McLane Research Laboratories Mark 78H-21, User Manual

Page: 84 / 168

6-10
Battery Maintenance
Using fresh Duracell batteries for each deployment is strongly recommended (a new battery pack
has a
5,000 mAh
r capacity). Before replacing the batteries, offload all data. Disconnecting the
battery erases all deployment data stored in memory.
Figure 6.2-9: Controller End Cap Attached to Battery Holder
Battery Installation
Selecting <2> Diagnostics from the Main Menu displays battery voltage. Batteries with less than
18 V should be replaced before the next deployment (battery packs below 18 V trigger a warning
message and voltage below 12 V triggers a critically low battery voltage message). For details
about diagnostics and battery voltage messages, see Chapter 3 in this User Manual.
When the Compass/Tilt sensor is installed, you must degausse new batteries before placing in the
battery holder.