Special Features:

The bb-490 is no longer supported or supplied by dod. If required for an uninterruptible power suppl (ups), you should call the ups vendor for battery replacement or purchase a new system that uses standard dod bb-390 and/or bb-2590. If your requirement is to be used for power radios or other equipment, the bb-2590 may be used as a suitable substitute (nsn: 6140-01-490-4316) . For futher assistance, contact cecom item manager.

Properties:

A battery, composed of two or more cells forming a single unit, which may or may not be readily separable and which may be efficiently recharged by sending an electric current through the cells in a direction opposite that of the discharging current. the item may be furnished with integral charging facilities. for items which are composed of a single cell see cell, battery.