Batteries

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Batteries

The 4000 Series Loggers are powered by a single 3.6V Lithium AA cell.

 

Do NOT use a standard alkaline battery

 

Observe battery polarity - because of the low voltage the unit is not protected against a reversed battery - damage caused by this is not covered by the warranty

 

The battery voltage is indicated on the display screen but is is the nature of lithium batteries that their voltage will drop very rapidly at the end of their life. Please change it prior to a long logging session if in any doubt

 

If the device is plugged into a USB port then the battery can be changed with no interruption to the logging process but ideally it should be changed when a new logging session is started (and the internally stored Battery Changed Date updated).

 

The battery voltage is not measured when the USB is connected so the display indicator will not update immediately the battery is changed if connected to a PC