Originally Posted by
Steve B.
One thing that is never consistent is battery life, which is often all over the map. Somebody on the HH site reported near 19 hrs, of battery life. I've never seen more than 12 to 14 and right now and for unknown reasons is down to 8 or 10. The Edge site has people constantly complaing about the 520 with 4-6 hrs. Others have no issues. No explanations.
Of course you're aware that battery life depends strongly on settings. Screen light, in particular, eats up battery life on a GPS just like it does on a cell phone. Set your screen to full brightness and always on, and 4 hours would be a great battery life with a new battery. Not much of a mystery there.
In addition, the 520 hasn't been made for a few years, so those batteries are getting old. Battery life depends on the number of charge/discharge cycles, as well has the history of the battery (ever leave a device on the charger overnight?). So the 520 comparison isn't particularly illuminating.