Lanier 2001 - Manual (Page 167)

Environmental Specifications
Specifications 8 - 7
Environmental Specifications
Lithium Battery Statement
Lithium batteries have a danger of explosion. Replace the battery only with the type
recommended by the manufacture.
Temperature
10 - 33 0 C (50 - 95 0 F)
Relative Humidity (RH) Minimum 15%
Maximum 85% non-condensing
Operating Altitude Maximum: 2500 meters (8020 feet) or below