Ultralife Corporation: Products and services ranging from portable and standby power solutions to communications and electronics systems. Through its engineering and collaborative approach to problem solving, Ultralife serves government, defense and commercial customers across the globe.

	•	UBI-2590 SMBus (NSN 6140-01-554-2347) is Rechargeable Version of BA-5390A/U This smart battery includes SmartCircuit® technology, which provides advanced features and functionality for advanced power solutions. Click HERE to read more.
	•	BA-5390A/U (NSN 6135-01-517-6060) Used in Over 50 Military Applications With 50 – 100% more runtime than the BA-5590U, the BA-5390A/U is the battery of choice for the soldier in the field. With its state-of-charge indicator, the BA-5390A/U can be fully utilized before swapping out. Click HERE to read more.
	•	Ultralife Batteries Brand Employs Fuel-Gauging Technology Fuel gauging (also called "gas gauging") is a "smart battery" process that maximizes battery use. Click HERE to read more.

UBI-2590 SMBus (NSN 6140-01-554-2347) is Rechargeable Version of BA-5390A/U