While at W4DXCC I meet Lou Flex Radio guy there and was talking my 6600 order and LOU broke in said plug in your Maestro and boot up the Maestro and leave it plug in. This will keep you Maestro operational till your 6600 gets there. All is good now I boot up once a week and leave it plugged in. Hub batteries I have to deal with them in my job they drive me crazy. Battery manufactures say it will last for 1 year, most 3.6v batteries only last 3-5 months. Flex thanks for keeping US informed.