One option would be to pick your AC charger of choice and add an DC-AC inverter either connected via the battery or the cigarette lighter depending upon current needs. 150 watts is what I've been told is the max cigarette lighter output.

Having an inverter will give you the ability to run other things in addition to the battery charger (laptop, phone ac charger, etc).

Gives you just a little more flexibility than just having a DC battery charger and gives you more choice in battery chargers. Don't need to confine yourself to the DC chargers.