Sturlite 8.5W Inverter LED Bulb with 3-Hour Battery Backup

<p>A power cut means scrambling for a torch or phone light. This bulb screws into any normal B22 holder, charges itself while the mains are on, and simply keeps glowing for about three hours when the supply drops.</p><p>Inverter bulbs are surprisingly rare in Indian homes despite costing about the same as a regular LED. Rated 3.9 stars across 3,419 ratings on Flipkart.</p>