Do sw airline planes have electrical plugs or cigarette lighter plugs?

i would like to take my laptop or my portable dvd player to entertain myself but the battery wont last that long. HELP!!!!!Do sw airline planes have electrical plugs or cigarette lighter plugs?
for a low-cost airline, i highly doubt it... SWA has no 1st. class so its all economy.. i have also taken SWA and haven't seen such equipment on board. its usually found upon long-haulers such as the jumbo jet.
I recently took SW from Philly to LV and the aircraft are not equipped with type of electrical port.Do sw airline planes have electrical plugs or cigarette lighter plugs?
No, usually only long-haul airliners are equipped with power ports.