How to use Garmin's battery more effectively? I've bought a second hand Garmin Edge 800 for a while ago. So far, I'm nothing but delighted about the device and the battery life. However, since I have to plug it in in order to upload my rides, it usually gets charged when plugged in so my battery level almost never gets under 50-60 percent, sometimes not even so.  

That makes me wonder if I'm doing the right thing. About batteries, sometimes I hear that it's better to empty the battery and then fully charge it. What are your opinions about this? Do you do anything to extend your device's battery life? Or do you worry at all?
From my research, the Garmin Edge 800 uses a 1Ah lithium ion battery. 

In general, these do not have a memory effect like older rechargeable batteries. But some care is still worthwhile, for example storing the battery completely charged (in a hot environment) or completely discharged is damaging. 

Partial discharge cycles are generally seen as good for them. A full discharge and recharge every 30 uses is recommended by some sites.