Originally Published MPMN July/August 2005
High-Voltage Lithium Battery Powers Up Portable Devices
|High-voltage AA-sized lithium batteries are suitable for use in portable medical devices.|
A high-voltage, high-rate lithium battery is designed for use in portable medical devices. Tadiran Batteries (Port Washington, NY) has developed the TLM-1550HP to pack 2 Wh of energy at 4 V into an AA-sized cell. Its power capacity and small size makes it suitable for use in devices that require high power, long life, and extended storage, such as automatic external defibrillators, cauteries, resuscitation equipment, bone healers, and handheld surgical power tools.
The battery can handle pulses up to 15 A, with 5 A maximum continuous load. It offers long life in extreme environmental conditions, including a self-discharge rate of less than 3% per year at room temperature, and a temperature range of –40° to 85° C. The company also offers models that can withstand sterilization temperatures up to 125° C.
Solvents used in the battery are nontoxic and nonpressurized, and its anode material is less reactive than that found in other lithium cells, according to the company. Its safe design allows the battery to be shipped as a nonhazardous product. The unit also features a glass-to-metal hermetical seal, instead of a crimped elastomer gasket.
The battery has performed well in a variety of safety tests, including nail penetration, crust tests, high-temperature chambers, short circuits, and charge tests.
Copyright ©2005 Medical Product Manufacturing News