Amazon.com: 4.5V 1Amp AC to DC Adapter Power Supply, 4.5W 1000ma AC 100-240V to 4.5V, 2.5mm X 5.5mm Plug(Pay Attention to The Size. Make Sure it Works for Your Products) : Electronics
Amazon.com: POWSEED DC12V Car Charger 34W Universal Power Adapter w/USB Port for Dash cam Breast Pumps Speakers Smart Phone Tablets & Micro USB Devices, Output 3V 4.5V 5V 6V 7.5V 9V 12V
Replacement Charger 4.5v 4.7v 160ma 4 Ryobi 4v Lithium-ion Cordless Screwdriver Csd4130gn Csd41 5v 2a Power Supply Adapter - Buy Screwdriver Power Suppply,4.5v Charger,Screwdriver Charger Product on Alibaba.com