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> How to see whether need to change car battery, CCA

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TSGTA5
post May 13 2019, 09:11 PM, updated 6 months ago

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Hi all sifus,

That day I serviced my car, the foreman told me my car battery CCA is 338/580.

580 being the capacity, and 338 is the measured CCA.

So my question is, below what level of CCA that I should start worrying about changing my car battery?

Thanks all for your inputs!
SleeplessEyes
post May 13 2019, 09:25 PM

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When your engine starter sounds slower than usual, prepare cash for a new battery.

CCA is also good measurement but you can use a Voltmeter to check. Because CCA measurement device is abit costly so you can measure with a plug in ciggy Voltmeter or multimeter

anything 12.5V and below before switching on anything means the battery is on its way our.
fireballs
post May 14 2019, 01:19 AM

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cca is a measurement of battery internal resistance. not 100% accurate though.
v=i x r, know r and v, then can get I


better measurement is the meter with heater load.


Valentino46
post May 14 2019, 02:14 AM

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QUOTE(SleeplessEyes @ May 13 2019, 09:25 PM)
When your engine starter sounds slower than usual, prepare cash for a new battery.

CCA is also good measurement but you can use a Voltmeter to check. Because CCA measurement device is abit costly so you can measure with a plug in ciggy Voltmeter or multimeter

anything 12.5V and below before switching on anything means the battery is on its way our.
*
12.5v need standby change battery....got onot bro,most sources i studied suggest open circuit 12.5v still at 80%+- capacity,normally if connected to car there'll be some parasitic load even when you turn off the switch but if still can get 12.5v very ok lor,fully charge voltage is typically 12.6 to 12.7v after 30 minute rest without residual voltage
the recommended way of using multimeter to check battery health is read the voltage fluctuation of the battery during startup and under load,the voltage should not dip under certain voltage,depending on who you ask,some say 10v some say 7.2v

user posted image

This post has been edited by Valentino46: May 14 2019, 02:20 AM
fireballs
post May 14 2019, 10:16 AM

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https://www.lazada.com.my/products/foxsur-1...s636750601.html

hmm i always thought its very expensive.
mushigen
post May 14 2019, 10:20 AM

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I use this battery tester: https://www.lazada.com.my/products/digital-...Bl27NX&search=1

It also tells you the state of health of the battery, state of charge, CCA, resistance.
6UE5T
post May 14 2019, 11:18 AM

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I bought those power bank jump starter for only around rm90. So I can really wait until my battery cannot start and need to use that jump starter then change battery.
Roman Catholic
post May 14 2019, 11:36 AM

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QUOTE(6UE5T @ May 14 2019, 11:18 AM)
I bought those power bank jump starter for only around rm90. So I can really wait until my battery cannot start and need to use that jump starter then change battery.
*
Bro., if you don't mind could you tell me where you got this Power Bank Jump Starter ? Thank you very much.
6UE5T
post May 14 2019, 12:16 PM

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QUOTE(Roman Catholic @ May 14 2019, 11:36 AM)
Bro., if you don't mind could you tell me where you got this Power Bank Jump Starter ? Thank you very much.
*
Bought from Lazada, works very well as 1 full charge can jump start more than 5 times even for totally dead battery.
TSGTA5
post May 14 2019, 01:16 PM

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QUOTE(6UE5T @ May 14 2019, 12:16 PM)
Bought from Lazada, works very well as 1 full charge can jump start more than 5 times even for totally dead battery.
*
Is it safe to keep inside the car?
WaCKy-Angel
post May 14 2019, 01:50 PM

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QUOTE(6UE5T @ May 14 2019, 12:16 PM)
Bought from Lazada, works very well as 1 full charge can jump start more than 5 times even for totally dead battery.
*
how long can the battery tahan if just keep in car? if fast discharge also no use unless u hardworking charge it often.
coz not often car battery die right
amscouzach57
post May 14 2019, 02:32 PM

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QUOTE(WaCKy-Angel @ May 14 2019, 01:50 PM)
how long can the battery tahan if just keep in car? if fast discharge also no use unless u hardworking charge it often.
coz not often car battery die right
*
It works as a power bank as well. Can charge your smartphone.

So frequent use means frequent charging
rodniel
post May 14 2019, 02:46 PM

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I use a voltmeter also. If the reading is around 12.6V when engine is off, the battery is still healthy.
Roman Catholic
post May 14 2019, 02:47 PM

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QUOTE(GTA5 @ May 13 2019, 09:11 PM)
Hi all sifus,

That day I serviced my car, the foreman told me my car battery CCA is 338/580.

