Amazon.com: BAOBUTE 2Pcs ER6C AA PLC Battery 1800mah 3.6V Original MAXELL Replacement for FX F2-40BL FX1N PLC with Plug, ER6C AA/F2-40BL, 14*50.5mm : Health & Household
ER6C Lithium Battery 3.6 V 1.8 Ah, Maxell - Coast & Middle East Electrical Devices