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Tempest Weather Station replacement battery replacement
RepairDad and one other contributor
Last updated on Sep 2, 2026
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Introduction
Go to step 1 ↓This guide shows the replacement of the LTO (Lithium-Titanium-Oxide) replacement battery of a Tempest Weather Station WF-TWS01.
The required spare part is not very easy to obtain (LTO replacement battery 2.4V, 18650 format, min. 1300mAh or higher).
You should avoid using a standard Li-ion battery, as these are not designed for the wide temperature range.
What you need
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Turn off the weather station and completely remove the 4 Phillips screws. Then, carefully lift out the bottom part using a flathead screwdriver.
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After carefully pulling the PCB out, completely release the 3 Phillips screws.
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Note the polarity with which the replacement battery is soldered onto the PCB (or take a photo).
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Before you begin desoldering, use a tissue and tweezers to remove the dielectric grease from the solder joints of the replacement battery on the underside.
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Now desolder the replacement battery from the underside; it is highly recommended to use a solder pump and subsequently desoldering wick for this.
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Save the rubber spacer that was mounted under the old battery and slide it onto the battery tabs of the new replacement battery.
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Place the replacement battery with the rubber spacer onto the circuit board, ensuring the correct polarity, and then solder it in place.
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Trim the solder tabs to approximately 2 mm from the circuit board, then apply a small amount of fresh solder to the cut ends of the tabs to prevent corrosion.
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Optional, but highly recommended to prevent corrosion: apply some dielectric grease to the solder joints of the newly soldered replacement battery.
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Work through the steps in reverse order to reassemble your device.
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