What is the normal ampere for battery leakage?

[SanIvan]

Car normal leakage current is generally 45 milliamperes. Cars have dark current, which falls within the normal leakage range. Here are specific details about battery leakage: Testing: Loosen the screw of the battery negative connection wire. Then, using the milliampere range of a multimeter, connect the negative black wire of the multimeter to the battery negative terminal and the positive red wire to the battery connection wire head to read the dark current value. Normally, this current should not exceed 90 milliamperes. If the dark current reading exceeds 90 milliamperes or even reaches several hundred milliamperes or more, it indicates leakage in the car anti-theft device circuit or other circuits in the vehicle, which should be checked one by one.

[VonElaina]

I've been driving for over twenty years, and the most annoying issue is battery drain, which I've dealt with several times. Normally, the static leakage current should stay within the range of 20 to 50 milliamps, which is considered a safe value. If it's too high, say over 70 milliamps, the battery might be completely drained overnight, leaving you unable to start the car in the morning. I personally use a multimeter to test it: first, make sure the doors are closed and the engine is off, then wait ten minutes for the system to go into sleep mode; next, disconnect the negative terminal of the battery; set the multimeter to the current measurement mode and connect it between the negative cable and the battery post; if the reading is below 50 milliamps, it's considered normal. If it's higher, it could be due to the anti-theft system or an aftermarket dashcam secretly consuming power. It's advisable to test it regularly, especially during seasonal changes, to avoid being stranded on the road and disrupting your trip.

[EverlyMarie]

I've been repairing cars for over twenty years and have seen numerous faults caused by battery leakage. The normal leakage current ranges between 20 to 50 milliamperes, which is quite minimal and maintains the vehicle's standby power consumption at this level. If the measured current exceeds 80 milliamperes, there's likely an issue, such as a short circuit or leakage from aftermarket equipment. During testing, I most commonly use a multimeter: after turning off the engine, disconnect the battery's negative terminal and connect the meter to measure the current; a reading within 50 milliamperes is generally safe. If it exceeds this value, the cause must be investigated—perhaps the alarm consumes too much power or the wiring is aging. The preventive method is to regularly maintain and check for power leaks, a simple and effective way to extend the battery's lifespan.

[SanAnastasia]

I prioritize driving safety, as a severely leaking battery once left my car stranded. The generally accepted normal range is 20 to 50 milliamps - higher values can drain the battery and cause starting failures. Testing recommendation: Use a multimeter to check; readings below 50mA are acceptable. Potential causes may include additional equipment like GPS or audio systems. Early detection and repair ensure safety.

[ElisaFitz]

I am familiar with electrical principles, and a small leakage current is necessary to protect the vehicle. Normally, it should be between 20 to 50 milliamps, including minimal power consumption from components like the clock. If it exceeds 50 milliamps, there might be a short circuit. During testing, disconnect the negative terminal and use a multimeter—a low reading indicates normal conditions. Regular testing helps avoid risks.

[LeReagan]

I'm a DIY enthusiast and often troubleshoot battery drain issues myself. A normal current ranges from 20 to 50 milliamps; higher values can cause starting difficulties. I use a multimeter to test: disconnect the negative terminal and connect the meter. If the reading is high, check if devices like dash cams are properly turned off. A simple check can save a lot of trouble.