PV Gap

John Said:

how many watt hours does 24 red leds use at 12v?

We Answered:

Take your two leads from your trailer lights and use a cheap multimeter with an ohm meter on it and measure the ohms of resistance thru your 24 LED's.

Let's say for example you get 3 ohm's of resistance you get in the circuit ( no battery or solar charger hooked in the circuit..this is just plain resistance of your wires and leds)

The formula for this is voltage = current in amps * resistance in ohms

In this example of 3 ohms resistance:
12V = amps * 3 ohm
amps = 4 amps

watts = volts * amps
watts = 12V * 4 amp = 48 watt panel required for this resistance

Kimberly Said:

How can I explain to my aunt that this particular thing isn't worth the effort or money to help the planet?

We Answered:

it's a scam site. The panel and wind turbine together wouldn't run a PC let alone anything in your house. In my area, solar panels have a 15 year payback time and wind a 18 year payback.

The site doesn't give any facts, only testimonials, that's how you know its a scam. Have her write them for facts, like how many watts the things are rated for and what is the warranty period. That will shut up scammers in an instant.