According to procycle an extra 50 watts over stock. From their website.
A new high output stator for the DR650. 25% more output than the stock unit. Approximately 50 additional watts. Now you can have enough power to run those driving lights and/or heated riding gear.
50 watts might not sound like much but the stock lighting, ignition and battery charging consumes about 140 watts. This only leaves a maximum 60 watts available for additional accessories.
Good to know. I'm always on the look out for my next bike;) The Harleys stay constant but I like riding all bikes. The DR650 is a bike I've never owned. It would remind me of my old Suzuki TS250 in a way. As far as electrical capacity goes, I don't care about lights; I wanna stay warm!