mattc3366 Posted December 16, 2011 Author Report Share Posted December 16, 2011 So I would have no problem stressing my alternator by hooking up the trunk battery and leaving it? Quote subwoofers - two eclipse 88120s box - 3.4 cubes tuned to 32 hz amps - aq1200 and pheonix gold zx450 New build : 2 obsidian audio 15s same amp 6.1 cubic foot box tuned to 32 hz in a civic hatch Link to comment Share on other sites More sharing options...
MrSkippyJ Posted December 16, 2011 Report Share Posted December 16, 2011 Just putting a second battery in your car will not stress your alternator much at all. When you start placing added demands on the electrical system (a system for example) and your alternator can't keep up is when you stress your alternator. The battery (or batteries) can help fill in where the alternator can't keep up, but then the alternator has to charge the batteries too. You can help reduce the amount the alternator has to work by keeping your batteries charged while you are parked, whenever possible. So again, adding batteries won't really add much stress to your alternator unless you are discharging the batteries somehow and making the alternator charge them up. Quote F150: Stock 2019 Harley Road Glide: Amp: TM400Xad - 4 channel 400 watt Processor: DSR1 Fairing (Front) 6.5s -MMats PA601cx Lid (Rear) 6x9s - TMS69 Link to comment Share on other sites More sharing options...
mattc3366 Posted December 16, 2011 Author Report Share Posted December 16, 2011 Ok thanks man. I appreciate all the help. My voltage gets at a low of 13 when slowing down at red lights and stuff and slowly goes back up to 13.8 while stopped. So my voltage isn't crazy bad. Quote subwoofers - two eclipse 88120s box - 3.4 cubes tuned to 32 hz amps - aq1200 and pheonix gold zx450 New build : 2 obsidian audio 15s same amp 6.1 cubic foot box tuned to 32 hz in a civic hatch Link to comment Share on other sites More sharing options...
MrSkippyJ Posted December 16, 2011 Report Share Posted December 16, 2011 na, 13 isn't too bad. Quote F150: Stock 2019 Harley Road Glide: Amp: TM400Xad - 4 channel 400 watt Processor: DSR1 Fairing (Front) 6.5s -MMats PA601cx Lid (Rear) 6x9s - TMS69 Link to comment Share on other sites More sharing options...
sprkn_ranger Posted December 16, 2011 Report Share Posted December 16, 2011 Oh a and don't forget to put a fuse as close to the + terminals of all your battery's as possible. Having only one fuse inbetween two battery's is useless. Hope that made sense! Quote Check out my build log! 4 Havocs in a blowthrough http://www.stevemeadedesigns.com/board/topic/187506-sprkn-rangers-blowthrough-build/ Link to comment Share on other sites More sharing options...
mattc3366 Posted December 16, 2011 Author Report Share Posted December 16, 2011 While driving the lowest I think I've seen is 13.6 and that was at night. So now what battery should I get? Quote subwoofers - two eclipse 88120s box - 3.4 cubes tuned to 32 hz amps - aq1200 and pheonix gold zx450 New build : 2 obsidian audio 15s same amp 6.1 cubic foot box tuned to 32 hz in a civic hatch Link to comment Share on other sites More sharing options...
mattc3366 Posted December 16, 2011 Author Report Share Posted December 16, 2011 I gotcha! So after the trunk batt in between the amp? Quote subwoofers - two eclipse 88120s box - 3.4 cubes tuned to 32 hz amps - aq1200 and pheonix gold zx450 New build : 2 obsidian audio 15s same amp 6.1 cubic foot box tuned to 32 hz in a civic hatch Link to comment Share on other sites More sharing options...
sprkn_ranger Posted December 16, 2011 Report Share Posted December 16, 2011 I'll try and draw you a diagram: Front batterry---fuse-------------------fuse---rear battery Basically your fusing the wire to prevent fires. So if you have more than one battery and the wire inbetween the battery's shorts on the frame or something the one fuse will blow but the other battery isn't fused so it shorts, the wire heats up and eventually catches fire. And you want to have the least amount of wire between the battery and fuse as possible so there is less wire to short out on something. So basically you want a fuse for every + wire that comes off of any battery and use the shortest amount of wire between the battery and fuse as possible. And always fuse to the wires rating. Quote Check out my build log! 4 Havocs in a blowthrough http://www.stevemeadedesigns.com/board/topic/187506-sprkn-rangers-blowthrough-build/ Link to comment Share on other sites More sharing options...
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