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<blockquote data-quote="keep_hope_alive" data-source="post: 7455921" data-attributes="member: 576029">I use solar panels on boats to keep the batteries charged between usages since boat alternators are tiny.&nbsp; Works excellent, even 10W is plenty to recharge the batteries.&nbsp; I would recommend a solar panel and charger if your alt isn&#039;t fully charging your battery due to usage and output.&nbsp; It would prolong the life of the battery.But #1 you need to properly wire the alt to battery wire, fusing where necessary and using grommets when passing through metal.&nbsp; No exceptions.Your plan will work though. yes the solar charger would re-charge the battery and the system would run off the battery alone for a few hours.&nbsp; This cycle would repeat.&nbsp; I&#039;ve designed outdoor mass notification speaker systems that do this very thing.&nbsp; The amplifiers are powered by batteries and the batteries are charged with solar panels, totally off the grid.&nbsp; Those systems can be thousands of watts at 8 ohm, the battery cabinets are sized appropriately.&nbsp; That is where your plan may fail, your single battery can only supply so much current for so long, the amp-hour rating or reserve capacity rating tells you this.</blockquote>

[QUOTE="keep_hope_alive, post: 7455921, member: 576029"] I use solar panels on boats to keep the batteries charged between usages since boat alternators are tiny. Works excellent, even 10W is plenty to recharge the batteries. I would recommend a solar panel and charger if your alt isn't fully charging your battery due to usage and output. It would prolong the life of the battery. But #1 you need to properly wire the alt to battery wire, fusing where necessary and using grommets when passing through metal. No exceptions. Your plan will work though. yes the solar charger would re-charge the battery and the system would run off the battery alone for a few hours. This cycle would repeat. I've designed outdoor mass notification speaker systems that do this very thing. The amplifiers are powered by batteries and the batteries are charged with solar panels, totally off the grid. Those systems can be thousands of watts at 8 ohm, the battery cabinets are sized appropriately. That is where your plan may fail, your single battery can only supply so much current for so long, the amp-hour rating or reserve capacity rating tells you this. [/QUOTE]

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