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Yes. Real nuclear battery can power things for several years. But that is generally in space. I mean I suppose I could give the battery a longer life span, but I was taking into account that the housing probably deteriorates making the potential leakages of radiation a risk, hence the regular replacement.
If thats the only concern that was given, but Ira has addressed it and I see no real problems with this vehicle. The nuclear battery might be a thing I'm looking at that could cause issues in the future (leakage) but regardless.