ef ecoflow efdelta solar generator 1260wh with 160w solar panel, 6 x 1800w (3300w surge) ac outlets, portable power station for outdoors camping rv high-power appliances emergency ef ecoflow faq 1. what are the best operating conditions for the ecoflow 160w solar panel? in order to increase the efficiency of the ecoflow 160w solar panel, use it in direct sunlight, position it perpendicular to the sunlight, and make sure the solar panels are unobstructed. 2. can i use the ecoflow 160w solar panel indoors or inside a car? yes, you can use the ecoflow 160w solar panel indoors or inside a car, but doing so will affect the charging efficiency because the sunlight will have to pass through glass or other surfaces first. 3. how many ecoflow 160w solar panels can i connect to delta? you can connect one ecoflow 160w solar panel with delta using the mc4 to xt60 solar charging cable. 4. what devices can delta power? the 6 ac outputs can power any tools and devices less than 1800 watts (surge to 3300w).