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Dear, I need your help to know that battery can be used for a boombox with these components (attached image).I want it to last at least 5 hrs battery and can continue to use connected to the mains.Besides that when connected to the current is charging the battery automatically.Thanks and sorry for my English.http://i.imgur.com/f5Jof4D.jpg
Thank you for this DIY, but I have some doubts.1. lithium battery has output of 1 v and the audio board's 4 v (sound loses power with that?).2 - The audio board says it is 8 ohms and 4 ohms speakers JL. Can not this burn the audio board?Sorry for my English.Greetings.
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