Replacing The Internal Battery - Campbell CR300 Series Product Manual

Time. Clock will need resetting when the battery is replaced.
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A replacement lithium battery can be purchased from Campbell Scientific or another supplier.
3 V coin cell CR2016 for battery-backed clock. 6-year life with no external power source.
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See Power requirements
WARNING:
Misuse or improper installation of the internal lithium battery can cause severe injury. Fire,
explosion, and severe burns can result. Do not recharge, disassemble, heat above 100 °C (212
°F), solder directly to the cell, incinerate, or expose contents to water. Dispose of spent
lithium batteries properly.
NOTE:
The Status field Battery value and the destination variable from the
(often called batt_volt) in the Public table reference the external battery voltage.

16.4.1 Replacing the internal battery

It is recommended that you send the data logger in for scheduled calibration, which includes
internal battery replacement (see
WARNING:
Any damage made to the data logger during user replacement of the internal battery is not
covered under warranty.
1. Loosen or remove the screws from the sides of the data logger.
2. Pull the bottom and top of the data logger apart.
3. Carefully pinch each of the four plastic pins and pull the top circuit board away from the
mounts and connector. A wire connects the board, do not pull the board too far and
damage the wire connection.
4. Remove the lithium battery by gently prying it out with a small flat-bladed screwdriver.
5. Install new battery.
6. Reassemble the data logger. Take particular care to ensure the board is reseated tightly
onto the plastic pins and connector.
(p. 184) for more information.
Data logger calibration
Battery()
(p. 103)).
16. CR300 series maintenance
instruction
110