F21 Heavy Torpedo scale model
AgO-Al battery technology is unique to Saft and was developed with DCNS specifically to propel heavyweight and lightweight torpedoes. It delivers twice as much energy and power as conventional silver-zinc batteries for the same mass and volume. The AgO-Al cell chemistry is a primary battery chemistry that is only activated when it comes into contact with seawater – which acts as the electrolyte - meaning that it is fully safe for long-term storage in submarines.
‘This latest contract to supply electrochemical stacks for the F21 torpedo is further consolidation of Saft’s near-30-year relationship with DCNS and cements Saft as the world leader in electric propulsion batteries for heavyweight and lightweight torpedoes’ said Serge Fouilhaux, Director of Saft’s Space & Defence Specialty Battery Group. ‘Silver oxide-aluminium electrochemical stacks are unique to Saft and offer unrivalled performance, reliability and safety for torpedo applications.’
In a separate contract, Saft has also supplies rechargeable lithium-ion (Li-ion) batteries to DCNS to power unarmed exercise torpedoes. Unlike the single-use AgO-Al batteries, the Saft Li-ion batteries can be recharged when the torpedo is recovered after firing, providing very cost-effective power for training exercises.
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