If you need to use it, you need to charge it. However if you can plan it, you may not need to charge it daily. Figure this, I went to VA last week. From the hotel to the field is 7 miles. I charged it overnight at the hotel, went to the field, went back to the hotel, didn't charge it. Went back to the field, then charged it at the field just enough to make it back to the hotel (<1 hour and I quit charging when I saw the battery temp rising). Then charged it at the hotel overnight again when the temps were cooler (some days were 85F in VA).
So instead of going 100%-50% and back up to 100% I went 100% to 0% or close to it (I think around 10%) and then back up. But you might want to do other things so charge it to 100% if you think you will use more of it. Nothing wrong with using the battery to commute back and forth daily all the time, though after about 2 to 3 years you might wear it out quickly if that is all you use to go to work. Remember that the battery has several life factors that cause degradation:
#1 the amount of charge/discharge cycles
#2 the average temperature of the battery pack
#3 the average charge level of the battery pack
#4 height and depth of charge/discharge with a temp factor added in
So at the end of the day, #1 try to keep the battery not fully charged all the time unless you need it. Don't get me wrong, whenever I need to run errands and think I might need most or all of it I charge it all the way, but if I am going to the grocery store and they have a charger there for example, I put in enough to get there, use their charger, and have enough to get home without hitting empty or full charge. If they don't have a charger there I put enough to get there and back with about 5-10% to spare try not to dig into the hybrid battery if I can plan it right.
#2 try to keep the battery life easy, don't stress it, don't go more than 2 bars on the battery and if you have to go 2 bars for a long time (a long hill) consider taking a different route or prestarting the engine so it can take some of that load off the battery as extended 2 bar usage raises the battery temp quickly. This translates to never drive more than 50mph on the highway on the battery if you intent to use the whole battery. A short spurt for 1 exit going up to 60 is OK but watch and think about your continuous draw of the battery. If its downhill you're not concerned, but trying to maintain 50 on an uphill on the highway is even a concern for me. At the end of the day, this is not an electric only car, you DO have an engine, use it once in a while its good for the engine to run sometimes too. But use the engine and warm it up, not 1 mile here and there only, that could backfire and cause water in the oil forcing an oil maintenance mode. By not an electric car, you have to understand that the battery is quite small compared to electric cars only, so high loads on it are pretty stressful. I mean you can draw up to 200 amps out of the battery if you floor it, at 2 bars you are at 80-100 amps range, and that battery is 25 amp/hr so you can draw 8C out of it which is alot compared to an electric car that has 10x that battery so 200 amps would be closer to 1C. Does that make sense? The battery in this car is meant for light loads, you are dragging a whole second propulsion system around, a complete engine, transmission and 14 gallon gas tank, so its definitely hard on the battery to lug all this around and give you speed and climb hills. Keep that in mind and the battery will last 10 years nicely, abuse it and you join the 3.x kwh capacity remaining club, alot of those guys around. I've been saying this for years but many did not believe me sadly... With all this being said, my personal limit I try to stay below 80 amps draw on the battery, try to use around 65 when accelerating and such. people behind me tailgate and get upset sometimes, I apologize though they can't hear me, it is what it is. I go faster if I have an engine running, but still no more than 2 white bars anyways for efficiency though up hills it can be more up to 3 on the highways at cruise.
#3 the nominal range of this car should be between 22 and 37 miles. If you are getting less than 22 miles and have a good battery you are driving it too hard or using heat. Try not to use heat remember it adds 1 bar of load all the time on the battery, use the engine for heat if you must, dress for it, or only use it when its cool outside but not when its freezing or below. (electric heat is costly).
Below if a picture of my car's range, I get about 30 these days with the temps in the 50-70 range. Will be more in the summer like you say, as there is less air resistance and gear oil is more fluid, but worse on the battery due to elevated temps I have to watch it more like a hawk. The nice thing is that in the winter you don't have to worry about battery temp at all, you can do what you do its never a problem. The season to watch and be careful is now through October.
Edited by rbort, 10 May 2019 - 06:03 AM.