<mix...@bigpond.com> wrote:
> I don't understand why they didn't just use a different technology e.g. > NiMH. > That battery would have less capacity, but who cares if it's constantly > being > recharged by the main generators? > They need a certain capacity. As I recall, this an emergency battery backup for the controls. To give it the same capacity with NiMH they would have to make a larger, heavier battery pack. I don't think that would be an issue now, because the thing is small and they would not lose much payload, but it would be a major redesign and it might take a long time for approval. Batteries are a nightmare. I used to have no end of trouble with them back in the days of mainframes, minicomputers and big telephone switches. They would switch in too slowly. - Jed
