I have an LG G3 which I paid $50 for (upgrade price) which included an extra battery and battery charger (promo period). Being able to swap in a fully charged

I have an LG G3 which I paid $50 for (upgrade price) which included an extra battery and battery charger (promo period). Being able to swap in a fully charged battery in seconds is something I now depend on when I travel - I never have any battery life anxiety. The lack of swappable batteries on most phones is a huge turnoff for me.