Technical Paper
Fielded Lithium Ion and Nickel Metal Hydride Battery and Charger System for U.S. Army
1999-04-06
1999-01-1405
U. S. Army developed the Nickel Metal Hydride (NMH) BB-390 battery, Lithium ion battery BB-2847 and two hours charger for PM Night Vision thermal devices and PM Sincgar radios. The BB-390 can provide 240 watts (10 Amperes at 24 Volts) of power for transmit for the radios. The BB-390 battery replaced the BB-590 nickel Cadmium battery. The BB-390 battery contains 40 “A” size cells and provided up to two times the capacity over the nickel cadmium battery with same weight. During charging the BB-390 NMH battery, the battery will heat up to as high as 57 C. This NMH battery contains 10 thermos devices for protection during both charge and discharge. The BB-2847 lithium ion battery contains 6 each 18650, It provides 26 watt-hours These batteries are protected from external short as well as overdischarge.
