DIY: Testing your car battery

Holyghost · 9th January 2024, 13:49

Quote:

Originally Posted by robimahanta

Checked the 3 series AGM Battery today. It is 3 years old and rated at 850CCA 92aH. Initially I had tested it via the jump start points in the engine bay and it gave some erroneous readings. Today I connected the tester directly to the battery in the boot and the readings seem to fine.

CCA is 800 and SOH at 97%

Can it detect/differentiate between the Normal Lead Acid and AGM batteries?

Romins · 13th January 2024, 15:53

Quote:

Originally Posted by Jeroen

Correct. In addition, if the level of the electrolyte is low it will also show.

I went to a local electrical shop and he did a specific gravity test for each of the cells. He also checked voltages at different situations and confirmed everything looks good.

Redex · 14th January 2024, 08:27

Not come across a tester that detects battery type yet. AGM, Flooded , Lead Acid etc etc is information you select on the tester, along with CCA rating before beginning the test.

Jeroen · 14th January 2024, 17:01

Quote:

Originally Posted by Redex

Not come across a tester that detects battery type yet. AGM, Flooded , Lead Acid etc etc is information you select on the tester, along with CCA rating before beginning the test.

Agree, I would not know how you get a device to recognize which type of battery it is hooked up to.

Part of the challenge I had, was to figure out which type of battery was installed in my various cars. you can't always tell from the outside and more often than not the type of battery was not mentioned on the battery itself. In fact, the type wasn't even mentioned in some of the websites ai visited to find out.

Jeroen

Redex · 16th January 2024, 09:13

Quote:

Originally Posted by Jeroen

Agree, I would not know how you get a device to recognize which type of battery it is hooked up to.

Part of the challenge I had, was to figure out which type of battery was installed in my various cars. you can't always tell from the outside and more often than not the type of battery was not mentioned on the battery itself. In fact, the type wasn't even mentioned in some of the websites ai visited to find out.

Jeroen

All it would take is universal agreement from all manufacturers to use a barcode,
QR code or an RFID tag. Never going to happen

14th January 2024, 08:27	#18
Redex BANNED Join Date: Jul 2019 Location: Gt.Bentley U.K. Posts: 191 Thanked: 572 Times Infractions: 0/2 (12)	Re: DIY: Testing your car battery Not come across a tester that detects battery type yet. AGM, Flooded , Lead Acid etc etc is information you select on the tester, along with CCA rating before beginning the test.
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