iRobot Robot - Manual (Page 9)

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Battery Storage and Charging
Dirt Dog is powered by a Nickel Metal Hydride (NiMH)
rechargeable battery. Dirt Dog’s battery can last for hundreds
of cleaning cycles before a replacement is necessary.
Battery Life
To extend the battery life, we recommend storing Dirt Dog’s battery in the
robot with the power supply plugged in, or with Dirt Dog on the Home Base.
If stored correctly, Dirt Dog’s battery will take less than 3 hours to recharge.
If Dirt Dog is left off of its charger for extended periods of time, its battery life
and cleaning time will be reduced.
Cleaning Time
You should fully charge Dirt Dog’s battery before each cleaning cycle. When
fully charged, Dirt Dog will clean a maximum of 90 minutes on hard floors and
for less time on rugs. Cleaning time is dependent on battery health and floor
surface, and may vary over time.
1 Hour Refresh Charge
When charging for the first time, or if Dirt Dog has been left off the charger
for a long time, Dirt Dog will initiate a special 16-hour charge cycle. This
extended charge refreshes Dirt Dog’s battery and extends the life ofthe
battery.
TIP: For best performance, always store Dirt Dog’s battery in Dirt Dog with Dirt
Dog plugged in or on the Home Base. Charge Dirt Dog’s battery overnight
for the first charge.
Charging Dirt Dog
Charge Dirt Dog in one of two ways:
Or