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  1. psykopyro

    Help for batteries in my homemade portable speaker

    Hello everyone I am building a portable speaker. I am using the Logitech Z-640 Speaker system and two Razer electric scooter batteries. I had a few questions regarding how to power this thing. First of all, the batteries are each 12V, 9AH. Again, I have two of these. The way I found out what...

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