Q: How do I change the internal AA time code/time-of-day battery on a 7-Series recorder?
A: Changing the internal AA battery is a simple process outlined here in a step by procedure:
Obtain the correct battery: A rechargeable AA battery with NiMH chemistry.
Only use a rechargeable, NiMH AA battery for replacement. The 7-Series TOD battery is in a charging circuit. Using a non-rechargeable battery can cause the battery to rupture causing damage to the recorder.
Place recorder upside down on a steady flat surface.
With a Phillips head screwdriver remove the screws on top.
Remove and Install screws in this order to avoid stripping.
Gently remove the bottom panel. As you remove the bottom panel be carefull of the internal AA battery wires as they will remain connected to the internal circuitry and the bottom panel.
Using a screwdriver, loosen the green battery retainer board and twist it away from the battery holder. Remove the used battery and replace it with a fresh one. Twist the battery retainer board back into place and tighten the screw.
Replace the bottom panel, making sure the tabs around the perimeter line up and hold with one hand while replacing the screws. Tighten the screws down making sure they are flush with the unit.
Give the unit a final looking over to make sure everything is aligned properly.