Why My Mobile Battery Is Not Charging. When i remove the charger it stays on for 20 seconds but its moving verry verry slow it s like the battery not giving enough power. Just received my Osmo Mobile - unfortunately the battery doesnt charge when connected to an USB.

First use the cordless handset without recharging it until the phone alerts you that battery is low. This means it has a lot of advantages over Ni or Pb batteries especially when it comes to charging memory. Try moving your iPhone and charger to a cooler location.
Change the charger and check.
Im a One plus user. Preparing and connecting the Android device. As you already know your phone battery is made of Li-ion. The charging cable should fit snugly into the port and should not feel loose.

