can replace batteries at LG Vac if my battery dies just put in a new one and boom fully charged! You don't have to wait 3-4 hours to charge it like Dyson with non-removable battery. The engine of this device is powerful and quiet and has Hepa filtration. This device comes with various attachments, a charging station and a spare battery, which is very handy for a cordless vacuum cleaner. I've had good experiences with lg products in terms of reliability, the same goes for another leading brand of vacuum cleaners. Overall very happy with this purchase