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Vinyl Asylum: I recommend using 12v rechargeable sealed lead-acid batteries... by John Elison

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I recommend using 12v rechargeable sealed lead-acid batteries...

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You can buy 7-Ah sealed lead-acid batteries pretty inexpensively on eBay. Then, I recommend a 500-mA battery charger. The only one I’ve found is about $20 plus shipping at Batteries America. I don’t recommend the 1000-mA charger they sell on eBay because I think it might put too much current into a small 7-Ah battery. Anyway, using 12v, 7-Ah rechargeable batteries will reduce your power supply costs significantly and yet still allow you remain free of electrical mains noise.

Best regards,
John Elison

PS. If you decide to still use 9-v batteries, I recommend using 9-v lithium batteries. You can usually find these on eBay for a reasonable price.


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