The solar battery can contribute something like 15 mA to the overall power. This means the receiver only needs to draw 30 mA from the rechargeable battery, and can therefore theoretically run for 30 hours, assuming the sun is shining all the time, day and night. Hum, something’s not sound here… If I just knew what … 😉
This also means that if you want to run your receiver exclusively from the solar battery then you can use it only one third of the time it is exposed to the sunlight. To completely recharge an empty receiver with just the solar battery takes 60 hours – five days if you assume 12 hours of sunshine each day and the receiver always being in optimal reception. This is highly unlikely, so don’t throw that USB charging cable away just yet”…. <More>
