Read and follow the manufacturer's charging instructions.
Always use the manufacturer's battery, cord, and power adapter made specifically for the device. Aftermarket and generic accessories have been linked to serious lithium-ion battery fires.
Plug the charger directly into a wall outlet, not a power strip or extension cord.
Don't leave a device unattended while charging. Disconnect the charger when the device is fully charged - do not overcharge the device.
Charge devices on a hard, stable surface - never on a bed, couch, or pillow.