Aluminum-Silver oxide (Al-AgO) SWA battery is a reserve lightweight and light volume primary type-high energy and power density battery. The battery is the most powerful in its class, and is being developed indigenous for lightweight torpedo application. The battery is shell integrated and comprises electrochemical pile stack, electrolyte management system, etc. EPS consists of multiple cells stacked under end-to-end compression in a pile configuration. EMS consists of mode valve, solid electrolyte reservoir, thermostatic valve, heat exchanger, gas separator, recirculation pump and bldcmotors(3kW and6kW) & control drives (3kW and6kW), valves, diaphragm, sensors, electronics control units, etc. All the components with lightweight, low volume and with required functionalists are integrated in a shell as a single unit with electrical and mechanical interfaces of other sub-systems of the vehicle.