looks like your battery  is completely dead。 battery电池。completely 完全 drain battery。 流干电池  probably you left the light on and that would drain your battery. drain 流干，排水。left the light on 开着灯。 I'll jump star for you .我帮你启动试试 jump star启动，The average life expectancy  of a battery is four to six years. 电池的平均预期寿命是4到6年。 average平均 expectancy 预期。 ecpect  期待 延伸造句 the average life expectancy of a phone is two to three years.