580 being the capacity, and 338 is the measured CCA.

So my question is, below what level of CCA that I should start worrying about changing my car battery?

Thanks all for your inputs!
*
I've seen that some MF Batteries has a coloured indicator on top of the battery itself. Changes of colour status according to the label would & should indicate when the battery should be changed.

However since I do not use MF Batteries in all my vehicles, I cannot verify if that Coloured Indicator is accurate or otherwise.

As for the CCA, were you shown a print-out test result slip or were you verbally told of the figures only ?

This post has been edited by Roman Catholic: May 14 2019, 02:48 PM
Roman Catholic
post May 14 2019, 02:51 PM

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QUOTE(rodniel @ May 14 2019, 02:46 PM)
I use a voltmeter also. If the reading is around 12.6V when engine is off, the battery is still healthy.
*
A battery may retain sufficient Volts to show that it's a "good" battery and still be unable to crank the car.

Example there's a battery with 2 defective cells and yet the battery gives a reading of 12.7V which should be a "good" battery but while on a Analyzer it states Replace Battery.

This post has been edited by Roman Catholic: May 14 2019, 02:59 PM
andrekua2
post May 14 2019, 03:11 PM

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Not sure what car you are driving but for me driving Korean cars, I would say a huge difference when starting car on a brand new battery vs weak battery.
Roman Catholic
post May 14 2019, 03:41 PM

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QUOTE(andrekua2 @ May 14 2019, 03:11 PM)
Not sure what car you are driving but for me driving Korean cars, I would say a huge difference when starting car on a brand new battery vs weak battery.
*
It should the same for all cars. A fully charged battery will always be better than a weak battery no matter which car.
TSGTA5
post May 14 2019, 03:44 PM

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QUOTE(Roman Catholic @ May 14 2019, 02:47 PM)
I've seen that some MF Batteries has a coloured indicator on top of the battery itself. Changes of colour status according to the label would & should indicate when the battery should be changed.

However since I do not use MF Batteries in all my vehicles, I cannot verify if that Coloured Indicator is accurate or otherwise.

As for the CCA, were you shown a print-out test result slip or were you verbally told of the figures only ?
*
It's mentioned on the service note.

QUOTE(andrekua2 @ May 14 2019, 03:11 PM)
Not sure what car you are driving but for me driving Korean cars, I would say a huge difference when starting car on a brand new battery vs weak battery.
*
I am driving Korea car too, rio sedan hehe. Using Rocket battery now.
Roman Catholic
post May 14 2019, 03:50 PM

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QUOTE(GTA5 @ May 14 2019, 03:44 PM)
It's mentioned on the service note.
I am driving Korea car too, rio sedan hehe. Using Rocket battery now.
*
If the service note looks similar or something close to this, then yes.

user posted image
SleeplessEyes
post May 14 2019, 04:04 PM

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QUOTE(Valentino46 @ May 14 2019, 02:14 AM)
12.5v need standby change battery....got onot bro,most sources i studied suggest open circuit 12.5v still at 80%+- capacity,normally if connected to car there'll be some parasitic load even when you turn off the switch but if still can get 12.5v very ok lor,fully charge voltage is typically 12.6 to 12.7v after 30 minute rest without residual voltage
the recommended way of using multimeter to check battery health is read the voltage fluctuation of the battery during startup and under load,the voltage should not dip under certain voltage,depending on who you ask,some say 10v some say 7.2v

user posted image
*
Well I'm not saying you are wrong either. Early I quoted 12.5V and below is because as a safety precaution. But after reading some websites, some claims that anything 12.4V and below have to standby.

No one likes a sudden dead battery surprise.

This is because now my Axia, being just a small car with small engine, every morning I check the volts and its around 12.5.
And the starter sounded slower together with the dashboard light is kinda weak , but thankfully it still starts up.
but once warms up, the every subsequent start up it shows up around 12.8V.

Though it's like a early warning. 2.5years and 60K mileage I'm surprised the battery still holds up. Panasonic OEM battery.
But ill get it change soon.

I've done also load test as you mentioned , meaning I have to disable the Ecu and/or ignition coil at the fuse box.
Done that, so far it's showing around 10V but that's with a warmed up engine. Didn't try with a cold engine.

This post has been edited by SleeplessEyes: May 14 2019, 04:06 PM

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