Watch as our experts give you best practice advice and invaluable tips as they walk you through both common and complex jobs.

From servicing to inspections and repairs, you’ll find the guidance you need in our library of videos below.

How to page header image
Mechanic checking battery health using Delphi Technologies Diagnostic tools.
1 min read

How to perform a battery health check

Share Resource:
Batteries Vehicle Electronics & Engine Management How to Technicians 1 min read

Resource Highlights

We’ll take you through how to use a diagnostic tool to check the health of a vehicle’s battery. 

Why do I need to perform a battery health check? 

Some manufacturers insist on a battery health check as part of a vehicle’s annual service to maintain the warranty, others to extend it. 

How do I plug in the diagnostic tool? 

Find the vehicles OBD socket and plug in the Delphi DS180 or DS480 diagnostic tool.  

How do I make sure the diagnostic tool is set to the right vehicle? 

Enter the vehicles registration or VIN on the diagnostic tool to bring up the diagnostic data on it. Then, go to the EV control module and from here click through to the HV-battery regulation section. You can now connect to the vehicle and perform the diagnostic check. 

How do I test the battery? 

Choose to carry out the ‘Battery state of health’ test. Once you’ve selected it, simply click ‘Play’ and it will be performed.  

What information does the test show me? 

You can see all the individual battery cells in the car, the voltage they are all showing and the reference voltage that they should be within.  

where to buy

Find out where to buy Delphi parts

where to repair

Find your nearest Service & Diesel Centres



Fill out your details to hear more from our experts and get the latest updates from Delphi.

Select your Region