Abstract: A converter for a rechargeable battery (e.g., lithium battery) is disclosed. In some embodiments, the converter includes a direct current (DC) to DC converter and a microcontroller unit (MCU). The DC to DC converter includes a switching circuit configured to generate a pulse width modulated (PWM) voltage from the rechargeable battery voltage, wherein the switching circuit is configured to set a variable duty cycle of the PWM voltage. The DC to DC converter also includes a filtering circuit configured to convert the PWM voltage into a DC output voltage having an output voltage level that is set in accordance with the variable duty cycle of the PWM voltage. The MCU is configured to adjust the variable duty cycle of the switching circuit such that the output voltage level of the DC output voltage emulates a discharge voltage curve of a dry battery while the rechargeable battery is being discharged.

Abstract: A battery package for providing power to an electronic device is described herein. In one embodiment, the battery package includes a casing configured to enclose at least one battery cell. The casing includes a wall having an internal surface, an external surface and a dimple. The dimple extends outward from the internal surface to an intermediate section of the wall. In a particular embodiment, the dimple is positioned to rupture under high pressure conditions and direct escaping gases away from selected components of the electronic device in which the battery package is housed.

Abstract: A charge storage device comprising: a first electrode; a second electrode being opposed to and spaced apart from the first electrode; a porous separator disposed between the electrodes; a sealed package for containing the electrodes, the separator and an electrolyte in which the electrodes are immersed; and a first terminal and a second terminal being electrically connected to the first electrode and the second electrode respectively and both extending from the package to allow external electrical connect to the respective electrodes, wherein the gravimetric FOM of the device is greater than about 2.1 Watts/gram.

Abstract: A charge storage device (1) includes a sealed prismatic housing (2). Two opposed folded rectangular aluminium electrodes (3, 4) are disposed within housing (2) and connected to the electrodes. A porous, electronically insulating separator material, e.g. Solupor™, sheet separator (7) is disposed intermediate electrodes (3, 4) for maintaining those electrodes in a fixed spaced apart configuration. An electrolyte (not shown) is also disposed intermediate the electrodes. Collecting means in the form of a scavenging agent is grafted to separator (7) for sequestering one or more predetermined contaminants from the housing.

Abstract: A solid secondary lithium electrochemical cell comprises a physical mixture of Li.sub.x Mn.sub.2 O.sub.4 (spinel) and at least one lithiated metal oxide selected from the group consisting of Li.sub.x NiO.sub.2 and Li.sub.x CoO.sub.2 wherein 0<x.ltoreq.2. The cell is particularly suitable for use with anodes composed of anodic carbon materials.