calvin_115 Posted October 26, 2012 Report Posted October 26, 2012 I have occasionally been playing my subwoofer at mid-level volumes with the car engine off. A month ago the battery was at 12.5v with the engine off and now it's at 11.90v. With the car on it's at 13.90v. If I stop bumping my music with the car off and drive the car more often, will the battery fully charge back up to +/- 14v? It's a stock electrical system: 80Ah battery with an 140A alternator. Amplifier is approximately 900 watts. Mids/Highs: stock Bang & Olufsen Lows: Image Dynamics IDMax 12v.3 Power: Sony Xplod XM-D9001GTR:Knukonceptz 4 gauge Box: 1.75 cu/ft Sealed Past: Pioneer Premier TS-W1207 (2)/ Rockford Fosgate P210/ Image Dynamics ID10V.3/ Infinity Reference 311A/ Audiopipe AP-18001D
Tarball Posted October 27, 2012 Report Posted October 27, 2012 dont do that to your battery leave the car on its also a good idea to top of your battery with a proper charger from time to time. CURRENT SYSTEM: Alternator: Stock alt on mids/highs Isolated DC Power 270 SP - Charging @ 16.8v Batteries: (2) XS D1400s Power Cable: Double Runs of 1/0 KNU Kolossus Fleks Headunit: 80-PRS Sub Amp: DC 5.0k Subwoofers: 2 RE MT 15s /PSI dual .7ohm recones Subwoofer Enclosure: 9.1cubes @ 32hz - brutal. Mids & Highs Amp: CT125.4 Active Components: Mids RE XXX 6.5c Highs - 3 RE XXX tweeters per side(A pillar) Noise Control: Damplifier Pro all over the cab. Build Log If you do business with me please leave feedback here: FEEDBACK THREAD Highest Legal Score: 151.0 db Highest Musical 30 Second Average: 151.6 db
calvin_115 Posted October 27, 2012 Author Report Posted October 27, 2012 dont do that to your battery leave the car on its also a good idea to top of your battery with a proper charger from time to time. So the alternator won't fully charge the battery? Mids/Highs: stock Bang & Olufsen Lows: Image Dynamics IDMax 12v.3 Power: Sony Xplod XM-D9001GTR:Knukonceptz 4 gauge Box: 1.75 cu/ft Sealed Past: Pioneer Premier TS-W1207 (2)/ Rockford Fosgate P210/ Image Dynamics ID10V.3/ Infinity Reference 311A/ Audiopipe AP-18001D
SnowDrifter Posted October 27, 2012 Report Posted October 27, 2012 A battery will take a couple hours to fully charge. Unless you drive your car for 3-4 hours at a time, the no. The alt won't fully charge the battery. But I think you might want to look into the source of the dead battery you mentioned ~~~~~~~~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
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