New Battery Went Dead, Then Was Fully Charged.Has Been In The Car And Has Died On It’s Own…….read On……
Posted in Car Batteries | Asked on Jun 2, 2010
If a car has a new battery in it,then it goes dead, then is recharged to 100% using a battery charger……why then after less than a week of it being in the car, only driven once during this week I should mention, would the battery be practically dead now? Bad battery? Bad alternator? Suggestions anyone?
There are 3 Answers for "New Battery Went Dead, Then Was Fully Charged.Has Been In The Car And Has Died On It’s Own…….read On……"
this is why you buy a repair manual.you would have had instructions on how to troubleshoot the system.its cables,bad alternator, or you have a hot going to ground with resistance.(that could be a glove box light,etc.)
New or Reconditioned Battery? Have the Battery Fully Charged and “Load Tested at 50% of CCA for 15 Seconds & not dropping below 9 Volts (During the test) showing you if the Battery will Take & Hold a Charge; Have the Alternator “Load Tested” to make sure you are getting the listed Amperage, Low Amps Means Bad Diode(s) that will Drain your Battery. Make Sure all Grounds are Clean & Secure (Battery to Frame & Block, Alternator to Block, Starter to Block & Block Strap to Firewall), Check for short at Starter Solenoid, Are the Battery Cables Good? Clean & Secure at Battery and Starter Solenoid?
something is draining the battery. there are some things in a car that draw power constantly, clock, and memory for a digital radio are the obvious ones that come to mind, but if you have installed aftermarket gadgets, such as an amp or if you have a GPS that you keep plugged in all the time, one of them may be drawing power and draining the battery. EASIEST way to test, pull the fuse for your radio, and if you have a seperate clock, pull that as well. disconnect the positive battery cable and hook up a 12V test light between the battery and the battery cable. if the light is on, something is drawing power, simply pull fuses until the light goes out. For example, if you pull the fuse for the cigarette lighter and the light goes out, the lighter is drawing power, and if nothing is plugged into it, it may be faulty.An exact diagnosis is difficult not knowing the year make and model, past maintenance history, aftermarket components installed, etc.