Decided to rip off my Solar Focus Mio and reconstruct it. Reason for doing that, the rubber casing around the SF Mio started to crack and there is no option for direct USB charging.
- Femal USB connector
- Heineken Box
- Duct Tape
- Shrink Wrap
The female USB connector was first stripped and removed the wire insulation. There were four colored wires only red and black was needed. Shrink wrap was used for the insulation.
Re-solder the wirings, the panel are connected in series so it becomes a 6Vdc Solar panel. To join the panels together I used a 2-1/2 inch duct tape cut in half and joined the solar panel together.
Cut the shape out from the Heineken box, glue the solar panels on it and duct tape around it.
Added 2 holes for securing on to backpack
|The Heineken box have a latex coating on the outer skin so this will have some water repellency.|
These solar panels are water proof, each panel is a 2V 420mA. So far it was able to charge my 10,000mA Battery Bank, however with my phone it was not charging. I think the ampere out from the Solar panel is insufficiency to charge the phone. Well.. will try again when the sun is out.
If you need to buy solar panels, it is important to know what output you need. Normally panels are rated in V (voltage) and W (watts). Then calculate how you want to connect the panel, in Series or Parallel. Connecting in Series will increase Voltage and connecting in Parallel with increase the Ampere.
So in another words, my this current solar panel to completely charge my 10,000mA power bank @ 420mA will take around 3 days with 8hrs sun each day....DOH