View Full Version : Watts used

08-06-2009, 07:00 PM
the output on my bike UB12STT) manual shows 405 watts. What is the total wattage normally used under normal runnig. I was thinking of adding some electrical items and I need to know what the usage is under normal operating conditions.

08-06-2009, 09:44 PM
Wow, that's an awesome question... Quick math gives you about a 30 amp capacity out of the charging system. I have no idea how much power the ignition system uses, but you've got around 100 watts (rough guess) of lights going at all times. I'd guess the fuel pump is probably drawing 3-5 amps. (about 36-60 watts).

The best way would be to get an ammeter inline with the voltage regulator. (connection #77 in the 05 xb12r manual page b-29). Fire the bike up (make sure you bring the RPMs up a little bit) and watch the current draw for a while.

What kind of goodies are you planning on adding?