Lithium attack!

Silver zinc has been the traditional chemistry of choice for torpedo batteries but as a team Yardeney explained at  last September's International power sources meeting, lithium ion is becoming increasingly attractive.

Torpedoes and underwater weapons systems have relied heavily on silver/zinc technology batteries to provide their power requirements. However, with the limited cycle and wet life, and high maintenance costs of Ag/Zn cells, many applications are seeking viable alternatives. Lithium-ion batteries offer the high energy and power densities required of many of these applications, with significantly greater cycle and shelf life, and much less maintenance . . .