An electrolyte level gauge includes a housing defining a condensation chamber having a plurality of condensing elements disposed therein. The condensation chamber is in fluid communication with an electrolyte through a first vent aperture and an ambient environment through a second vent aperture. The electrolyte level gauge further comprises a sight member having a hollow interior and an indicator having a first end slidingly disposed in the hollow interior of the sight member and a second end including a float. The float is configured to be buoyant on the electrolyte.

The invention is directed towards a battery. The battery includes a cathode, an anode, a separator between the cathode and the anode, and an electrolyte. The cathode includes a conductive additive and an electrochemically active cathode material. The electrochemically active cathode material includes a beta-delithiated layered nickel oxide. The beta-delithiated layered nickel oxide has a chemical formula. The chemical formula is Li.sub.xA.sub.yNi.sub.1+azM.sub.zO.sub.2.Math.nH.sub.2O where x is from about 0.02 to about 0.20; y is from about 0.03 to about 0.20; a is from about 0 to about 0.2; z is from about 0 to about 0.2; and n is from about 0 to about 1. Within the chemical formula, A is an alkali metal. The alkali metal includes potassium, rubidium, cesium, and any combination thereof. Within the chemical formula, M comprises an alkaline earth metal, a transition metal, a non-transition metal, and any combination thereof. The anode includes an electrochemically active anode material. The electrochemically active anode material includes zinc, zinc alloy, and any combination thereof.

An electromechanical surgical system is provided and includes a hand-held surgical device. The surgical device includes a device housing defining a connecting portion for selectively connecting with an adapter assembly, the housing being configured to removably receive a battery therein; at least one drive motor supported in the device housing for controlling power delivered from a battery to the motor. The system includes a battery configured for disposition in the device housing, the battery being capable of powering the at least one drive motor, the battery including at least one display. The device housing is configured such that the at least one display of the battery is visible therethrough.

An electronic cigarette includes a cigarette housing, a cartridge received in the cigarette housing, a vaporizer, and an intelligent battery module. The intelligent battery module includes a battery casing, a battery supporting tray for accommodating at least one battery, a Printed Circuit Board (PCB) supported in the battery casing and is electrically connected to the battery supporting tray, a Main Control Unit (MCU) implemented on the PCB, and a resistance detection circuitry implemented on the PCB for detecting a resistance of the heating element. When the resistance of the heating element reaches a predetermined upper threshold, the MCU is configured to lower or cut off a voltage supplied to the heating element. When the resistance of the heating element reaches a predetermined lower threshold, the MCU is configured to supply a normal voltage to the heating element of the vaporizer.

A battery cell includes a generally battery cell and removable elements which providing a function for battery users to mark the battery status of used or dead.

An electrolyte level gauge includes a housing defining a condensation chamber having a plurality of condensing elements disposed therein. The condensation chamber is in fluid communication with an electrolyte through a first vent aperture and an ambient environment through a second vent aperture. The electrolyte level gauge further comprises a sight member having a hollow interior and an indicator having a first end slidingly disposed in the hollow interior of the sight member and a second end including a float. The float is configured to be buoyant on the electrolyte.

The invention is directed towards an electrochemically active cathode material. The electrochemically active cathode includes beta-delithiated layered nickel oxide and an electrochemically active cathode material selected from the group consisting of manganese oxide, manganese dioxide, electrolytic manganese dioxide (EMD), chemical manganese dioxide (CMD), high power electrolytic manganese dioxide (HP EMD), lambda manganese dioxide, gamma manganese dioxide, beta manganese dioxide, and mixtures thereof. The beta-delithiated layered nickel oxide has an X-ray diffraction pattern. The X-ray diffraction pattern of the beta-delithiated layered nickel oxide includes a first peak from about 14.9 2 to about 16.0 2; a second peak from about 21.3 2 to about 22.7 2; a third peak from about 37.1 2 to about 37.4 2; a fourth peak from about 43.2 2 to about 44.0 2; a fifth peak from about 59.6 2 to about 60.6 2; and a sixth peak from about 65.4 2 to about 65.9 2.

An electrolyte level gauge comprises a housing defining a condensation chamber having a plurality of condensing elements disposed therein. The condensation chamber is in fluid communication with an electrolyte through a first vent aperture and an ambient environment through a second vent aperture. The electrolyte level gauge further comprises a sight member having a hollow interior and an indicator having a first end slidingly disposed in the hollow interior of the sight member and a second end including a float. The float is configured to be buoyant on the electrolyte.

The technology relates to a capacity indicator for use with a battery. One aspect of the technology provides an improved activation circuit for a capacity indicator that is easier to use and less prone to false alarms. A further aspect of the technology provides an improved indicator which is able to indicate battery capacity without requiring the use of expensive battery labels such as thermochromic strip. A further aspect of the technology provides a capacity determination circuit which is housed within a battery and which is able to provide a more accurate indication of battery capacity.

A reusable battery indicator includes a voltage sensor, a communication circuit communicatively connected to the voltage sensor, an antenna operatively coupled to the communication circuit, and a connection mechanism having a connector and a retainer. The connector and the retainer are electrically connected to the voltage sensor, and the connector is adapted to be removably connected to a first battery terminal, thereby providing an electrical connection between the voltage sensor and the first battery terminal. The retainer is adapted to removably secure the voltage sensor to a can of a battery, thereby providing an electrical connection between the voltage sensor and the can of the battery. An electrical circuit is completed between the voltage sensor and the first battery terminal and between the voltage sensor and the can. The connection mechanism includes part of an electrical lock and key assembly.