You will be staying in teahouses or lodges at the end of each trekking day from Lukla to Chhukung. As a result, for a modest fee, you will be able to charge your electronic gadgets here. However, as you leave Chhukung and return to Pangboche via Island Peak, we shall rely on solar chargers as long as the days are sunny; otherwise, charging your smartphone would be impossible. Extra batteries and power banks are recommended.