Yes, the smartphone takes power from the socket when it is powered.
However if you check the demand of the smartphone in W and AH then you will find it is very small compared to the car battery capacity and the alternator output. Check the units: car battery in AH and smartphone mAH...
If you have a car battery going flat it is due to one, or both, of two ...
Your car has an electric fan at the radiator and the fan didn't engage when it had to.
Or it didn't engage its higher speed when it had to.
The result: your engine mildly overheated.
What you have to check:
Why the fan didn't start? Loose wirings, burnt fuse, dead relay(s), whatever?
Signs of oil or coolant leaks.
Signs of oil in the coolant or coolant in ...
What happened exactly? Was it that keeping it on 4000 rpm for 5 minutes caused overheating and this had nothing to do with the connected battery, or did battery have something to do with it?
You were holding the engine at (relatively) high RPM for a sustained period of time with essentially no air flow over the radiator. That being the case it was going to ...
Yes, hooking a deeply discharged battery to another good battery in parallel is a good way to revive the discharged battery. One reason that the discharged battery may not be charging is many battery charges have an internal safety mechanism that prevents charging a deeply discharged battery. This is because it wants to avoid potentially charging a battery ...
I would look for a ground problem. Check your battery terminals and clean them. The fact that it happen intermittently suggest a loose connection. next time it is happening, before turning on the key, turn on everything you can. headlight on high. brake lights, see if it fails. also try turning key on/off a few time, might be the ignition switch failing,...
I would modify the criteria used for jump starting cables. These are important characteristics:
This determines the amperage and how big engine the cables can start and how rapidly they can charge the flat battery, so no need to specify amperage and engine capacity separately. A given mm2 of copper always conducts the same. There is ...
Known design fault , the security alarm drains the battery ALL THE TIME.
I am not qualified , i am passing on information from my best friend, he bought this vehicle from new and spent three miserable years before jeep owned up to the fault.
good luck , great car shitty security system.
A relay isn't 'necessary' as such, it would operate just fine through the steering wheel switch in most cases, but a relay is designed in the circuit for many reasons.
Voltage drop - running a wire from the battery into the steering wheel and back out to the horn is a long path, and causes voltage drop from the resistance in the length of wire. Voltage drop ...
Tested by auto electrician. POWER DISTRIBUTION BOX CONTROL MODULE was bad that takes the power from the battery and passes on. Not sure how exactly is this module different from the fuse box next to wheel well.
The problem was an unplugged cable under the scuff plate in the trunk.
It's quite easy to take out, you just have to remove the trunk floor and pull that part.
There's only 1 cable connected to that little panel and it wasn't connected.
Make sure you hear the click when you connect it.