Cars battery needs a jump at times, had the battery load tested came back with no proiblem. No lights are left on during the time it sits outside at work at night. Need Help Thank You

The wiring cud hav issues n batts or cars these days may need reflashn..dont go tua dealr..poor mechanics there. Seek n independent. First test the chargn wire from the alternator to the batt..they wearout or becom corroded. Hav someone hook a jumprcable in place of it to see if battery doesnt drain

Alot of things. Could be a short or a bad diode in the alternator. Or even as simple as a bad relay.

Check that all your ground wires are well attached and attaching points are clean and free of corrosion. Also check for parasitic drains such as an underhood light, trunk light, map light, floor lights, something plugged into dc outlet like a cell phone charger left plugged in, etc. is not draining your battery overnight or over time when parked.

Sounds like the battery is no good (not holding a charge)

Your battery tried to get back to 12+ volts the night the lights were left on, and that is very hard and often fatal to a conventional battery-the fact that you got it started with a jump and it started later (even though it took longer to start) is a good thing-but your alternator will not properly 'charge' your battery, it should be put on a slow charger ( amp) to properly bring it up to what it is capable of-a deep cycle battery can be fully discharged hundreds of times without major damage, but a conventional battery can only go through this a few times. Charge it up, then if you still have problems up, get the battery load tested (this sees how fast it can recover from a measured load, good for determining how good the battery is). Remember too, kyour alternator is sensitive to how hard it has to work to get the battery up to level-so a deficient battery could cause more expensive problems unless you take care now.

charge it properly, get it tested.

Try jump starting it. I suspect your battery is dead. After time they don't hold a charge as deep as they once did. Have it load tested to verify. Your lights and other options don't draw nearly what your starter needs.

Are you getting the readings off the battery using a meter or of a dash display. -- check/clean battery connections, do load test on battery, and check/clean ground cable to chassis. Hope this helps

This sounds like a low voltage issue. Check the system voltage while running, need 13.8 to 14.6 or so. Have the battery terminals cleaned and load test the battery. If the battery voltage drops too low during startup, that can cause the clock to loose it's time.

Yeah, there is a draw. Disconnect the negative terminal and put test light or Volt meter in series, and then disconnect stuff, one thing at a time. when you get the offending item light will not longer light. Pull interior light fuse, as that is misleading when you open a door during this test.

First item to disconnect is the alternator, it has diodes that fail and sap power pretty quickly. Diodes can fail without giving any dash indication.

cold does strange things.. check battery health with load test... check cables especially grounds... test for parasitic leak of electrical by inserting a test light between battery ground post and cable .. only faint light for radio and comuter should exist ..a bright light means a draw and should be discovered by removing fuses one at a time til located ...good luck