HAVELS Pride Plus 20W LED Inverter Batten is an excellent choice for Homes and Work Places that do not have an Inverter setup. During Power failures the Inverter Batten can provide lighting from a minimum of 4-Hours to a maximum of 10-Hours just at the operation of your regular switch. The Inverter LED Batten comes with a unique 3-Step Dimming process. As the Power goes off and when the Switch is ON the charged Inverter Batten will automatically provide lighting for 4-hours under 500 lumen in DC Mode. If the Switch is turned OF and ON it will move to 170 lumen in DC Mode offering lighting for up to Hours. Similarly if the Switch is turned OFF and ON for one more time the Inverter Batten will swicth to 75 lumen in DC Mode offering power backup up to 10 Hours. Salient Features: System Power: 20W LED LED Colour: 6500 K CCT (Cool Day Light) Lumens: 2000 lm (100 lm/W) Length: 1.17 M (1" short of 4 Ft) Battery: Lithium Iron Battery with Short Circuit Protection Battery Rating: 2600 mAH (BIS Approved) Surge Protection: Up to 4kV High Voltage Protection: Up to 400 V AC Charging Time: 8-10 Hours Warranty: 1-Year