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The seller 151Wh (product capacity) / 100W (appliance power) * 0.8 (wire conversion loss rate of 20%) = 1.2 hours Capacity conversion: 151Wh * 3.7V * 100 = 40,800mAh 2W light usage time: 151Wh / 2 * 0.8 = 60 hours Hope it works for you~~

2023-07-05 02:59:12 Helpful (0)
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Djninjac Hi, maybe you can contact with the Banggood customer service team. https://www.banggood.com/Contact-Us_hi111

2021-02-03 12:27:10 Helpful (0)
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Herby According to the instructions you only need external power if the voltage input is less than 7.8 volts dc. A 12 volt boat would be ok..

2020-12-16 06:08:12 Helpful (0)
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