True about 3 db but not really on battery life. Power usage is not linear in that the efficiency drops as you reduce power on a 100 watt rig so savings are not as big as you think. Also a 100 watt rig at 5 watts out draws a lot more power than a true QRP rig. So if you want minimal weight to carry and good battery life a rig like a KX3 makes a lot of sense. Better rig than 817.