We bought a Renogy 200watt Eclipse solar kit for our suitcase to limit the use of our generator when camping. This device was so efficient that it could fully charge our lead-acid batteries in about an hour with two computers and a large monitor powered by an inverter and phones charged. We chose 200W instead of 100W to provide enough power for the fans that can draw battery power. Constantly put out about 12 amps. We also bought 20ft extensions to fit either side of the rig. The controls are very easy to use.