Por calendario en post más atrás calculaba que al O´Higgins le toca cambio de baterías (vida media de 9 años, último cambio de baterías en 2016 y el Carrera en 2018).Buen video sobre los 20 años de operación del submarino O'Higgins en la ACh
Ya los Blackshark con el cambio de sus baterías en 2018 quedó como Advanced Blackshark (adoptan justamente una batería de litio)
https://www."info-defensa".com/texto-diario/mostrar/3123033/submarinos-armada-chile-proyeccion-poder-naval-pacifico-sur#:~:text=Estos%20submarinos%20disponen%20de%20ocho%20tubos%20para,Atlas%20Elektronic%20o%20misiles%20SM-39%20de%20MBDA. (extraer comillas y guión de "info-defensa" en el link para ver)
Decía por aquel entonces que ojalá se aproveche la oportunidad de este año para dar el salto a la tecnología Litio-Ion.
Otros ya vienen haciendo upgrades de retrofit:
Lithium Batteries May Soon Power ‘World’s Largest Fleet’ of Submarines - Basengreen LiFePO4 Battery Lithium Iron Phosphate Residential C&I ESS Manufacturer
China plans to upgrade its conventional submarines with lithium-ion batteries, a power move that could significantly increase its fleet’s combat and survival capabilities. The Chinese Navy could finally use lithium technology to replace the lead-acid batteries that are now used in its fleet of...
www.basenpower.com
Next-gen lithium-ion batteries to enhance allied submarine capability
L3Harris has achieved a significant milestone, delivering the first production of autonomous undersea vehicles powered by lithium-ion passive propagation resistant batteries certified for use on US submarines.
The Indonesian Scorpène® submarines will be fitted with a cutting-edge energy system based on a full lithium-ion configuration which encompasses the highest security and safety standards and allows a higher range of useful energy, a better indiscretion rate and a reduced charging time. Thanks to this technology, high speed is available no matter the state of charge, increasing the submarine tactical mobility.
Naval Group and PT PAL have signed a contract with Indonesia for 2 locally built Scorpène® Evolved Full LiB submarines | Naval Group
As an international naval defence player, Naval Group is a partner for countries seeking to maintain control of their maritime sovereignty. Naval Group develops innovative solutions to meet its customers’ requirements. Present throughout the entire life cycle of vessels, it designs, produces...
Saludos