TOSHBA ER3V/3.6V Non-Rechargeable PLC/CNC Ultra Lithium Battery with Plug Original Toshba ER3 Cylindrical Lithium Batteries are notable for their high voltage, energy density, durability, and stable operation. Many PLC/CNC Memory back-up machine have using the ER series lithium battery ,deal to Toshiba ER3 lithium battery give a long shelf life and , This is good in for stand-by application.