Solar Ni-cad or Ni-mh Battery Charger.
Intro: 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.
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.
STEP 1: Materials:
-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
-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
STEP 2: Disection
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.
cut the 2 wires leading from the circuit board to the solar cells, give your self room to work with.
STEP 3: Voltage Check
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
if its 3 volts use a 2 cell AA holder
if its 1.5 volts use a 1 cell AA holder
simple
STEP 4: Wiring and Soldering
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
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
STEP 5: Glue the Solar Cell
glue the solar cell so that it holds onto the battery holder in a way where it will face the sun while staying still.
STEP 6: Done!
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
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
27 Comments
spikeychops 14 years ago
itsthatsguy 14 years ago
doo da do 10 years ago
spikeychops 14 years ago
doo da do 10 years ago
hsdoofc 13 years ago
dlowther 12 years ago
golddigger1559 13 years ago
itsthatsguy 13 years ago
jasongroupindustries 13 years ago
I would like to know what is the current rating of the calculator solar panel.
itsthatsguy 13 years ago
jasongroupindustries 13 years ago
Thanks for the information.
I know now that in sunlight i can have more.
max1zzz 14 years ago
hansonsux 14 years ago
newberrys 14 years ago
itsthatsguy 14 years ago
newberrys 14 years ago
itsthatsguy 14 years ago
wcdeich4 14 years ago
hobbles 14 years ago