solar powered water boiler

by michael
(sydney/n.s.w)

My question is:

I asked Korjo website had they invented
a solar powered or battery operated water boiler
at all..cause i thought i had seen one in a store awhile back

but they said no
just a normal mains that you can use with a car one

said it would waste too much battery or not enough solar power to heat up
the water in it

but i wasn't asking about a jug
i replied in a cup

which wouldn't take that long to boil at all
and since i don't have a car for bushwalking
there is no way i can heat up water unless i buy canister cooker..but am looking for a battery operated one or solar powered one

if someone invents or can make me ..
one please tell me

have asked a lot of online stores
but no one seems to care about that market
..that doesn't have a car

so any help with this or some other idea of boiling water via sun

we have restrictions on fire down here, maybe that's why?


Thanks for any help

Michael.