Introduction

If the vacuum cleaner only runs for a short time, the batteries are exhausted. The batteries are readily available, but you need to be good at soldering to replace them.

You will need three 18650 batteries with U-shaped soldering tabs and a voltage of 3.7 volts.

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    • Remove all attachments, leaving only the base unit.

    • Unscrew the five Phillips screws.

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    • You have to disassemble the device into two halves. To do this, cut the sticker at the seam with a sharp tool.

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    • Take a plastic lever tool and carefully split the device into two halves. It probably is stuck a little.

    • Now is a good time to give the inside of the appliance a good clean, especially all the foam filters.

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    • The batteries - shown here in green - are easy to see. They are held in the device by rubber buffers.

    • You need three 18650 batteries with U-shaped solder tabs. The higher the capacity, the longer you can vacuum. Use types with a nominal voltage of 3.7 V and a charging voltage of 4.1 V.

    • To be on the safe side, measure the voltage of each cell. They should all be the same.

    Wäre gut max. Kapatität und max. Entladestrom des Akku anzugeben. DANKE

    Michael -

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    • Carefully lift out the batteries. A fuse and a thermal sensor are glued to the first and third battery.

    • Remove the adhesive tapes and carefully push the fuse and the thermal sensor to the side.

    • In the third picture you can see the thermal sensor. Note how it is guided through a groove in the rubber buffer and rests against the battery.

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    • All solder joints are secured with heat-shrink tubing. Cut all heat-shrink tubing with a sharp tool and remove it.

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    • Now comes the main work: soldering. Get some wide heat-shrink tubing that fits over the soldering tabs.

    • Desolder the old batteries piece by piece - you can also pinch off the cables - and solder them to the new batteries in the same way:

    • Slide on suitable pieces of heat-shrink tubing before soldering.

    • Pay very close attention to the polarity of the batteries. If you make a mistake here, nothing will work!

    • Heat the heat-shrink tubing until it tightens against the soldering tabs.

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    • Tape the fuse and the heat sensor in place with insulating tape.

    • Insert the batteries.

    • Check the polarity of the batteries once more.

    • Minus

    • Plus

    • Switch on the device for testing.

Conclusion

Work through the steps in reverse order to reassemble your device.

VauWeh

Member since: 19/10/15

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