2x AA AAA Battery Eliminator USB 5V to 3V Step down Cable Voltage Converter Line For Clocks Remote Control Toys Calculator CD Pl|3D Printer Parts & Accessories| - AliExpress
LER14250 - 3.6 V - 1200 mAh -Lithium Battery - ½ AA ("ER14250","LS14250C","14250","LS14250")