Highest efficiency Polycrystalline Silicon Sunpower Solar Panel ensure a high energy conversion rate greater than 19.5%. 1 Solar with 5521 Output. Short Circuit Current: 210MA. Simple and basic design allows you DIY and attach it to fixed position in any place.
21W Portable Solar Panel Charger Waterproof Foldable Solar Panel with USB Port Compatible with iPad Outdoor Fast charging: This solar charger made of 3pcs solar panels, max power is 25W. The USB connector can output 2A current for charging 5V digital product. Safety with No Battery Inside: Non-battery inside. It can withstand high temperature, It doesn’t explode or burn. Wide Compatibility: The solar panel chargers have a high-tech chipset inside; it can be perfectly compatible withalmostanysmartdevicewith5VUSBinput,suchassmartphones(iphone,samsung,blackberry…),5Vtablets,ipad,PSP,Bluetoothspeakers&headphones,GoogleGlass,ipoddigitalproducts,etc. Safe Protection: Over-current/over-charge/over-discharge/short-circuit protection. High effective solar panels: The solar chargers using Class A solar panels, the effective more than 17.8%. The solar panels have a long service life and no easy to broken. Slim Portable design: The solar chargers are made of waterproof cloth, small in size and light in weight,Portable and frame design fits for outdoor and indoor use. easy to use.
Vintage low output solar charger kit (probably from the 1980’s), simple board in a metal picture frame. 16 Volt 250 Ma. I checked it with a multimeter & it does put out variable voltage (depending on amount of sun). I assume it would be great for low voltage requirements, however there are no regulators other than diodes. Take a chance for a bit of technological history.
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