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| Below is help and answers to questions regarding Davis Weather Wizard III. If you have any other questions please email us by clicking on the link provided. |  |
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 | The 9-volt backup battery is meant as just that, a backup. A new 9-volt battery will last approximately one day of continuous use. You can replace the 9-volt battery with six or eight D-cell batteries wired in series (9v or 12v) to increase backup longevity. Simply buy D-cell battery holders; wire them in series; attach a 9- volt snap connector and plug it onto the existing 9-volt snap connector of the weather station. Make sure you get the polarity correct. The two snap connectors in combination will reverse the red and black wires. You may also use a DC source for primary power. Instead of using the AC adapter you can use a 12-volt DC source such as a car battery or a motorcycle gel cell. To do this you will have to cut off the transformer of the AC adapter. That’s the heavy black cube that plugs into the wall. The remaining wires will be attached directly to the battery terminals. The wire with the white stripe is positive. You may also purchase the Davis Solar Power Kit DAV-7708. This system powers any of our weather stations using energy from the sun. One hour of bright sunlight will supply sufficient energy to run the station for sixteen hours in total darkness. The regulator circuit varies the charging voltage as a function of temperature for maximum efficiency and prevents reverse current flow and deepdischarge of the battery.  |
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