[Spicy_Finger]

So I bought CT200h used last year, and recently my MPG has gone to shiz. (Like 28~30)

It usually pull 35~42 MPG, and I realized that EV mode doesn't engage (or engine kicks in over 5 mph even with the slightest press on pedal)

After a brief investigation, I'm assuming it's Hybrid Battery problem.

So I'm thinking to replace the battery pack. Then learned about Lithium-ion Battery.

One of their sale pitch was the battery pack upgrade increases the car's MPG by about 10~11MPG.

So this is my question.

Is it really 10~11MPG? or is it just a marketing exaggeration?

I would appreciate if anyone could give a real life review on these.

 

[Spicy_Finger]

Got it replaced, about a 5-hour job, shocked at the amount of corrosion. I broke off a terminal on the new blades, had to remove the post screw and replace with a thinner one to make it work. DO NOT OVER TIGHTEN THESE. Once installed it rebooted and everything was fine. No ECU weirdness. Drove it to work the next day then to the car wash, no problems. Checked the dr prius app and all cells are charging and within .08 voltage difference. I did notice the battery didn't drop at night and the ICE seemed to run a lot less. My battery health was at 49% before and I couldn't run it in Eco mode, or it was not any benefit to, now I can run it in Eco mode and it seems like normal mode and the mpg jumps up. Will test for a week and report back.




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AHHHHHH Thank you for actual answer man! This is what I was looking for!

Again, Thank you!