Instructions

UM-0085-B09 DT80 Range User Manual Page 284
RG
7. Disconnect the battery terminals
(models with internal battery only)
8. Remove screws on bottom of logger. DT80/81/82 models have two screws,
DT85 models have three.
9. Remove the battery cage
(models with internal battery only)
10. Carefully slide the circuit board bundle partially out of the case. Be careful of
the flexible cable running between the top circuit board and the keypad. Do
not completely remove the circuit boards from the case.
For models with integrated modem, remove the modem module from the
logger case but leave its cables connected.
Note: Before touching the circuit boards, discharge any static electricity that may be
present on your body by touching a grounded metal surface or wearing an anti-static
wrist strap.
11. Open the boards slightly so the lithium battery can be removed.
Figure 116: How to remove the lithium battery
Warning1: When installing the new lithium battery, observe the correct polarity, as marked on the printed circuit board.
Warning2: Any replacement battery must be identical in specification to the factory fitted battery. There is a risk of explosion if the
battery is replaced by an incorrect type.
Warning3: Dispose of used batteries via an appropriate recycling facility only.
Warning4: When reconnecting the main battery (if fitted), observe the correct polarity. The red plug connects to the positive (+) battery
terminal.
Warning5: When reinserting the main battery, ensure that the battery is oriented so that battery terminals are closest to the upper side
of the battery. If the battery is inserted upside down then the terminals may contact the case, causing a risk of a short circuit.