Fuego

It's a 2001 R6. Any suggestions?

I bought my bike a few months ago, as soon as I bought it I noticed all of my electronics would shut off then the bike would backfire and then shut off completely. The bike would act like the battery was dead. I replaced the stator and regulator along with all of the plugs and fuel filter and battery. Everything was going good the bike was running very well for a week or so and all of the sudden the same thing began to happen again. In the interest of saving money I did buy an off brand type regulator and stator. Any suggestions on what to do now?