Battery keeps going dead (what to test before replacing)

In this video I will show you the tests you need to perform on a car with a dead battery. The three main things we must determine:
1. Does the battery need to be replaced?
2. Is the alternator charging correctly?
3. Is there a parasitic drain on the system with the ignition off?

When you have a car that is only driven once a month combined with a cold climate, special attention must be made to the battery drain test. (parasitic drain).

Symptoms
battery keeps going dead (1 year old battery)

Fix
replace battery

Tests shown
how to test a charging system
how to be sure the alternator diodes are okay
how to test a battery
how to test for a parasitic drain (battery drain)
what is the acceptable current flow from a battery with the ignition off

Tools used
Deluxe DMM w/Amp Shutters (AES# esi-582)
https://www.aeswave.com/cart.php?m=af...
NOCO GB70 Jump Starter
http://amzn.to/2dWixwt

Playlist
Starting, Charging and Battery system problems
   • Starting, Charging and Battery system...  

Related videos
How to locate a battery drain (parasitic drain test) Part 1
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How to locate a battery drain (parasitic drain test) Part 2
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Bad Alternator Diode causing transmission/speedometer problems
   • Bad Alternator Diode causing transmis...  

Parasitic Drain Tests (SD Premium videos)

How to test for a battery drain problem (parasitic drain test) - Lexus GS 300
   • Видео  
Alternator parasitic drain classroom review (Lexus GS 300 Case Study)
   • Видео  
2011 Caravan Intermittent No Crank, No Start, Dead Battery (TIPM Problems)
   • Видео  

For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.
Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium https://www.scannerdanner.com/join-sc... There is a 14 day free trial.
On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!

Disclaimer:
Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.