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How to pick best battery for amplifier? Answered

Hello, I ordered this amplifier and I need to pick best battery for this amplifier. Would be great to power it for at least 3-4 hours on maximum volume (200W rms subwoofer and 2x50W rms speakers). I need lightweight battery and powerful battery, size does not matter, budget is low so nothing overpriced I do not want.

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Downunder35m

2 years ago

For max volume on this setup you need close to 1kWh coming from a 24V battery - that is without the voltage breaking down with the charge going lower.
Would have been better to select an ampd that runs on 12V.
Still easier to build a generator with an old lawm mover and alternator, and cheaper too.
Batteries must be huge and deep cycle, so nothing on the cheap for this kind of power.

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RobertasP4Downunder35m

Reply 2 years ago

Hmmmm... U thought about connecting 2x 12V 7Ah batteries, but I don't know how long it would last. :/ Or maybe connect a bunch of 18650 li-ion. It's because I don't know how to calculate how long will last my battery. :/