EXFO FTB-1 - Manual (Page 18)

Introducing the FTB-1
8 FTB-1
Power Sources
Power Sources
Your unit operates with the following power sources:

AC adapter/charger (connected to standard power outlet—indoor use
only). Compatible car outlet adapter available upon request.

One lithium-ion rechargeable battery (automatically takes over if you
disconnect the AC adapter/charger).
Note: When it is connected with the AC adapter/charger, the unit will function
even if the battery is not present.

Possible to switch from AC adapter/charger to battery power or
vice versa without affecting operation.

The battery recharges automatically when the AC adapter/charger
is connected.

The battery is offered in two formats: four-cell (small) and
eight-cell (large).

Rechargeable battery (for clock). This battery can keep the date and
time for weeks even if AC power and the lithium-ion battery (main
battery) are not connected.
Optional Software Package
An optional software package (IPT package) is offered with the
application. With this package, you can perform ping and trace route tests.
For more information on how to activate software options, see Activating
Software Options on page 42.