I would appreciate any information regarding optimising the battery life in a Nuvi 760.
If used in pedestrian mode, battery life is very short - pathetic really.
To get most of your battery life you must discharge it completely few times than charge it again.
Leave it running for a few hours until it's dead then plug in to the USB and leave it overnight.
Max you can get from this battery it about 4 hours.
I don't think this unit was designed to be used for the pedestrian mode.
The battery will last approx. 3 to 4 hours if fully charged. As per previously mentioned, make sure you fully discharge occasionally, even though the newer battery supposedly doesn't have a memory problem.
Garmin doesn't really discuss battery life up front, but it varies widely with the model. And older 2.xx can have four hours of battery life in "pedestrian" mode, while a new 765W will have less than an hour.
Apparently Garmin has no standards for battery life, so when they take a standard model and a standard battery, and then add in "more stuff" like Bluetooth (add a module that takes up space inside the case) and FM (add another module) their solution is to just stick in a smaller battery and not tell anyone about it.
Very disappointed that my fancy new Nuvi has only 1/4 the battery life of my old plain one. If I sit down to program in a few new locations and routes, I can pretty much wind up killing the battery--even with all the fancy options turned off.
All you can do is turn off any options (Bluetooth, FM, etc.) that consume power, and dim the screen. In sunlight dimming the screen may not be feasible, so you're just stuck with low battery life. Nuvis just really aren't meant for use without a vehicle (or computer) attached to them.
The GPS units we are discussing here in the main are for vehicle use, where there is a power supply. If I was wishing to use a GPS for walking around I would purchase a unit made for that situation. Example, the hand held units for bushwalking are useless for using in automobiles, and the vehicle units have shorter battery life as they are not designed for walking around for hours, but, have many more features that are used in vehicles.
1. Lower screen brightness
2. Disable bluetooth if not in use
3. Disable GPS signals if not using GPS functionality
4. Lower volume to the bare minimum required
5. Completely charged (undisturbed) and discharge once a month
6. Avoid unnecessary frequent on-offs
Garmin claims battery lasts around 7 years, but I know that folks have reported their nuvi batteries having trouble holding charge after 4+ years.
Garmin is presently undertaking a recall of models such as the Garmin Nuvi 760 because of battery issues. You should log on and check whether your GPS (serial number is required) is affected. Garmin will replace an affected battery free of charge.
Dont expect long battery life after the first year. The battery looses a lot of its capacity after a year and it keeps decreasing the more it is cycled. My garmin after three years was down to 1/2 hour and now after five years 10-15 minutes max. Li-Po and L-Ion batteries are good for about 1000 charge cycles newer ones can make at least 2000 cycles, much like a laptop battery.