THey depend on light not batteries. Therefore no, they can't because there is always energy radiating from the sun.
By using solar energy to charge the batteries
Regular batteries will power a solar light until they run out of power. But regular batteries can't be charged from the solar cells unless rechargeable batteries are used instead. There is also a bit of circuitry involved.
Yes you can use regular batteries in solar lights but it won't work on some solar lights like the inwood solar lights but some inwood solar lights can run on regular batteries. But some solar lights can only work on rechargeable batteries and come on at dusk and off at dawn or after six hours.
Microwaves need electricity to run, but this is easily produced from solar panels. Campers and caravaners with solar panels and batteries have 12 volt microwaves that run successfully.
Micro R/C helicopters require batteries. Micro R/C helicopters require double A batteries. You will need plenty of batteries. http://www.ehow.com/how_6505592_control-micro-flyer-helicopter.html
There are numerous brands like Timex that have solar power watches to buy.
No, they don't
Hook it up to a solar panel instead !
yes
jet fuelWrong, sorry, many small helicopters have piston engines and run on gasoline.
does any solar light batteries work for Alpan
http://wiki.answers.com/Q/How_many_solar_panels_and_batteries_do_you_need_to_run_a_5000_watt_inverter"