Sunnytech 1pc 3W 12V 250ma Mini Small Solar Panel Module DIY Polysilicon Solar Epoxy Cell Charger B047

Ideal for small projects: Such as emergency lights, advertisement lamps, traffic lights, household lights, electric fans, solar water pumps, solar street lamps, etc.Features: Material: polysilicon Max.power: 3W Max.voltage: 12V Max.current: 250mA Size: 145*145*2.5mm/5.7*5.7*0.1in Weight: 80g/0.18Ib Package Content: 1*solar panel Configuration Relationships between solar panel and storage battery Storage Battery Solar Panel 1.2V /xa02V ~ 2.5V 2.4V /xa03.5V ~ 4V 3.6V /xa05V ~ 6V 6V 7.5V ~ 9V 12V /xa015V ~ 18V When the voltage of your solar panel doesnt satisfy your storage battery, you can take two or more same solar panels together in series.Such as, two 5.5v solar panel connect together in series, so its voltage is 11V.When the voltage of solar panel satisfies your storage battery.In order to speed up the rate of charge, you can take two or more same solar panel together parallel connection.'