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Whats a good 12v power supply to buy to bench test car audio?
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<blockquote data-quote="akillj" data-source="post: 8305268" data-attributes="member: 644272"><p>You're assuming the source is a mere 10 volts... (10v*10a = 100w)</p><p></p><p>If you use JUST a charger (No batt) you would get available amperage * charging voltage. Assume it's charging at 14.4v and can supply 5A of power.. 14.4 * 5 = 72w. Using a charger without a battery is pointless imo. What OP should do is just get one very small AGM battery and a simple battery charger. Get battery's AH rating and you can figure out from there how much power you can supply for any given amount of time. (50AH * 12.9 = 645W for one hour, or twice that for half an hour, and so on)</p><p></p><p>I wouldn't even bother adding the chargers supply, because even if it's charging at 14.4, it won't be able to handle any load. (Say it charges at 5A) After 5A is exceeded, the voltage will quickly fall to battery resting voltage anyway.</p></blockquote><p></p>
[QUOTE="akillj, post: 8305268, member: 644272"] You're assuming the source is a mere 10 volts... (10v*10a = 100w) If you use JUST a charger (No batt) you would get available amperage * charging voltage. Assume it's charging at 14.4v and can supply 5A of power.. 14.4 * 5 = 72w. Using a charger without a battery is pointless imo. What OP should do is just get one very small AGM battery and a simple battery charger. Get battery's AH rating and you can figure out from there how much power you can supply for any given amount of time. (50AH * 12.9 = 645W for one hour, or twice that for half an hour, and so on) I wouldn't even bother adding the chargers supply, because even if it's charging at 14.4, it won't be able to handle any load. (Say it charges at 5A) After 5A is exceeded, the voltage will quickly fall to battery resting voltage anyway. [/QUOTE]
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Whats a good 12v power supply to buy to bench test car audio?
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