How long?

[corto 10+ year member]

What would be a reasonable time i would be able to play a 1100 watt amp off a car batter thats turned off with out going dead. I know you can not give exact but with no alt upgrade and just a norma batter if you need to kno the battery i can check tomorrow it is nothing speical tho. How long can you run you system with out your battery going dead. i was thinking 15 - 30 min. whats your numbers

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[PhatTonyDeMarco 5,000+ posts]

It would depend on the current draw of your amplifier and HU, but mine wont last 15 minutes and I only have a single 1250w amp.