Ohmmm Posted October 4, 2019 Report Share Posted October 4, 2019 How many XS D3100s can a 370 amp alternator safely charge? Having trouble finding an answer or equation to figure this out. Link to comment Share on other sites More sharing options...
AaronT Posted October 4, 2019 Report Share Posted October 4, 2019 It should technically charge as many as you need. Under load with 50,000 watts is a different story Link to comment Share on other sites More sharing options...
Mike4068 Posted October 4, 2019 Report Share Posted October 4, 2019 Your alternator maintains your battery. You can run as many batteries as you want on the alternator as long as you routinely charge your batteries with a charger. Each battery acts as a load on the alternator and will therefore leave less amps available for powering your electronics. This isn't a problem as long as you keep your batteries charged and won't destroy your alternator. Link to comment Share on other sites More sharing options...
Ohmmm Posted October 9, 2019 Author Report Share Posted October 9, 2019 Hmmm...so if I only had 3 batteries in a daily setup, is it still necessary to charge them with a charger? I currently have a d4800 and d3100. Strapping the DC 3.5k eventually, but I really only go full tilt on the hwy. Right now both bats are staying topped off nicely after a nice half hour drive of bumpin. I appreciate the responses! Totally forgot I posted this last week. Link to comment Share on other sites More sharing options...
Kyblack76 Posted October 9, 2019 Report Share Posted October 9, 2019 We sent 3 of our 4 alts to singer to have them rebuilt, and ran one alt on 24 batteries. SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold Link to comment Share on other sites More sharing options...
SnowDrifter Posted October 9, 2019 Report Share Posted October 9, 2019 At risk of possibly splitting hairs: An alternator isn't meant for charging batteries. That being said, you have essentially 3 options for powering your system, depending on needs. All have pros/cons 1. Lots of alts / few batteries - lightest weight, most sensitive to 'overloading' as you're depending on your alts to supply power. Exceed alternator output and your voltage tanks. 2. Single alt / lots of batteries - sometimes a necessity depending on your vehicle. Won't have 'good' voltage but it's adequate for short demos / burps / etc. Play time will be limited and you'll need to be cognizant of your alternator temperature. Avoid idle time here. Spin the alt up and get those fans working 3. Many alts / many batteries - high power stuff. Most expensive, also the most robust. ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444 Link to comment Share on other sites More sharing options...
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