what are you charging you eneloops with, maybe they are not getting a complete charge, I get maybe 5 minutes difference between eneloops and lithium.
base camp looked nice but is using .net so even on a quad core processor with 8G ram its extremely slow. For those that don't develop or support .net is designed to make programming easier and makes extremely bad code which wastes a lot of resources and has a lot of problems. Any time you have a software vendor that needs any version of .net installed you know you'll be in for multiple support calls.
I've stuck with an older version of mapsource because its the last that will work under wine but recently found an open source package called viking that looks similar so I hope I can replace it. That will be the last program I need wine for