Ultralife Batteries has designed a Lithium Ion rechargeable battery to meet the immediate needs of customers looking to power current and next-generation portable electronic devices. The UBI-2590 Lithium Ion rechargeable battery, with two independent 15-volt sections, each with separate protection electronics and capacity gauges, enables users to operate the battery in either 15-volt or 30-volt modes. Like all Ultralife batteries, the UBI-2590 has high rate capability, is lightweight, has high energy density, long operating life, long shelf life, and operates in a wide range of temperatures. Initially developed for rugged applications in the defense and homeland security markets, the size, weight and convenient form factor of the UBI-2590 have been extremely advantageous to developers in many commercial markets such as scientific research and surveillance.