Last night I plugged in with a nearly depleted battery, but this morning the cooling fan was running. Didn't think much of it, but when I went back out a couple hours later the fan was still running. The graph produced by my juicebox shows it was doing something for hours after it completed its main charge. Does it go through reconditioning cycles, did I configure something or is this expected? Normally that charge would be about 8kWh, but last night it was 11.5. Seems strange to run all night like this. Any thoughts?