Maintenance
FTB-2/FTB-2 Pro and FTB-4 Pro 297
Recharging the Batteries
To recharge the batteries:
For the FTB-2 and FTB-2 Pro units: Connect the unit to a power outlet
using the AC adapter/charger.
For the FTB-4 Pro units: Connect the unit to a power outlet with the
standard three-wire power cord.
The charge cycle will start and end automatically.
IMPORTANT
Remove the batteries if the unit will not be used for more than
two weeks.For more information on how to remove the battery,
see Replacing Batteries on page 303.
If you need to store the batteries for an extended period of
time, place them in a cool dry place, and ensure that they are
charged at around 80 % of their capacity. Every three months
during the storage period, verify the battery level. Recharge the
batteries when necessary, so that their charge level remains
around 80 % of the total capacity. This will ensure that you get
the optimum performance out of the batteries.
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