How long does a 6182 or 17894 last after a full charge?

This depends on the current drain of the system. In general, the battery can be made to last longer by following these steps:

  1. Just before measuring the high-current sensors, slow down the scan interval of the data logger program and switch on the sensors.
  2. Just after the sensors stabilize, take the measurements.
  3. Turn the sensors off immediately.

Communication can also greatly affect the battery charge. Turn off any communications devices as much as possible to delay the battery discharge. 

Adding a solar panel and working out a power budget can balance out the charge with the discharge so that the system can be stable indefinitely. For more information, see the “Power Supplies” application note.

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