If the load is above 75 milliamps (.075 amps) after the initial surge, then start removing fuses or connections to the positive battery post one-at-a-time until the offending electrical component is identified by the parasitic load dropping to within 75 milliamps (.75 amps). Starting with the highest scale, determine the current load. With car off, no loads (doors closed, hood lite disconnected etc.) Disconnect the neg lead, attach the meter in series between the lead and the neg post. Sounds like you may still have a phantom or parasitic load going on. If its a gel deep cycle battery it is probably OK, they are designed to be recharged afetr full discharge hundreds of times. You cant test the specific gravity of the closed battery, and thats a drawback. Did you happen to see, or did they say? Did they do a load test, or an open circuit voltage test? Both are good indicators that most 'zone' type garages probably wouldnt do. I'm just wondering what the guys at autozone did for the battery test. Is it possible the battery isn't able to hold enough charge but still test ok? Thanks for your input. I'm convinced it's the battery but Autozone won't exchange it unless it tests bad and I may just bite the bullet and get a new one from Costco. The only thing I have left to try is unplugging the stereo amp and not running the stereo and seeing what happens. The only thing that is on when the truck is off is the clock and the light around the ignition key hole. The alternator was replaced last year with OEM and LR and my mechanic both said it was ok and there are no large power draws. I tested it a month ago and that time they had to recharge it to test it and it was ok. They had to completely recharge it just to test it and it tested good. drive from work (didn't turn anything on during the drive). It's a duralast gold so I took it to Autozone after a 30 min. After work was over the car wouldn't start again just not having quite enough juice in the battery to start. It did start ok this morning but I had charged again 8 hours earlier before I went to sleep. I threw a jump starter on it and it started up without hesitation. I try to start the car the next afternoon and the battery has enough power to strongly release the door locks and the dash lights looked bright, but it just didn't have enough power to start the car. Charged the battery and left it alone the rest of the day. I finally got around to changing the lock cylinder on Wednesday and thought that was it. I stopped charging it before I went to bed because it would lose it by the next morning. It got worse to the point where it would lose just enough charge during work that I'd have to jump it and I was having to constantly re-charge it with a charger I bought. I needed a new ignition cylinder because my old one was broken and wouldn't turn off all the way causing the battery to drain if my D1 wasn't used for a few days. Meanwhile I am slow charging the battery and will have more data tomorrow.I thought I had my electrical problem figured out. He told me they don’t use hygrometers nowadays because there are so many different varieties of plates and acids used in batteries, there would need to be many different hygrometers. The technician told me there’s no pro-rated warranty after the 3 year free replacement period is up on my May 2012 battery, but that their new batteries are better than mine, and have a 2-year pro-rated warrant after the initial 3 year free replacement period. Their device printed out a slip that said GOOD BATTERY CCA 710 out of the rated 800 Voltage 12.67 Temperature 83 F. I drove to WalMart and they tested the battery today. I did not read the actual specific gravities, but all the cells read in the red zone (not charged), some slightly in the red zone, some firmly in the red zone. I easily jump started the vehicle with a small lawn and garden 12V battery I keep in the garage on a trickle charger.Īfter a couple weeks and some long trips I tested the van’s battery with a hygrometer. A couple weeks ago my 4 year old WalMart MAXX battery couldn’t turn over the van after I ran a Coleman cooler for about three hours.
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