In fact I routinely use 'hilltop reserve' which is ~87% SOC. My Prius would be fine with an 80% gas tank. My Prius and my Bolt both have ~150k miles on them. For example.... Which car will have a major failure first? (I consider a head gasket failure 'Major'.) Yes, yes, you've dabbled in Li-Ion batteries at a job. Was it high-power packs with a proper TMS? Or was it flashlights, tools or toys? Laptops have been using them since before AC Propulsion got the idea to build big packs and use them in a car.(Ta'HayL with Leon) (Yay, the 18650 !) What's wrong with laptops, tablets and phones? They get replacement packs, when the time comes. No one disposes of them because of degradation. Well maybe the Rich do....
I would like to think that Toyota is still operating under the notion that excellent reliability creates strong brand loyalty. If my Prius overcharged my lithium cells to 4.4V like my Samsung phone, the batteries would perform better, but in less than 2 years they would be destroyed (as my phone battery did). I believe my Prius battery maxes out at 70% charge, which is about 3 volts. A hefty battery replacement bill after 2 years would destroy my loyalty to Toyota forever, I should think.
Let’s not forget this is for 200k plus posts… Currently at 205k 1) Did you replace the HV battery pack? Do you maintain it? Original battery, cleaned fan, replaced bus bars and nuts around 150k, installed air intake filter 2) Did you replace the 12v battery? Once around 130k 3) Did you replace the transaxle fluid? How often? Once at 140k 4) Did you replace the brake pads? 120k front and rear but the dealer lied to me about needing the service 5) Your lifetime MPG (if available)? 45mpg 6) How often do you change your oil? Does your Prius consume oil? What brand / product did you use? 10k until 120k then every 5k after that. Oem filter and Mobil 1 or any quality 0w20 Consumes .5-1 quart per 5k. 7) How about posting a picture of 200,000 miles on ODO? 8) Did you install an oil catch can? How often do you inspect or dump it? Yes when I did the egr service, cleaned out every 5k at oil change 9) Have you cleaned the egr circuit? How frequently? Complete clean out 140k, new oem egr valve and intake manifold. Probably need to do it again here soon. 10) Any other maintenance? Spark plugs 120k, ice water pump 155k, on my 3rd set of tires, general maintenance like cabin and engine filters. Inverter coolant, pcv valve changed 140k, MAF and throttle body cleaning 140k. Added silicone on the weld cracks to prevent water from getting into the spare tire area. 1 bottle of Gumout regane every 5-10k.
Theres a good point though. Battery cycle life increases more and more if you stay closer in your cycles to 50%.Cycling 49-51% the battery could probably last for 30 years+. Now would that be advantageous in a car that regularly ends up in the junkyard every 20 years? Probably not. The prius per obd2 flicks the engine on at 25% and 75% to avoid over and under charging. Normal driving the battery hovers around 50-65%.
2014 II, 278K miles as of this post and well on my way to 300Kmi 1) Did you replace the HV battery pack? Do you maintain it? Original is still @62% life. Just keeping the fan clean... probably should look at a rebalance soon. 2) Did you replace the 12v battery? Dec 2024 replaced the original 11yr old factory w/Optima Yellow top 3) Did you replace the transaxle fluid? How often? Yes... at 100K and 200K. 4) Did you replace the brake pads? First time rotor and pads replaced at 275K 5) Your lifetime MPG (if available)? ~49.9 overall. 80% Hwy / 20% city. Varies seasonally. Still pretty close to 50mpg per tank. 6) How often do you change your oil? Does your Prius consume oil? What brand / product did you use? Every 6,500miles, Mobile 1 Synth, and it doesn't consume at all. Very clean at the swaps. 7) How about posting a picture of 200,000 miles on ODO? (I'l edit and add when able) 8) Did you install an oil catch can? How often do you inspect or dump it? Nope, but I probably should. The intake manifold was filled with oil at 275K replacement. 9) Have you cleaned the egr circuit? How frequently? Yes, DIY at 275K miles. I pushed my luck and will now clean and swap coolers every 60K 10) Any other maintenance? Coolant flushes, spark plugs, and other maintenance on schedule per Toyota. Cleaned injectors and replaced coils at 275k. Cleaned MAP/MAF sensors. Replaced intake manifold and cleaned throttle body at 275K. All DIY stuff... pretty easy if you watch the videos. **Still need to swap water pump.
