This is a solar charged battery backup for My HP mini 1032NR. The solar panel is quite small so charging is less than fast, I have not tested it yet but I assume it will take in the neighborhood of a week or so. It's all OK, the entire thing cost less than $50. For a comparable manufactured product you will be spending well over $300.00 according to my research. A quick note on the Life PO4 batteries "wally world" has them in a pack of 4 for $10.00 you will need 2 packs. They can be quite fickle so be careful with your connections. Nobody wants these things to start a fire. If you like this instructable let me know via comment I wiil post some more of my gadgets. For gods sake use a miltimeter and know the voltage of your pc. This project can be applied to any laptop not to mention a large assortment of portable devices IF YOU KNOW THY VOLTAGE!
Step 1: Get your stuff together
You will need:
1 set solar Christmas lights (a solar garden light will work too)
Battery Holder(s) equal to 6 AA size
Male adapter (Size of laptop power input)
Male adapter (your choice)
Female adapter (matching your choice male)
Step 2: Open your solar panel
I used the xmas lights because all the little stuff was there I didn't need to worry about crap like resistors or diodes. You can use any solar cell just know what you are doing Life PO4's are nasty little things when they start a fire. Open the back remove the battery. Drill hole for power cord. Run your cord and knot the end. Use a soldering iron to disconnect the wires to the battery terminals. Now solder the terminal wires to the power cord. Take your male plug and solder to the other end of the power cord. Seal it all up and your set. Keep your + and - straight it's important stuff.