Solar Ni-cad or Ni-mh Battery Charger.

hey guys i broke my wrist this instructable took awhile lol. anyway this is a way to charge 2 batteries of your choice using the sun!

every material used as recycled

if you like this instructable please vote for it in the epilog '09 contest

i used my scanner to get this pic.

-an old broken solar calculator to take apart for the solar cell.

-a side style 2 cell AA battery holder buy one or get one from an old kit or electronic device that is broken.

-a diode - just an ordinary diode NO LEDS THEY WASTE POWER

-wire

-a volt meter or multimeter

take out the screws from your solar calculator.
cut the 2 wires leading from the circuit board to the solar cells, give your self room to work with.

check the solar cells voltage using your meter, make sure the cell is in direct sunlight when your measuring it.

if its 3 volts use a 2 cell AA holder
if its 1.5 volts use a 1 cell AA holder
simple

uhhh this is easy
the red wire on the cell goes to the diode and then the red wire on the holder
the black wire goes to the other black wire

solder all this together

glue the solar cell so that it holds onto the battery holder in a way where it will face the sun while staying still.

this takes a while to charge 1-3 days for a full charge depending on the Mah

3 days for 2500 Mah batteries
1 day for 1000 Mah batterries

Have fun.

every material used as recycled

if you like this instructable please vote for it in the epilog '09 contest