We're beating the slider setting to death in the other thread. I'm going with 50% when leaving for 3 weeks. Assuming I get 4.5 by departure date. Can anyone see a reason to prefer the HPWC or the UMC for plugging in the whole time I'm gone? How about charge rate? 60 (HPWC)? 40 (UMC)? Or something lower with either/or? Your thoughts please?