Battery Draining? How To Test For Parasitic Draw with a Multimeter

Опубликовано: 28 Август 2026
на канале: G Auto Repair
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Do you wake up to a dead car battery every morning? Before you buy a new battery or alternator, you need to check for a "Parasitic Draw." In this video, I show you how to use a cheap multimeter to find what is draining your battery while the car is off.

⚠️ CRITICAL STEP: You must trick the car into thinking the doors are closed so the computer modules go to sleep! I show you how at 02:14.

Steps Covered:
00:00 - Intro: The "Dead Battery" Mystery
02:14 - Pro Tip: Latching the doors to sleep the modules
03:19 - Setting up the Multimeter (Amps setting)
05:41 - The "Wake Up" Period: Why you see high amps at first
07:53 - Watching the amps drop (The waiting game)
10:09 - What is a "Normal" draw? (0.050A or less)
11:25 - Final result: No parasitic drain found

Tools Used:

Standard Multimeter (set to 10A DC)
Screwdriver (for door latch trick)
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