Have a crappy UPS that glitches the router. Will a cap on the 9V work? 5 watts, 9V, 1 second. That's 500mA... or 500000uF Hmm... doesn't look like this will work. Pretty big cap. Even if it glitches for only .1 second it's still 50000uF. Box says 12V, but does it actually run off of a 9V battery? Let's wait until the plugs arrive since I'd have to cut it open..