page 119 rt125 shop manual
26 watts ac at 1500 rpm
190 watts ac at 10500 rpm
so if you are using more than 125 watts you will probely have
trouble keeping the battery charged
i some times use a motrola commerical 25 watt police style radio
coverted to ham radio it is very low power on recieve but
on transmit it is like turning on a extra head lamp
so i use an extra battery in the saddle bag with it
i use it to talk to the wife at home so we do not have call phones