Eu3000 charging time = Don't know exactly but I was running it for three to four hrs. After four days batteries were around 12.2v. I am very frugal with power usage at this time. All lights are led. Other than radio very few other power hogs. I am currently installing a Victron DMV-700 monitor to better understand the battery state and consumption rate. We would like to be able to watch Sat. TV and radio in the future, wife would like to run blowdryer. I have also "read" a couple of articles (handybob's) and others that have been able to determine that even a small shadow can reduce a panel's efficiency by 25% or more. I, as well as several friends are very accomplished diyer's so the install would not be an issue. The portable idea is good but I rather reduce the amount of "work" necessary to get powered up each time we move. Again I appreciate all the input!