The design is now mature, and the High Efficiency MPPT Solar Charger is full of features like data logging, boasts a 97% efficiency over a range of 1 to 75 Watts, and can be used as a standalone ...
Right now, the power bank is 83 per cent off, coming in at just $50. That means shoppers can save a whopping $250 on this massive deal. The reviews quoted above reflect the most recent versions at the ...