Eneloop Blacks are Awesome-GPSMAP64st

[atnbirdie]

Just got a GPSMAP 64st. Bought some new Eneloop Pros (black; ~2500 mAh) and charged them to max. Put them in my 64st and it is still going nearly 18 hours later. Now all I've done is have it sitting on the desk, or in my pocket as I walk around the house. Did do a 30 minute walk and 35 minute run with it as well. Also playing with it to get used to functions, customize, etc. GPS and GLONASS both on; WAAS off; backlight at default 15 secs; battery saver mode off. I'm sure if I was put geocaching or just hiking the power drain would be greater, but I am impressed with these batteries.

 

[Nuvi-Nebie]

The power consumption of your 64st shouldn't go up when hiking etc, as it is still doing all the same tasks when indoors, things that will shorten battery life include, display backlight, Bluetooth, camera etc.