2. Precautions 
•  DANGER: Fire, explosion, and severe-burn hazard. Misuse or improper 
installation of the internal lithium battery can cause severe injury. 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. 
•  WARNING: 
o  Protect from over-voltage 
o  Protect from water 
o  Protect from ESD
 (p. 97)   
•  IMPORTANT: Note the following about the internal battery: 
o  When primary power is continuously connected to the CR800, the 
battery will last up to 10 years or more. 
o  When primary power is NOT connected to the CR800, the battery 
will last about three years. 
o   
o  See section Internal Battery — Details
 (p. 457) for more information. 
•  IMPORTANT: Maintain a level of calibration appropriate to the 
application. Campbell Scientific recommends factory recalibration of the 
CR800 every three years.