Battery Storage And Charging; Charging Roomba - iRobot Roomba Owner's Manual

Battery Storage and Charging

Roomba is powered by a Nickel Metal Hydride (NiMH)
rechargeable battery. Roomba's battery can last for hundreds
of cleaning cycles before a replacement is necessary.
Battery life
To extend the battery life, we recommend storing Roomba's battery in the
robot with the power supply plugged in, or with Roomba on the Home Base. If
stored correctly, Roomba's battery will take less than 3 hours to recharge.
Cleaning Time
You should fully charge Roomba's battery before each cleaning cycle. When
fully charged, Roomba will clean for up to 120 minutes on hard floors and for
slightly less time on rugs.
1 Hour refresh Charge
When charging for the first time, or if Roomba has been left off the charger
for a long time, Roomba will initiate a special 16-hour charge cycle. This
extended charge refreshes Roomba's battery and extends the life of
the battery.
TIP: For best performance, always store roomba's battery in roomba with
roomba plugged in or on the Home Base. Charge roomba's battery
overnight for the first charge.

Charging roomba

Charge Roomba in one of two ways:
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iRobot Roomba Owner's Manual
Or