I couldnt tell you, it was in an older car of mine.

It did enough so that with headlights, heater, and a jbl 600.1 amp turned up all the way, the drain was not noticeable either visibly (no light flicker) or on a voltmeter( the shop manager hooks one up with everything turned on high to make sure ya got enough juice.)

And it worked well the entire two years the system was IN the car,
and stil works now (no system in that car now)

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94 Impala SS