Can you recharge a dead battery by idling?
“Starting the engine draws 100 to 130 amps, and idling the car for 15 minutes might put back three or four amps,” Brown-Harrison says. “If you’re idling only for 15 to 20 minutes, the battery never truly gets recharged. So each time you start and leave it to idle, the charge will get lower and lower and lower.”
Can you disconnect battery while car running?
The only electrical circuit that can protect your cars electric circuitry when you disconnect a battery is the one in your brain. DO NOT DISCONNECT WHEN THE ENGINE IS RUNNING!!! If the engine’s already running, disconnecting the battery will still keep the engine running.
Why is the battery on my bike not charging?
The battery is not charging when it is installed on the bike. The battery will not take a charge, even when using an external charger. The battery seems to be charging fine, but will not hold a charge over time. At first sight, these scenarios seem very similar.
How to Idle re-learn after battery disconnect?
If the needle dips to 500rpm or lower then the ECU isnt sending the injector pulses quickly enough to hold the revs at the normal idle level. 6) If you miss the symptoms in the first week or so after a battery disconnect then the idle correction still keeps learning – as does the long term trim correction.
What causes a car battery to stop charging?
Here are the most common causes when the battery won’t charge, even when using an external battery charger: 1. The battery is old, or it has gone bad No battery lasts forever, and at some point, all batteries will stop working. 2. Low fluid levels in the battery
What should I do if my smart charger wont charge my battery?
Take your battery to your smart charger and hook it up again. The battery should have enough of a superficial surface charge to trigger the battery charger to start the charging process! If it doesn’t work, you can try the process a few more times before you give up.
Do you have to relearn idle when a battery is disconnected?
Many newer cars with powertrain control modules (PCMs) have to relearn engine idle after a battery is disconnected. The removal of electrical power from the engine erases idle memory from the PCM, the computer where it is stored.
Is it bad to let your car idle to charge its battery?
Idling for too long can cause problems for your car also. It will contaminate the car’s oil faster, which offers less protection for your engine. The increased amount of exhaust particles will impact the performance, emissions and result in component failure. Although in some cases you can, it is best to avoid idling your car to charge its battery.
What to do if your laptop battery is idle and not charging?
Re: Laptop battery on idle, plugged in not charging. Hi aLightBulb, Follow below mentioned steps which can isolate the issue: Unplug the AC adapter from the wall, and from the portable computer, for five to ten seconds. Make sure the AC adapter is unplugged long enough for the LED on the AC Adapter to go out altogether.
What happens if your car battery stops charging?
Once the vehicle is up and running, the alternator can take the ability to run your car’s electrical system and maintain battery levels. Should anything happen to your alternator, if it stops providing a charge to the battery, your car battery can die while the engine is still running.