What is the difference between a 6v 80mA solar cell and a 6v 830mA solar cell?

What is the difference between a 6v 80mA solar cell and a 6v 830mA solar cell?I am trying to make a solar phone charger and need to know. Thanks!

seandogue1 year ago

0.75 Coulombs per second if my conversion was correct. Or 750 mCoulombs/sec if you prefer.

Presuming full sunlight (panel operating at full efficiency), the 80mA panel outputs 80mA , or less than a tenth of an amp (continuously, not every hour), whereas the 830mA panel outputs nearly an amp.

Due to the vast difference in current output at optimal conditions, the 830mA panel is probably much larger dimensionally as well.

For reference, I have an old (circa 90s) panel that came with an emergency all band radio (meant to charge a quad of NiMH batteries) that outputs ~350mA and is ~8"x10"

LiveSparks1 year ago

Here's the simplest answer. Both of these solar cells provide 6V but the 80mA one gives 80 milli Amperes in one hour whereas the 830mA one gives out 830 milli Amperes in one hour. Milli Ampere is the meature of current the solar cell provides. If you wish to charge a mobile phone using a car socket charger then you should connect two 830mA solar cells in series (negative of one to the positive of other) and the adapter will automatically bring down the voltage the amount required. But a simpler and cheaper way would be to use only one 6V 830mA solar cell connected directly to your phone via a small value resistor.

iceng1 year ago

The obvious difference is most probably the light capturing silicone area is larger. It could also include reflectors to direct more light to the solar array then direct sun light could provide..

There are super tech arrays that are two cells in the same space one is a visible cell and the other is an IR ( InfraRed ) cell which together are wired to double the current and probably triple the price.

The 830ma solar array can deliver more current to charge a battery faster or run an electronic device that could not successfully function on only 80ma..

So, if you can handle the larger cell size the 830ma is a better power deeal for your charger.

One delivers 10X more power than the other.