BTK1 Battery Replacement Tool Kit, Rev G Page 2 of 7
5. The board should now be loose within the housing. Gently tap the housing and slide the circuit
board and battery out of the logger.
6. Disconnect the old battery by gently pulling on the battery leads. You may need to use a pair of
pliers to gently rock the plug back and forth.
7. Inspect the desiccant. Replace or refresh the
desiccant if not bright blue. To refresh desiccant,
warm it with an electric toaster oven or hot plate
at 100 C (210 F) for 20-30 minutes. Alternatively,
microwave it for a few seconds at a time until it is
bright blue.
The following instructions apply only to loggers with
serial numbers not between 2004043-2004058, and
lower than 2006000. If your logger is a newer model,
proceed to Step 19: Newer Models. Note: you can
identify a newer model visually as well. Instead of two desiccant packs, it will have one, and it
has a large blue capacitor on the opposite side of the circuit board (see step 19).
8. The logger must completely power down for a clean restart. Wait at least 3 minutes between
disconnecting the old battery and reconnecting the new battery for the on-board capacitors to
discharge.
9. Connect the new battery by gently pushing the polarized connector into the battery socket.
Verify that the green and red LED’s flash three times. If not, disconnect the battery, wait 3
minutes and repeat.
10. Carefully slide the battery, circuit board holder, desiccant and circuit board back into the logger
housing. It may take a couple of attempts to get the hang of it. Do not use force. Gently push
the board all the way into the housing using the Circuit Board Holding Tool.
11. Use the hex driver to tighten the hex screws. Alternate sides and do not over torque. (Use four
fingers, not your whole arm!)