Exell Battery EB-R40, Type R40 1.5V battery is a direct replacement for the Energizer EN6, Eveready No. 6 or Rayovac Number 6 The No. 6 battery was largely popular staring around 1950. They were first used in 1893 for ignition of explosive engines. They are used in many applications such as self winding clocks, navigation mark, radios, communication equipment, lanterns, SPC telephone, railway lighting lamps, coal mining and more. The EB-R40 is ideal for low voltage, high-power demand applications. The have long shelf life and not subject to leaking. They are great as an emergency power supply Be sure to add on Fahnestock Clips for your school science experiments, hobby application, antique toy trains and special application. The fahnestock clips make it easy to connect bare wire to the battery safely and easily. Exell Batteries not only provide consumers with high efficiency, long-lasting performance, they also function as replacement batteries for an array of common and unique applications. Ranging from vintage camera equipment to sophisticated medical testing equipment, Exell Batteries can meet the needs of all consumers. Specifications Brand: Exell Rechargeable: No Output Voltage: 1.5V Amperage: 40000mAh Chemistry: Carbon Zinc Length: 5.83" Width: 2.44" Country of Manufacture: China Compatibility Blue Grass: EBG 46, EBG 96 Bluebell: KS 6542 Bond: No. 6 Burgess: No. 6 Columbia: No. 6 Energizer: EN6 Eveready: 7111, Number 6 Evergreen: HR-40 Franco: No. 6 French: No. 6 General: No. 6 Hercules: No. 6 Interstate Battery: DRY1725 Philco: No. 6 Rayovac: No.6 Royal: No. 6 Winchester: W 6 Zenith: No. 6