LG K8 Guia Del Usuario página 114

4 To replace the cover onto the device, align the back cover over the
battery compartment and press it down until it clicks into place.
Charging the battery
Charge the battery before using it for first time. Use the charger to
charge the battery. A computer can also be used to charge the battery by
connecting the device to it using the USB cable.
WARNING
Use only LG-approved chargers, batteries and cables. If you use unapproved
chargers, batteries or cables, it may cause battery charging delay. Or this can
cause the battery to explode or damage the device, which are not covered by
the warranty.
The charger connector is located at the bottom of the device. Insert the
charger and plug it into a power outlet.
Basics 21