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"The underhood outlet is powered at all
times. The vehicle battery may run down if
the power outlet is used while the ignition
is off. Use this power outlet for plugging in
a GM Approved battery maintainer,
if equipped."
But I'm confused. if you plug in the battery maintainer here, are they saying this will charge the battery rather than hooking up directly to the battery? If so, that's nice. I ordered the battery maintainer with my car (don't have the car yet).
The outlet in the frunk is where you plug in your battery maintainer. You don't need to hook the maintainer directly to the battery. In fact, if hooking "directly" to the battery you need to make sure that you don't bypass the battery state of charge sensor.
The outlet in the frunk is where you plug in your battery maintainer. You don't need to hook the maintainer directly to the battery. In fact, if hooking "directly" to the battery you need to make sure that you don't bypass the battery state of charge sensor.