P4killer_ Posted April 30, 2014 Report Share Posted April 30, 2014 Im sooo confused. are ppl arguing concrete or sitting drains a bat? I would agree that concrete has nothing to do with anything. And Ive only let wet cells sit for long periods of time, and YES THEY DRAIN. Not like the earth absorbing the energy or any stupid, but idk the acid inside becomes weak or w.e and the specific gravity of the cells gets a bit off. Especially in the elements. I took my wet cell outta my monte it was like a year old, put in a d3400. The batt was in fine shape. The batt sit for like a year on the floor in a garage. When I sold the car, I charged it up some, put in the car.. It was dead wouldnt even crank even after 24 hours on trickle. So something happened. Its not like I can charge a wet cell up to 12.8v leave it sit for a year and still read 12.8v because it wont. Ive done it. But I did open em up, top em off, check the gravity, give em a charge and they turned right around and work great. AGM batts I have no idea. All ive ever owned is the two batts below and they been in a car their whole lives. My friend has had an xp2000 sitting in the garage for a few months at least and while I havent metered it or anything, we use it off an on for testing things load tested it to like 300a a few times even and it seems fine. So maybe AGM is different. Wet cells for sure sitting isnt good. Especially in a cold drafty garage for a year no doubt. Quote Setup: 2010 Hyundai Elantra Factory Unit via 4 chan NVX LOC Excessive Amperage "H/O" Alt Xs D3400/ Xs XP3000 Big 3. 2 Runs of +, 2 Runs of - DD M3b and 2 12" AQ HDC4s Link to comment Share on other sites More sharing options...
S15_Silvia Posted April 30, 2014 Report Share Posted April 30, 2014 Clearly the acid in the batteries is affected by the Schrodinger's constant of energy squared k value of the concrete's specific rotational momentum about the Andromeda galaxy. 1 Quote 2016 Subaru BRZ | Sony XAV-AX100 | Rockford Fosgate DSM 4080 & DSM 40ix | On 6/6/2012 at 6:32 PM, 'LZTYBRN' said: 3. Don't put speakers outside the car unless you are the ice cream man. My feedback thread Link to comment Share on other sites More sharing options...
Karkov Posted April 30, 2014 Report Share Posted April 30, 2014 Interesting stuff guys, thanks. I always heard the whole *sitting on concrete is bad for batteries* stuff too. Never knew why or never knew anyone to prove or disprove it. Always avoided it anyways. Nice to know it doesn't matter though. 1 Quote 2007 Chevy Tahoe (SOLD) 12 ~ FI Audio X series 10" w/BP option 2 ~ DC Audio 5.0K @0.67 3 ~ DC Audio 5.0K @1.0 2 ~ PPI 3 way sets (not installed yet) 1 ~ RF T400-4, 1 ~ RF T600-2, 1 ~ RF T600-4 4 ~ CT Sounds 5.25" Strato comps (rear fill only) 1 ~ XS Power D4800 1 ~ XS Power D3400 8 ~ XS Power XP3000 160 stock alt, Mechman 370 Elite, 185 DC Power 320+ Sq. Ft. Sound Deadener Pioneer AVH-X5500BHS Youtube: https://www.youtube.com/user/knfjdkghjudfhsgkjdhf/videos?sort=dd&view=0&shelf_id=0 Link to comment Share on other sites More sharing options...
P4killer_ Posted April 30, 2014 Report Share Posted April 30, 2014 Its funny bc I never heard of the concrete myth. 1 Quote Setup: 2010 Hyundai Elantra Factory Unit via 4 chan NVX LOC Excessive Amperage "H/O" Alt Xs D3400/ Xs XP3000 Big 3. 2 Runs of +, 2 Runs of - DD M3b and 2 12" AQ HDC4s Link to comment Share on other sites More sharing options...
_paralyzed_ Posted April 30, 2014 Report Share Posted April 30, 2014 AGM batteries absolutely drain just sitting too. That's what "intelli" or "smart" chargers are for. They detect the drain and re-peak the battery. Quote Link to comment Share on other sites More sharing options...
Kyblack76 Posted April 30, 2014 Report Share Posted April 30, 2014 Sitting back, waiting for the "run your power wires seperate from your signal wires" guy..... Quote SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold Link to comment Share on other sites More sharing options...
ROLEXrifleman Posted April 30, 2014 Report Share Posted April 30, 2014 Sitting back, waiting for the "run your power wires seperate from your signal wires" guy..... That's urban legend But you shouldn't run your power and RCAs along concrete, that's fact! Quote Rolex you sicken me. Just let me finish my pie ~ Juice Link to comment Share on other sites More sharing options...
tyma1026 Posted April 30, 2014 Report Share Posted April 30, 2014 (edited) Does anyone know why people say that It will drain it? Snow may have already answered that. I have a very scientific answer. If you leave a battery, on a piece of cement,..... in time, it will loose draw. Let me know if you need any more info Agreed! Edited April 30, 2014 by tyma1026 Quote Link to comment Share on other sites More sharing options...
tyma1026 Posted April 30, 2014 Report Share Posted April 30, 2014 A few minutes on a hot summer day and a battery on concrete will discharge, making it literally rain acid. Beware!!! Quote Link to comment Share on other sites More sharing options...
tyma1026 Posted April 30, 2014 Report Share Posted April 30, 2014 J/k but seriously, wouldn't hot concrete cause a battery to discharge faster? Quote Link to comment Share on other sites More sharing options...
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