Abstract: Provided are a meter reading device, an attachment member, and a remote meter reading system. The meter reading device includes a recognition unit configured to recognize a measurement value measured by a meter device from an image picked up by a camera and generate numerical data indicating the recognized measurement value, a transmission unit configured to transmit the numerical data generated by the recognition unit to a storage device installed on a network, a mirror arranged so as to be opposed to a display surface at a given angle, and other components. The attachment member enables attachment of the meter reading device to the meter device. The remote meter reading system allows the measurement value displayed on an existing meter device to be checked at a remote location.

Abstract: Provided are a meter reading device, an attachment member, and a remote meter reading system. The meter reading device includes a recognition unit configured to recognize a measurement value measured by a meter device from an image picked up by a camera and generate numerical data indicating the recognized measurement value, a transmission unit configured to transmit the numerical data generated by the recognition unit to a storage device installed on a network, a mirror arranged so as to be opposed to a display surface at a given angle, and other components. The attachment member enables attachment of the meter reading device to the meter device. The remote meter reading system allows the measurement value displayed on an existing meter device to be checked at a remote location.

Abstract: A lithium secondary battery includes a negative electrode active material. The negative electrode active material includes a primary active material and a secondary active material. The primary active material is at least one member selected from the group consisting of carbonaceous materials, Sn, Sn alloys, Sn oxides, Al, Al alloys, Pb, Pb alloys, Si and Si oxides. The secondary active material includes a lithium nitride expressed by a composition formula, Li3−xMxN, in which “M” is at least one element selected from the group consisting of transition metals and “x” is 0<“x”≦0.7. In the lithium secondary battery, the negative electrode retention is relieved efficiently, the capacity is less likely to change suddenly, and the wasting of a positive electrode material is less.