I just went through this with my van. Battery died with the van off and the radio on for more than 5 minutes. Literally jumped it all the time. I replaced the battery, battery didn't work. Found out it wasn't charged when I bought it (as a lot of places don't pre-charge them now) so I charged it and it worked fine. Check with the place you bought it from and ask if all batteries are pre-charged. If not, bring it to them to charge it for you if you don't have a charger handy. Double check all the fuses are good while you are at it.
Secondly, if the alarm/starter is aftermarket or was installed by anyone other than a professional alarm installer, you very well might have something draining the battery constantly. I hear more problems from people with alarms than anything else when it comes to dead batteries.
Thirdly, once the battery is charged, the voltmeter (read the instructions how to check voltage with DC volts) should read between 12 and 13 volts across the battery posts while it is running. This indicates the alternator is functioning. If you shut it off it should be just about 12 volts. If you test it again in about 30 minutes and it already falls below 12 or 11.5 volts, there is definitely something draining it. Lastly, check to see if the glovebox light is on, or some odd light in the back of the car or in the trunk or what not. Sometimes all it takes is one little light to drain a battery. Or a faulty install of an alarm system...
Just for sake of safety, make sure the connectors on the posts of the battery aren't corroded. Use just plain ball bearing grease or vaseline after cleaning them with a wire brush (or replacing them altogether).
Good luck.
댓글 5개
remove these (2) fuses under the hood "#1:Passive motor L & #2:Passive motor R " make sure u unplug while battery is connected ign (ii) and driver door shut, so u can keep your top sliding buckle all the way back where u can always use it,****fixed my battery draining over night issue , after new alt new cables new battery it turned out to be these *2 fuses = SOLVED DYING OVERNIGHT ISSUE
Mario Diaz 의
Were are this two fuses on my 2005 acura #1:Passive motor L & #2:Passive motor R "
Javier zuñiga jr 의
After buying a new battery (car) after a couple of days went to start and battery was dead flat, after having it charged it was flat after a couple days found the problem was shorted diodes in alternator (was draining 5 amps Replacing new alt. I decided to put a 60-100 amp relay between alternator and battery switching on when car ignition is turned on, the circuit is broken when ignition is off, thus if the diodes short won't drain battery.
Rodney J. Lang 의
Would that be the same fuse for a 2016 Ford Fiesta? Had the alternator and battery checked yesterday and both still we're good. My car is dead in the morning after being parked overnight. Any recommendations will be helpful. Thank you in advance
rnutumya 의
When I had the battery and alternator tested yesterday I was told that battery was still at 95% and alternator was steady at 14.5
rnutumya 의