Here's a great start for an OEM solar cell project. From not-yet-assembled solar-powered garden lights, these assemblies include two glass photovoltaic cells mounted on a plastic base. Output is approximately 2.6 Vdc @ 25 mA in bright sunlight. Under the photocells is a bracket to hold a two cell rechargeable AA pack and a small circuit board with three red LEDs. There is a photoresistor on top of the panel between the solar cells to sense light and dark conditions. In daylight the solar cells charge the battery. When it gets dark, the LEDs light. These are working units but the batteries packs are old and my not take a charge. Solar cell surface area: 3.78" X 1.98". MD711