2010 HV Battery - never full?

The maximum state of charge cannot reach 100% during normal operation - Toyota does not want the HV battery fully charged to maximize its life. Full green SOC in a Gen 2 is approximately 75% - never was 100%

 

That's a good problem to have The more and quicker the battery fills up, the lower capacity the battery has. When ever I drive a Prius I'm hoping to never see a full battery. Old high mileage Prii will charge right up to full after a couple of stops. That's a bad

 

Yes the Prius is good at taking care of itself. I do try to not cycle the battery as much as I can. I try to prevent sitting for more than a few minutes with the AC going as that will deplete the battery pretty quick. Putting more cycling on the battery, And most importantly use a lot more gas in the next few minutes of actual driving to change the battery back up to six or seven bars

 

it should operate similarly to your gen 2. my 2012 fills up with light green bars occasionally. if you're sure it hasn't happened and will not happen, something is wrong.
don't be confused by 'full bars' and 100%, they are two different things.

 

The 100% he referred is far beyond the 8 bars of a full display. He is conflating your question about the display with the actual battery rating. Those are separate things. The display just shows the normal working range of the battery, which is a narrower window than the full battery rating.

For flatland or low-elevation-change driving, it is perfectly reasonable to never see more the 6 or 7 bars. The full 8 bars normally appears only after a significant amount of regenerative braking from substantial downhill grades.

 

i have seen 8 full after a few miles of flat 55mph.

 

It is also possible to get the full 8 bars during the winter when temps drop well below freezing. I have seen 8 full bars more than once when stopped at a stop light with the ICE running to maintain engine temperature after the SOC has reached 7 bars after decelerating off of the highway on my way to work. Nevertheless, eight bars is rare - I've only seen it then. No substantial hills in District 6.

 

Watch it when going down a long steep hill. Don't shift to B, and use brakes normally. By the end of a long descent, say 1/2 mile, it should get to full bars displayed.

 

Pearl S has never displayed "full charge" on the battery charge indicator. Also, on Gen III it's always black and white. Pearl (GII) occasionally would go to "full charge" on the battery charge indicator (and green), and would always do so when descending a mountain pass.
Sounds like normal operation to me.

 

were they black and white?

 

Just occurred to me OP's taking pics at 72 mph. ​

 

I got it 100% full when going down hill with out the b mode basically your riding down a long Hill with you foot on the brake long enough, it will be full.. it's a safety features I believe to keep the battery to become overhead.

Posted via the PriusChat mobile app.

 

Click on the image, but yes they are still black and white. Well, shades of gray.

 

I always saw very light green.

 

i see light green as well.