The term 'Loses Power' can be summarized by two crossword solutions: 'Wanes' (5 letters) and 'Runs Out of Juice' (14 letters). Wanes means to gradually decrease in strength, intensity, or magnitude over time. This is often used to describe the waning of a light source, such as a candle or a lightbulb. 'Runs Out of Juice' is an idiom that means to become exhausted or to lose energy. This phrase is often used to describe a battery or other power source that has been drained of its energy.