Battery "Upgrade" for nuvi 750 (possible?)

I do know from other posters on these forums there are lower priced batteries available with tools to help you crack the case. A little searching through the forums would probably provide the answers you are requesting.

They do look like they are the same. You should take your old battery out and take it with you and compare. Pay special attention to the connector. If the 1500 battery isn't identical, then buy the 1250 model.

There is something a little fishy, though. The 1250 battery is $40 and the 1500 battery is $22. It should be the other way around, don't you think?

I, and others here, have had good success with batteries from eBay. I got a replacement for my 760 battery (same as for the 750) with a set of torx tools and a plastic case opener for around $15 or so.

This YouTube video shows you how to replace the 760 battery. The 760 is identical to the 750.
http://www.youtube.com/watch?v=qXXzsi9Ures

Go with the Dantona 3.7V/1500mAh GPS Battery for Garmin Nuvi
Model: PDA-209LI | Catalog #: 55026654

Higher mAh, 1500 vs. 1200.

My question(s) revolve not around the physical act of replacing my battery, but replacing my battery with one of a greater storage capacity (longer life).

I, too, think it odd that the "larger" battery costs less--but it is an additional real factor that makes me want to try it.

I need to find a close, local Radio Shack to visit to perform the comparison. If I can do this soon, I will post results here. 1500mAH would be a nice step up from 1250mAh. I wonder what that would translate to in running time. . .

-p

Just went to Battery Ship and they state the 1500 MA is a Nuvi 600 series replacement.

http://www.batteryship.com/htmlos/htmlos.cgi/batteryship/cat...

Of course they don't give the physical dimensions for any of their batteries, but the 1250 MA for the 750 is $17.95 with tools.

http://www.batteryship.com/htmlos/htmlos.cgi/batteryship/cat...

The higher capacity battery may be like trying to put 5 pounds of fertilizer into a 4 1/2 pound sack - it would almost fit.

are different than fertilizer.

It is possible to "upgrade" laptop batteries and cordless phone batteries to higher mAh components that are either the same size or slightly larger. Frequently, these upgrades are of the same size as the original (smaller capacity) mAh battery.

I oughta requisition the funds from my better half to order both. =) If I can order both, I will find out if I can squeeze the 1500mAh battery into the space within my 750.

Which is why I stated the site didn't provide dimensions. If they are the same size - thickness to me would be the most telling, go for it.

To replace battery for NUVI by yourself is comparison to spend $20 versus approx. $100 what Garmin charges...unless it is still under waranty. I would take a chance with 1500 MA, only if I couldn't get the proper 1250 and then I would verify physical size, type of connector and proper polarity of the connector.

As others have said, if the connector and battery size are the same, go for it with the higher capacity battery.

this kind of thing has been going on for years in rebuilding battery packs for ham radios as well as other devices like iPods.

Some times it's just a difference in how battery manufacturers rate their batteries. Other times, there's a noticeable difference -- the replacement batteries I put in our last-generation iPods had a good deal more capacity than the originals.