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	•	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