Based on data from my Sense Energy Monitor it would appear that after one of the recent software updates the battery charging behavior has changed.
Before my battery would drift a couple percentage points over night (perhaps in part due to cold weather), it would not recharge till it was down by at least 3%. But now it appears to kick back in about an hour after the initial charge finishes and presumably it "tops it off" after the battery cools a bit? It also has done it in the middle of the night long after charging has finished.
So I am pretty sure this is new behavior. I have also noticed lately that I am at 79% or 80% more often now in the AM.
Note that this could also be related to the weather (which is what I first assumed was the reason for higher battery state in the AM until I looked at these graphs). It has warmed up considerably in Oregon lately and I park outside. I suppose it is also possible that this has been the behavior for quite some time, but it only does it when the battery is warm enough to accept a charge without having to pre-heat the battery first?
Regardless, assuming this is not bad for the battery due to more charging sessions then I am all for it. It was annoying me to down some range every AM... When I set the car to 80% charge I kind of want it to be pretty close to there when I leave.
Note that you can tell when the car is charging compared to other loads in the house. The massive spikes are all the car (11.5kW). Everything else in my house is gas and so other loads are just noise. The yellow is solar production.
Before my battery would drift a couple percentage points over night (perhaps in part due to cold weather), it would not recharge till it was down by at least 3%. But now it appears to kick back in about an hour after the initial charge finishes and presumably it "tops it off" after the battery cools a bit? It also has done it in the middle of the night long after charging has finished.
So I am pretty sure this is new behavior. I have also noticed lately that I am at 79% or 80% more often now in the AM.
Note that this could also be related to the weather (which is what I first assumed was the reason for higher battery state in the AM until I looked at these graphs). It has warmed up considerably in Oregon lately and I park outside. I suppose it is also possible that this has been the behavior for quite some time, but it only does it when the battery is warm enough to accept a charge without having to pre-heat the battery first?
Regardless, assuming this is not bad for the battery due to more charging sessions then I am all for it. It was annoying me to down some range every AM... When I set the car to 80% charge I kind of want it to be pretty close to there when I leave.
Note that you can tell when the car is charging compared to other loads in the house. The massive spikes are all the car (11.5kW). Everything else in my house is gas and so other loads are just noise. The yellow is solar production.
