4.6L, 5.4L, 6.8L engine
WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
A primary 72 ampere-hour, maintenance-free battery, mounted in the forward right-hand side of the engine compartment, is standard.
The primary battery system consists of the following components:
- primary battery
- battery cables
- primary battery case
The auxiliary battery option includes a remotely packaged auxiliary 75 ampere-hour, serviceable, deep cycle battery. The auxiliary battery is located on the right-hand frame rail to the rear of the B-pillar. The auxiliary battery is used to supply the trailer circuits with power when the vehicle is not running. The auxiliary battery is connected in parallel with the primary battery through the auxiliary battery relay when the engine is running. The auxiliary battery uses the same primary cable as the primary battery.