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82问答网 > 12V.8.5W的电热毯.用12V4AH的蓄电池.能用几小时? 怎么算?

12V.8.5W的电热毯.用12V4AH的蓄电池.能用几小时? 怎么算?

2025-03-15 00:02:20

推荐回答（3个）

回答1：

首先计算工作电流，功率除以电压为工作电流，即8,5除以12V等于0.708，然后用电池容量除以工作电压，既4除以0.71等于5.65小时

回答2：

8.5/12=0.71A, 4/.071=5.63=5小时40分钟

回答3：

8.5W。。。这么小的功率。。。给跪了。。

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