Build a portable, 10 watt polycrystalline Solar Power Pack with an 18amp hour battery to take camping, boating or for emergencies. This portable DIY solar generator and battery pack is easy to build with components from Amazon. This is also a scalable design that will allow you to add more solar panels as needed.
The designer recommends using 10 watt solar panels mono crystalline or poly crystalline for the maximum amount of power in a small size. He also recommends avoiding Harbor Freight 10 watt Black amorphous panels because they are too big to be portable.
Se complete instructions, wiring diagrams and more build pictures here: