GDD Instrumentation MPP-EM2S Plus Instruction Manual page 4

Battery Discharge
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*** It is recommended to put the Archer field computer on charge when not in use to avoid
discharge of the battery.
*** For the probe, when the level of the AA batteries charge is low, the value of the readings could
be inaccurate and you could not be able to initialize the probe.
The specifications described in this Instructions Manual is valid at temperatures between 0°C and
70°C. At temperatures lower than 0°C, some specifications, like the batteries life, could be different.
Instrumentation GDD Inc. 2018-01-16 3