Unverified85% confidenceTradeoffTime unknown
供电时长与亮度、灯珠数量存在矛盾：同容量电池下灯珠越多越亮则续航越短，氛围用调低亮度可延长2-3倍续航
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Unverified亮度越高续航越短，两者不可兼得：追求长续航过夜用调至100流明以下，短时高亮照明再切换高档，选带无级调光的灯比固定三档更省电88% similarUnverified亮度越高越费电且发热越大：同容量电池下1000流明灯高档续航可能仅2-3小时，追求超亮往往牺牲整晚续航，需在场地大小和过夜需求间权衡85% similarUnverified亮度流明越高越费电，全亮档常开的免安装灯续航会锐减到标称的1/3甚至更低，长期常亮需求本质上更适合布线电源灯而非充电款85% similarUnverified亮度可调范围越宽（如10~200lm）灯具体积和电池越大，便携性越差；纯出行随身用200lm以内、单一暖光的小灯更轻便84% similarUnverified亮度越高续航越短、电池越重，头灯整体越重：轻量化（<50g）与高亮度长续航本质冲突，需按主场景取舍，不要盲目追求高流明84% similar
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