I have a 2009 accord sedan, with a sound system installed. How many amps should my alternator be to charge my 3 batteries? My OEM alternator currently puts out 130.

  • Welcome to Motor Vehicle Maintenance & Repair! – Pᴀᴜʟsᴛᴇʀ2 Mar 12 at 17:39
  • 2
    Need the details of your batteries for a start. – Solar Mike Mar 12 at 18:00
  • I have one optima yellow top under the hood, and 2 XS leasure batteries in trunk. – Jdm Silly Mar 12 at 21:56
  • 5 amps will charge 3 batteries (very slow), so your 130 amp should have no problems. Generally you only need a larger alternator if you are running big amplifiers or air bag pumps/ hydraulic systems added to your car. – Moab Mar 15 at 22:45

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