They are inherently different. A supercapacitor provides a high current over a short time (seconds). The thrust of the electromagnetic catapult scales with the current. The higher the current the bigger the pushing force of EMALS. Supercapacitors can provide insanely high instantaneous currents over a short time and can be quickly charged back for another discharge. Batteries provide a low current over a long time. They discharge slowly over time and charge slowly. They hold more energy per volume compared to supercapacitors. A bunch of cells comes together to form a "battery", and a bunch of supercapacitors forms a "bank".Supercapacitor batteries then.
Technically a battery is a batch of cells that carry charge, so.
American requirement of accelerating 45000kg to 240km/h complicates things our carrier will be much smaller than an American supercarrier and our launch weight will also be much lighter.
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