I do, too, but technology sooner or later makes most things obsolete.

Who would have thought in 1994 - the year I first started to explore digital photography - that digital would eventually drive Kodak into bankruptcy? That 99.99% of all new Nikons and Canons would be digital by 2000?

BTW, one can recharge batteries for 2 fliers all day long with the 1000-watt Honda generator that consumes about 2.5 liters of gasoline. And the generator weighs less than half what one of those car (or marine?) batteries weighs. With a 24-volt power supply, recharge a F3A pack in about 35 minutes.