India, Oct. 19 -- India's push toward rooftop solar, electric vehicles and data centres is lifting demand for the less visible equipment behind them: inverters, battery storage, chargers and backup power. Electronics manufacturers that once assembled boards for air conditioners are moving into these higher-value products. The companies that design and build the full system, not just assemble parts, tend to capture more of the margin as the market matures. The Nifty 50 traded at 23,075.80, down 0.31%, while the Sensex rose 0.33 to 74,485.14 on Monday. Meanwhile, Shares of Amber Enterprises India were trading at Rs. 6,630.50, down 0.66% from previous close of Rs. 6,668.00. The stock opened at Rs. 6,695.00 and reached an intraday high of Rs...