Silent Overwatch for Infantry Combat Vehicles using Fuel Cell / Alternate Fuel based Auxiliary Power

ICV BMP-2 deployed in High Altitude Areas (HAAs) presently have lead acid secondary batteries which are used to supply power to radio Surveillance equipment in the engine switched off mode. Prevalent low temperatures at High Altitude Area results in low charge holding and faster discharging of 24V secondary batteries of ICVs. The situation becomes critical operationally when there is a need for silent watch (main engine switched off while surveillance devices & radio sets are on).