Solar Cell Polycrystalline 2x2 (50mm x 50mm) NO TABS

Solar Cell Polycrystalline 2x2 (50mm x 50mm) .5-.6 Volts, 1 Amps, .5 Watt, 15% efficiency, 300um thick. Sold in lots of twenty eight. NO TABS Why are our solar cells bundled in quantities of 28? There are several reasons we do this. First we need to have just the right amount bundled together (not too many or too little) to prevent breakage during shipping. Second twenty eight cells linked in series gives us about 14-15 Volts of power which is nearly perfect for charging most 12V batteries. Finally, from our own solar panel building experience we have found that trying to build a very large dimension solar panel creates difficulties during manufacture, handling, installing and configuring electrically the solar array. It works best for us with multiple of easily handled 28 cells 14V panels. Our method makes it easy to configure a 12V, 24V, 36V or 48V and still remain below 16Amps of current which works with most other solar components. Another advantage is that it makes it possible in some instances to charge batteries in small systems without the need of a charge controller.