Using solar panels to recharge a cordless drill battery allows you to have a way to charge your drill's batteries in even the remotest of work locations. With some simple guidance, you can build a charging system that will use renewable energy to charge a cordless drill's battery. Then you do not have to worry the next time your drill's battery goes dead and there is no place to plug in the charger because you can simply charge it with the solar charging system.
Set the 12 volt battery into the battery box. Wire the battery's positive and negative posts to the battery box's positive and negative posts. Use the 8 inch long 12 gauge wire with alligator clips to do this.
Attach the positive and negative wires coming off of the inverter to the positive and negative posts of the battery box. Use the alligator clips of these wires to clip onto the positive and negative posts of the battery box. This will secure the inverter to the battery box.
Attach the positive and negative wires coming off of the two 5 watt solar panels to the positive and negative posts of the battery box. Use the alligator clips on the wires coming off of the solar panels to clip onto the positive and negative posts of the battery box. This will secure the solar panels to the battery box.
Plug the cordless drill battery charger into the 12 volt to 120 volt inverter. The inverter will provide power to the cordless drill battery charger.
Now place the cordless drill battery into the charger. The charger will now charge the battery once the solar panels are placed into the sun.
Place the solar panels into the sun. Leave the solar panels in the sun for about 8 hours. The panels will now charge the 12 volt battery. The drill battery is now charging through the inverter that is connected to the 12 volt battery. The drill battery will be charged and ready for use after the solar panels are in the sun for 8 hours.
If the cordless drill battery charger for your drill battery is a rapid charger such as those found on some Ni Cad batteries, your battery may charge in as little as 4 hours.
Use caution when working with solar panels and keep them out of the sun until all components are connected as they start producing electricity as soon as the sunlight hits the solar panel. When connecting the positive and negative wires of the battery, inverter and solar panels, make certain that you are connecting positive wires to positive posts and negative wires to negative posts. Failure to do so will short circuit the charging system and cause it to explode.