Battery for Amplifier and CD Player

[santoshlv426]

I'm sure this has been covered, but here goes.
If I want a battery on which to run a stereo amp, CDP or AV Amp, CDP and probably an LCD screen how do I calculate the size of battery I require if I want the battery to supply continuous power a max load for 2 hrs.

I know the amp states 330W on the rear panel.

Unlike a motor the battery needs onlyy cater for peak power draw from the amp and not need to provide "start up" power for the motor, which is usually much higher.

Thank you

 

[chrisc]

 

[santoshlv426]

 

[David Morris]

 

[santoshlv426]

 

[Baseline]