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Hi jman, is this a portable setup for offsite use? If so a Marine Deep Cycle Battery which can be found at any boat store will do the job. The no maintenance ones cost more, but it's one less thing to think about. When calculating your total amps remember to do it for the entire night and not just one hour (e.g. 10Ah is 80A for 8hrs). Something else to consider when choosing a battery is size and weight. They're not light and are awkward things to carry around in the dark.
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