There is an analog meter in the 21 and 22 models that can be interpreted as percent, but it is not labeled. In the 23, there is a bar graph that can be displayed that also can be interpreted as percent. There is no numeric percentage value that is displayed to my knowledge. The best thing to refer to is the EV miles remaining.
Battery Percentage on Display
I've searched here but couldn't find this asked before. I can see my car's current battery percentage in the app. Is there a way to get that percentage to display on the dash?
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That's disappointing. Thank you.
If you need to know percent charge, it is exposed as a PID via the OBD port, which you could pick up with an OBD reader, though what's provided there is true 0%-100%, not the 20%-80% charge (or whatever the truncated range is) that the gauge cluster shows as zero charge to full charge. I dunno what you do with that information other than for curiosity's sake, but it is an available PID.
Interesting. So at 0 miles left, it will show 10%, right?If you need to know percent charge, it is exposed as a PID via the OBD port, which you could pick up with an OBD reader, though what's provided there is true 0%-100%, not the 20%-80% charge (or whatever the truncated range is) that the gauge cluster shows as zero charge to full charge. I dunno what you do with that information other than for curiosity's sake, but it is an available PID.
Looking over some log files, it looks like the car reserves about 10%-15% on the top and 13% on the bottom. So from the OBD reader, full charge is about 85%-90% and zero EV range remaining is at 13%.Interesting. So at 0 miles left, it will show 10%, right?
EDIT: Looking over some more log files I see inconsistency in what the car is counting as fully-charged, from about 85% to about 90%. Numbers updated above.
Thank you for that information. Now I have some googling to do.If you need to know percent charge, it is exposed as a PID via the OBD port, which you could pick up with an OBD reader, though what's provided there is true 0%-100%, not the 20%-80% charge (or whatever the truncated range is) that the gauge cluster shows as zero charge to full charge. I dunno what you do with that information other than for curiosity's sake, but it is an available PID.
It is my understanding the health of the battery is better when it is kept near 50%. I don't drive many miles per day. Knowing the exact charge would allow me to calculate how high I should charge the battery (on a day where I use 20% of the battery, I would only charge the Prime to 60%).
I would not worry about the 50% number too much as that is not a hard and fast number. Just charge the car when you need it. If you have enough charge for the next day, then skip charging. Just wait to charge until the number of miles left is too low for the next days driving. Then fully charge the car and drive it. This will keep the battery so it is not fully charged and not fully discharged (although fully charged is really about 90% and fully discharged is about 14%). If you are not going to use the car for a period of time like a week or more, then leave the battery somewhere about 40-60% for that period.
Granted my knowledge of batteries is low, but I thought my battery would be happiest around 50%. If I charge it to full, it will sit in my work parking lot around 80% for the day & then in my garage at around 70% for the night. Would this have a negligible impact on the health of the battery over time?I would not worry about the 50% number too much as that is not a hard and fast number. Just charge the car when you need it. If you have enough charge for the next day, then skip charging. Just wait to charge until the number of miles left is too low for the next days driving. Then fully charge the car and drive it. This will keep the battery so it is not fully charged and not fully discharged (although fully charged is really about 90% and fully discharged is about 14%). If you are not going to use the car for a period of time like a week or more, then leave the battery somewhere about 40-60% for that period.
Sitting for short periods of time (a day or two) should not matter too much to the battery. It is more that sitting near full or empty for a week or two at a time that could be a problem. Also remember that Toyota only charges the battery to 90% even though the dash and app show 100%. When the app shows 30%, the actual charge is about 14%. The dash and app skew the actual battery level to prevent questions about why the battery does not charge to 100%.
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