I've been considering putting a deep cycle marine battery in the trunk of my CD with a power inverter and a timer to hook up the block heater.

I'm thinking this could allow a 1-2 hour preheat with the block heater before my wife leaves work. With the temps getting lower I want to make her diesel experience as easy as possible.

I'd put the battery on a charger overnight when she got home so the battery would be fully charged for the end of the next work day.

Any reason this wouldn't work? What would be the best power inverter to use? What deep cycle battery would you recommend?

__________________
Chad
2013 Jeep Unlimited Rubicon
OBK#44
"Pleasure in the job puts perfection in the work." - Aristotle (384-322 B.C.)

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1985 300TD - Red Dragon
1986 300SDL - Coda
1991 - 300TE
1995 - E320
1985 300CD - Gladys
2006 Nissan Pathfinder LE
1998 Acura 3.0 CL