Wind cheating karthikai deepam

Karthikai evening (Thursday) at Mantri Synergy on OMR was particularly windy. Which wasn't conducive to lighting the traditional earthern lamps at our doorstep on the 9th floor flat in D block.We had to make do with battery-operated lamps that our daughter-in-law bought for us.

These are, I believe, one of those small items that have have helped China build up its huge dollar reserve trading with the US.I don't know if we get the battery-operated lamp in Chennai.
Maybe, someone sees in this a business model for a small unit making wind-cheater deepam. A switching mechanism at the bottom activates the battery, which, they say, can give us 24 hours of burn-time.