Operating instructions

20
4 • Maintenance
Chapter 4 provides information on maintaining your internal
battery, recharging options for the internal battery, and replacing
user-replaceable parts.
Routine maintenance is required to keep your Duracell
®
Powerpack Pro operating properly. Occasionally clean the exterior
of the unit with a damp cloth to remove the accumulated dust and
dirt.
WARNING: Shock hazard
Disconnect all sources of AC power and DC power
before performing any type of maintenance.
► Battery maintenance
All rechargeable batteries gradually discharge when left standing,
and you need to recharge them periodically to maintain maximum
battery capacity. The charger within the Duracell
®
Powerpack Pro
is designed to regulate the charging process, ensuring that the
battery is always fully charged but never overcharged. To ensure
safe recharging and maximum battery life, recharge the Duracell
®
Powerpack Pro only with the supplied charger or approved battery
chargers.
CAUTION
Due to inherent self-discharge, lead acid batteries must
be charged at least every 3 months, especially in a warm
environment. Leaving a battery in a discharged state, or
not recharging every 3 months, may result in permanent
battery damage and poor jump-starting performance.
CAUTION
Do not attempt to recharge the Duracell® Powerpack Pro
battery if it is frozen. Gradually warm the frozen battery
to 32 °F (0 °C) before recharging.