The weather station uses alkaline batteries because of their wide temperature range.  However, any AA battery will work in the unit, including non-rechargeable batteries.

They are available on our website here:

However, we now recommend non-rechargeable Energizer Lithium Ultimate batteries over rechargeable batteries:

They operate between -40 °F and 140 °F (-40 to 60 °C).  They will not damage the weather station or the batteries because of the low charging current.

Using Ni-Mh or Ni-Cad rechargables are fine but expect a very limited temperature operating range.

Our newest sensor array (WS-1002-ARRAY) :

uses a super capacitor as the energy storage device, and back up non-rechageable Lithium batteries. It is a better design because of the limited life of rechargeable batteries.

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