Today I decided to solder small solar panels, which I will use to feed current to the QRP-Labs U3S transmitter attached to a floating balloon.

The solar cells (or solar panels, if you prefer) I used are small and very thin.

The sides measurements are 52 x 19 mm.

The electric specifications are the following:

  • Average Voltage: 0.5 Volt
  • Average Power: 0.14 Watt
  • Average Current: 0.28 Ampere
  • Efficiency: 17.4 %

You can buy these cells on ebay for a reasonable price of about $18 (€16) for 100 pieces, including shipping costs. The price may vary.

Roberto Pietrafesa (IZ7VHF)

Monteiasi, Italy, May 31 2017.