To design and develop an indigenous, cost-effective, and rechargeable battery system as an alternative to existing imported or non-reusable power sources used in practice torpedoes for naval training and evaluation exercises.Practice torpedoes are used extensively in anti-submarine warfare (ASW) training to simulate real engagement scenarios. These torpedoes rely on onboard power sources for propulsion, control, and data logging. Current batteries are either imported or non-rechargeable, leading to high operational costs and logistical challenges. Developing a reliable and rechargeable battery system will significantly reduce lifecycle costs and improve operational readiness.