http://news.cnet.com/8301-13579_3-57321061-37/apple-settles-split-cord-magsafe-lawsuit/

Try charging via firewire

Solar panels put out DC electricity Look at what your AC/DC power charger for you computer put out for DC. V is voltage A ( or I) is current in amperes W is watts (power) W=VA For example a MacBook. A 16.5 V 3.65 A is required to charge the battery. To find the power (W) 16.5 X 3.65 = 60.225, this the power required and is also the power of the solar panel you will need a 12V 60W rated solar panel You can also make a solar generator, a solar panel+ charge controller + a deep cycle battery and a power inverter.