Use coupon code BWL3X to save $24.60
This is the most powerful solar charger in Blitzwolf range. It’s capable of delivering 3.8A of current (it full sun) which is enough to charge at full speed two high power devices (high-end smartphones or tablets). Even smaller Blitzwolf panels can charge smartphones in cloudy day so this should easily power more demanding tablets. Solar cells from SunPower provide unsurpassed conversion efficiency over 23.5%
Blitzwolf chargers offer best value/cost ratio on the market at the moment and quality is very good. Lower powered BlitzWolf® 15W 2A BW-L2 and BlitzWolf® 20W 3A BW-L1 versions have many reviews, 28W is quite recent.