Moen 8560BL M-Power Matte black soap/lotion dispensers Matte Black

I installed this in my kitchen. My wife did not think she would like it, but now, she cannot live without it. We found some great smelling soap on Amaazon. So far, the dispenser works great and seems to use little soap from the reservoir. I wonder how long the batteries last or whether there is an AC power supply available like our Moen hands-free water faucet. Great product!