Tascam CA-XLR2d Reference Manual page 9

Using AA batteries
Install 2 AA batteries in the included battery holder, and attach
it to the unit.
1.
Slide the cover from the battery holder (f) to remove it.
Install 2 AA batteries with their ¥ and ^ marks as shown
in the holder. Then reattach the cover.
2.
Remove the battery holder connector cover.
3.
Remove the bottom connector cover from the unit and
attach the battery holder to the unit.
ATTENTION
If the BATTERY POWERED switch (g) on the battery holder
was set to "ON" when it was connected to the unit, the switch
must be set to "OFF" once and then back to "ON" in order to
use battery power.
3 – Preparation
4.
Set the battery type switch (h) according to the type of
batteries being used.
5.
Set the BATTERY POWERED switch (g) to "ON" to supply
power from the batteries.
ATTENTION
i Manganese dry cell batteries cannot be used with this unit.
i This unit cannot recharge Ni-MH batteries. Use a
commercially available recharger.
i When not using the battery holder, attach the bottom
connector cover to the unit. Using without this cover could
result in this unit malfunctioning due to the ingress of foreign
matter or connector damage, for example.
NOTE
A great amount of power is required to provide phantom
power to condenser mics. If condenser mics are used while
powering the unit with AA batteries, operation time will be
shortened due to mic power consumption.
9
TASCAM CA-XLR2d