system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Does leaving the charger in mobile technologies (i.e., laptops, tablets, phones, etc...) really degrade the battery life significantly or is it just some tech myth?
gpt
Trickle charging does have an effect on a batteries life-span. But, it's not that much of a big deal. Granted, you would notice a difference if you had 2 laptops, one that was constantly trickle charged, and one that was not. The trickle charged battery would, over time, hold an inferior charge. 

Realistically though, you probably won't notice a difference. 

tl;dr Yes, it does, but the degradation is quite minor.