Bring home the Philips Ujjwal mini emergency LED lantern if you don’t want to get caught off guard by unscheduled power cuts. Compact and portable, this energy-efficient emergency light has powerful bright light of 100 lumens. This blue lantern is also lightweight, so you can take it along during trips. Charging Time and Operation Time This rechargeable emergency lantern runs on a 1200 mAh battery. The battery has a backup of up to 4 hours on a single 4-hour charge. Power Consumption This lantern consumes only 2 W of energy, so don’t worry about footing a huge amount for your electricity bills.