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Garmin Nuvi 255W Battery Replacement

Introduction

Use this guide to replace the battery in the Garmin Nuvi 255W.

What you need

  1. Garmin Nuvi 255W Battery Replacement, Power Button: step 1, image 1 of 1

    • Remove the barcode sticker at the bottom of the device.

    Edit

  2. Garmin Nuvi 255W Battery Replacement: step 2, image 1 of 1

    • Remove two 8.4 mm T5 screws from the bottom of the device.

    Edit

  3. Garmin Nuvi 255W Battery Replacement: step 3, image 1 of 2 Garmin Nuvi 255W Battery Replacement: step 3, image 2 of 2

    • Using a plastic opening tool, carefully pry open the device.

    • Open the device carefully, making sure not to damage the gold ribbon cable that connects the screen to the motherboard.

    Edit

  5. Garmin Nuvi 255W Battery Replacement: step 4, image 1 of 2 Garmin Nuvi 255W Battery Replacement: step 4, image 2 of 2

    • Remove the power button.

    Edit

  6. Garmin Nuvi 255W Battery Replacement, Battery: step 5, image 1 of 1

    • Unscrew the four 6.70 mm screws holding the motherboard in place using a philips #0 screw driver.

    Edit

  7. Garmin Nuvi 255W Battery Replacement: step 6, image 1 of 2 Garmin Nuvi 255W Battery Replacement: step 6, image 2 of 2

    • Lift up the motherboard.

    • Carefully disconnect the battery and motherboard. Slowly wiggling the connection makes it easier to disconnect the battery from the motherboard.

    Edit

  8. Garmin Nuvi 255W Battery Replacement: step 7, image 1 of 2 Garmin Nuvi 255W Battery Replacement: step 7, image 2 of 2

    • Using the plastic opening tool as a wedge, pry the battery from the case. This can be fairly tough as the battery is glued to the case. Don't be afraid to use force and some good leverage.

    Edit
Conclusion

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

15 other people completed this guide.

Author

with 5 other contributors

Timothy

Member since: 01/26/12

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Team

Cal Poly, Team 9-3, Regan Winter 2012 Member of Cal Poly, Team 9-3, Regan Winter 2012

CPSU-REGAN-W12S9G3

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4 Guides authored

9 Comments

Thanks for this very nicely illustrated guide.

RBStorms - Reply

Thanks for the guide. Used it to open up a Nuvi 265 because the battery had been left to discharge below the protection circuit's limit. Connected the battery leads (Green = ground, Red = voltage, Black = temperature) to a 5v USB charger for ~20 seconds to revive the protection circuit, and the unit is now charging again. If you're going to do this, know the risks. Thermal runaways in lithium batteries can be extremely volatile.

rbol - Reply

Used these instructions to replace battery in my 5-year old Garmin nuvi 205W (which has the same access and internal geometry).

JRedmond - Reply

Thanks, great demonstration.

peter2x4 - Reply

This is great! I have run into a big problem, though. One of the screws is "unthreaded." The head has become smooth, and I can't unscrew it to get the cover off. Is there any way to get it off???

nancyw - Reply

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