Why buy a portable power source that may cost over $150 when you can make your own for under half the cost.
This 'ible will show you how you can, for under $60, make you own portable power source that will be enough to power a small tv, converter box, and charge your phone all at once.
Disclaimer: Working with batteries can be dangerous, especially if you have no past experience. If you have any information on how to make this project safer or better, please tell me.
Step 1: Gathering Materials
two (2) 6 volt lantern batteries (with the caps);
1 small roll of electrical tape;
about 12 inches (1 foot) of speaker wire (it doesn't need to be heavy duty);
1 12 volt DC car cigarette lighter (with leads) (NOT ACTUALLY FROM A CAR);
Optional: AC/DC inverter (try to get something with 100 watts or lower so that it doesn't go right through the batteries)(this is only if you want to use a household appliance like a converter box or small tv that doesn't use batteries. Do not attempt to use a lamp)