Battery Replacement

 

oops

link was for wrong model

Amazon and YouTube

I'm not familiar with the particular model, but I've had to replace the battery for my 750 once. I got a kit from Amazon which included the battery and a prying tool (essentially a small flathead screw driver).

It also had an instruction DVD, but I didn't bother with it, since there were plenty of instructions available on YouTube.

I just Googled. A replacement battery for a 2797 is available on Amazon, though without a "prying tool." I didn't see an instruction for your particular model, but other Garmin battery replacement I saw seemed similar to 750. I'd guess the process is common to all Garmin models.

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nüvi 750 & 760

Website

Haven't had to replace my Garmin battery yet, but when I do I'm going to try NewPower99.com. They have good YouTube videos and include the tools you need - including the pry tool someone above mentioned.

They have a kit for the 2797, here's the page:
http://www.newpower99.com/Battery_for_Garmin_Nuvi_2797_p/gar...

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Garmin 50LM

Batteries Plus will do it for $15 + cost of battery

Local will do it on spot while you wait, might want to check your local and see if they do it.