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Discuss Car battery testing in the Auto Electrician Forum area at ElectriciansForums.net

magnoliafan89

Regular EF Member
Have a car battery and wantedto know if it was any good. Got my fluke tester and set it to volts and put it across positive and negative...first battery had 0 volts and the second battery had 6 volts. Did i test these properly?
 

Pete999

Forum Mentor
Have a car battery and wantedto know if it was any good. Got my fluke tester and set it to volts and put it across positive and negative...first battery had 0 volts and the second battery had 6 volts. Did i test these properly?
Got an ACT Battery tester for sale if you're interested
 

James the Spark1976

electricity is it real or just magic?
Electrician's Arms
Have a car battery and wantedto know if it was any good. Got my fluke tester and set it to volts and put it across positive and negative...first battery had 0 volts and the second battery had 6 volts. Did i test these properly?
They could both do with being charged before testing.
 

Charlie_

Electrician's Arms
Would have expected you to get 12 volts?
What condition are they in, dried up?
Best to just drive to a halfords or anywhere that offers free battery tests.
 

Jim_e_Jib

Regular EF Member
If they are 12V lead acid batteries and reading 0V and 6V, it's likely they are in a very sorry state and could be beyond redemption. Lead acid batteries tend not to like being discharged too far for too long and for a 12V battery, discharging to anything below around 10V can cause damage.

As above, a trip to Halfords or somewhere similar to get them tested and checked over might be the best bet.

Take care if attempting to charge them!
 

lozarus

EF Member
Be aware that a "proper" battery tester is needed to do a proper load test on it. A naff battery, once charged, can still show 12-14v but will drain very fast. Sounds like your batteries are flat - but even charged the condition would be unknown.
 

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