Ketharaman SwaminathanGTM360 Marketing Solutions - Pune
16 May 2017 | 3467 views | 2 | Recommends 0
A few months ago, I'd visited the South Indian temple town of Tirupati with my family. On the way, whenever the train stopped at a station, the engine was switched off. But the air-conditioning still worked because it was powered by huge battery packs installed in the AC coach. Coincidentally, the manufacturer of these battery packs is located clo...