Introduction

The following guide covers how to replace the 3.7 V lithium-ion battery in the Digitac Jazz Ultratab C725. The battery removal procedure for this device requires the proper use of a soldering iron. If you are unfamiliar with soldering, we recommend that you check out this soldering guide.

Locate the four 3.5 mm Philips head screws. There are two screws on top and 2 screws on the bottom. Remove four screws with the Phillips #00 screwdriver. Avoid damage to the threads by  removing the screws with the least amount of force possible. Damaging could make it difficult to remove the screw.
  • Locate the four 3.5 mm Philips head screws. There are two screws on top and 2 screws on the bottom.

  • Remove four screws with the Phillips #00 screwdriver.

  • Avoid damage to the threads by removing the screws with the least amount of force possible. Damaging could make it difficult to remove the screw.

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Flip your device so that the long side without the buttons is facing you. Insert the plastic opening tool between the silver back plate and the screen. From the corner of the device on either side, pry the seam of the device about 1 inch. With the plastic opening tool, pry the screen apart from the back plate.
  • Flip your device so that the long side without the buttons is facing you.

  • Insert the plastic opening tool between the silver back plate and the screen. From the corner of the device on either side, pry the seam of the device about 1 inch.

    • With the plastic opening tool, pry the screen apart from the back plate.

    • Keep prying the screen apart from the back plate until they are separated.

    • With the plastic opening tool, if necessary, pry part the remaining seams of the device.

  • After the screen is loose, pull the screen towards you. Lift it to prevent damage to the buttons.

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Use a soldering iron to melt the solder that connects the battery wires to the motherboard. Pull the wires once the solder is melted.
  • Use a soldering iron to melt the solder that connects the battery wires to the motherboard.

  • Pull the wires once the solder is melted.

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Peel up one of the long edges of the battery. With the flat side of the Spudger insert it underneath the battery. Weaken the strength of the adhesive  by sweeping back and forth along the battery.
  • Peel up one of the long edges of the battery.

  • With the flat side of the Spudger insert it underneath the battery.

  • Weaken the strength of the adhesive by sweeping back and forth along the battery.

  • Pull the battery out of the device once it is loose.

  • A damaged battery is a fire hazard. Avoid damaging the battery at all costs.

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Conclusion

To reassemble your device, follow these instructions in reverse order.

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Seth York

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