Battery Run-Down Protection; Accessory Power Outlet(S) - Hummer H2 2010 Owner's Manual

A high electrical load occurs when several of the
following are on, such as: headlamps, high beams, fog
lamps, rear window defogger, climate control fan at high
speed, heated seats, engine cooling fans, trailer loads,
and loads plugged into accessory power outlets.
EPM works to prevent excessive discharge of the
battery. It does this by balancing the generator's output
and the vehicle's electrical needs. It can increase
engine idle speed to generate more power, whenever
needed. It can temporarily reduce the power demands
of some accessories.
Normally, these actions occur in steps or levels, without
being noticeable. In rare cases at the highest levels of
corrective action, this action may be noticeable to the
driver. If so, a Driver Information Center (DIC) message
might be displayed, such as BATTERY SAVER
ACTIVE, BATTERY VOLTAGE LOW, or LOW
BATTERY. If this message is displayed, it is
recommended that the driver reduce the electrical loads
as much as possible. See DIC Warnings and Messages
on page 4 52.

Battery Run-Down Protection

This feature shuts off the dome lamps if they are left on
for more than 10 minutes when the ignition is in LOCK/
OFF. This helps to prevent the battery from
running down.

Accessory Power Outlet(s)

Accessory power outlets can be used to connect
auxiliary electrical equipment, such as a cellular
telephone.
The vehicle may have one outlet located inside the
storage bin below the climate control system, one outlet
inside the center floor console and two outlets on the
rear of the center floor console.
The outlet located inside the storage bin below the
climate control system can only use equipment that
does not exceed 15 amperes.
Notice: Leaving electrical equipment on for
extended periods will drain the battery. Always turn
off electrical equipment when not in use and do not
plug in equipment that exceeds the maximum
15 ampere rating.
There may also be an accessory power outlet located in
the rear of the vehicle near the liftgate. To use an
accessory power outlet, remove the protective cap.
When not in use, always cover the accessory power
outlet with the protective cap.
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