rechargeable ceiling FAN is the latest technology BLDC Ceiling fan , it comes with remote and inbuilt Lithium Ion Battery pack for backup time up to 4 Hours for complete freedom from frequent power cuts. No need of inverter, no need of battery, just plug and play. Inbuilt premium quality lithium-Ion rechargeable battery with BMS for longer backup and longer life. Battery automatically charged while fan is running on grid supply, it takes 4 to 5 hrs to get fully charged. Short circuit protection and Low/High cutoff protections provided in the battery for your safety. Automatically switch between grid and battery. High Speed BLDC motor for wider air delivery.