A Medical Device Application (MDA) is disclosed for an external device (e.g., a cell phone) that can communicate with an Implantable Medical Device (IMD). The MDA receives data logged in the IMD, processes that data in manners reviewable by an IMD patient, and that can control the IMD based on such processed data. The MDA can use the logged data to adjust IMD therapy based on patient activity or posture, and allows a patient to learn optimal therapy settings for particular activities. The MDA can also use the logged data to allow a patient to review details about IMD battery performance, whether such battery is primary or rechargeable, and to control stimulation parameters based on that performance. The MDA also allows a patient to enter medicine dose information, to review the relationship between medicinal therapy and IMD therapy, and to adjust IMD therapy based on the dosing information.

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.

A state of charge indicator including an indicator with a display threshold and an indicator circuit electrically coupled to the indicator such that when a main cell voltage of a main cell is greater than a display threshold, the indicator circuit applies a driver voltage to the indicator such that the indicator is inactive and when the main cell voltage is less than the display threshold, the indicator circuit applies the driver voltage to the indicator such that the indicator is active.

The invention is directed towards an electrochemically active cathode material. The electrochemically active cathode includes beta-delithiated layered nickel oxide. 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 14.92 to about 16.02; a second peak from about 21.32 to about 22.72; a third peak from about 37.12 to about 37.42; a fourth peak from about 43.22 to about 44.02; a fifth peak from about 59.62 to about 60.62; and a sixth peak from about 65.42 to about 65.92.

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.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.

The invention is directed towards an electrochemically active cathode material. The electrochemically active cathode includes beta-delithiated layered nickel oxide. 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 14.92 to about 16.02; a second peak from about 21.32 to about 22.72; a third peak from about 37.12 to about 37.42; a fourth peak from about 43.22 to about 44.02; a fifth peak from about 59.62 to about 60.62; and a sixth peak from about 65.42 to about 65.92.

A battery pack comprises a housing shaped to fit into a battery compartment of a battery-operated device. A battery is disposed within the housing. A light source emitting at least 50 lumens is mounted to the housing and is operably coupled to the battery such that the light source is selectably powered by the battery via a manually operated switch and the battery pack is configured to operate as a lighting device so that the battery pack can be used as a stand-alone lighting device. The battery pack has electrical connections for electrically connecting to the battery-operated device when the battery pack is inserted into the battery compartment of the battery-operated device. The battery pack includes a positive battery terminal and a negative battery terminal disposed on the housing and configured to contact a mating positive terminal and negative terminal of the battery-operated device.

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.

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.