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Coin cell backup battery

Is the coin cell backup battery rechargeable?

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No the coin cell backup battery is not rechargeable. If the MobilePro 900 back up battery is low it should be replaced. The battery is a CR2032 coin-cell battery, which is very common and can be purchased at most department and drug stores. Refer to section 1-7 of the “MobilePro 900 Handheld PC’s User’s Guide” for detailed replacement instructions.

Posted on Sep 14, 2005

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PCs fail for 2 reasons, batteries bad, or HDD bad.
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Remove the two screws that hold the base cover onto the 4600. These are on the edge of the battery compartment on the side nearest the battery release latch. Press the rubber feet on the bottom of the cover towards the rear of the system to disengage the bottom door. Then remove the base cover. (See page 23 of the manual.)

Carefully disconnect the coin cell battery from the system board. There is a small white connector at the end of the wire. (The coin cell compartment is near one of the two system fans.) Pry up the current coin cell battery out of the adhesive and remove it from the computer. The connect the new battery to the coin cell compartment and reconnect the wires to the system board. See pages 49-50 in the manual. Replace the base cover and the battery.

I can't find a video for the coin cell battery replacement. However, the manual is available here: http://downloads.dell.com/manuals/all-products/esuprt_laptop/esuprt_precision_mobile/precision-m4600_service%20manual_en-us.pdf . However, the first part of the following video: http://www.dell.com/support/troubleshooting/SupportVideos/OpenSingleVideoPlayerTab?embedCode=lmczhmZTpjgWeUO_e7UOBIx5jw4zhtez . shows disconnecting the coin cell battery from the system board (when the system is completely out of the case.

I hope this helps.

Cindy Wells
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http://support.dell.com/support/edocs/systems/latd630/en/SM_EN/coincell.htm#wp1113924

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Your coin cell battery is in a bay on the bottom of your computer. Enjoy!
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exmem01.jpg 3. Use a Phillips screwdriver to remove the two screws securing the cover.
exmem02.jpg
4. Lift and remove the cover from the system.
exmem03.jpg
5. Locate the coin battery.
exmem07.jpg
6. Use a fingernail (or small flathead screwdriver, if necessary) to release the battery ZIF connector.
exmem08.jpg 7. Remove the battery from the chassis.
exmem09.jpg

8. Reverse the previous steps to replace the coin battery.
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