Does a voltmeter (using the cigarette lighter plug) help us determine the health of the car battery?

[benchph1]

Not really useless. I have one installed on my car. One morning it read 11.8 volts. And true enough, may hesitation sa pag start.

Was supposed to go straight to a motolite dealer to buy a battery, dunno why i stupidly detoured to fillup with gas. Ayun ayaw na magstart after ko magpa karga. Good thing the gas station had a battery booster device of some sort.


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[granro01]

Suggest that you invest on a good voltmeter ( not expensive nowadays) and a good battery charger specially those using automatic transmission to avoid hassle on the road. Maintain your battery charge at least once a month and monitor your voltage while charging. You will notice amperage going down and voltage going up as it approach full charge. I normally keep the voltage between 14.5 to 15 V for a full charge battery.

There was a time when the car battery of my Innova would just die without some prior symptoms (or I might have not have noticed them) and since my ride has automatic transmission so talagang mahirap. Now does a voltmeter (using the cigarette lighter plug) help us determine the health of the car battery?

[Athrunzala]

Suggest that you invest on a good voltmeter ( not expensive nowadays) and a good battery charger specially those using automatic transmission to avoid hassle on the road. Maintain your battery charge at least once a month and monitor your voltage while charging. You will notice amperage going down and voltage going up as it approach full charge. I normally keep the voltage between 14.5 to 15 V for a full charge battery.

Tanong lang okay ba yung mga Ctek Battery Charger? Do you have to remove the car battery from the car before charging it? Can battery charging be done while the battery is inside the car trunk or is it dangerous?

[kunanteng]

Sa brand new fortuner ko 1 year lang bumigay na battery. Parang generic lang kasi. Nagpalit ako motolite 2 years ko na gamit so far so good. Battery life should be 4-5 years.

[Walter]

CTek battery chargers are good ... They're on the expensive side already ... You just connect it to the battery in the car ... No need to remove the battery ... Just don't start the vehicle ... You can also look for generic smart car battery chargers on olx lazada or aliexpress ... Make sure it's "smart" meaning it trickle charges when almost full, protects from overcharging, and detects reverse polarity ...

Normal battery life in this country is 2-3 years ...

[Athrunzala]

CTek battery chargers are good ... They're on the expensive side already ... You just connect it to the battery in the car ... No need to remove the battery ... Just don't start the vehicle ... You can also look for generic smart car battery chargers on olx lazada or aliexpress ... Make sure it's "smart" meaning it trickle charges when almost full, protects from overcharging, and detects reverse polarity ...

Normal battery life in this country is 2-3 years ...

Thanks for the information that there is no need to remove the battery from the Car trunk. But do we have to remove the 2 battery terminals (the positive and negative terminals) before attaching the the 2 alligator clips from the CTek charger?

[istan]

I have scangauge 2. It connects to the obd port and gets power there. It reads out voltage while cranking. Sooo. Obd has power during cranking.
Maybe elm327 with Torque app can help read it out during crank?

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[Walter]

If your battery is in the trunk or under the seat, there's usually a convenience connector in the engine bay ...

[kisshmet]

^if you want real time voltage reading use an oscilloscope

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[12vdc]

When starter cranks, Vdrops as low as 7V that most electronics can't operate on that level including the voltmeter. You may use
a stand-alone voltmeter for more accurate reading or the appropriate battery tester that could operate from 5V up to 24V.

[ninjababez]

When starter cranks, Vdrops as low as 7V that most electronics can't operate on that level including the voltmeter. You may use
a stand-alone voltmeter for more accurate reading or the appropriate battery tester that could operate from 5V up to 24V.

yun luma kong voltmeter bro, kita ko drop ng voltage while cranking (3k battery at 11.9v) .. lowest i read nga lang is 8.xx volt dropped from and nagstart naman yung vios.
ganito itsura ..


eto yun last ko .. nag 00.00 volts while cranking ..



eto plano ko ipalit, sana ganun din PLUS may qc 3.0 charging na ..

[oj88]

^Naka rekta ba cig lighter plug mo sa battery?

Alam ko temporarily nawawala power sa cig lighter pag nasa “Start” ang susian.

[ninjababez]

^Naka rekta ba cig lighter plug mo sa battery?
Alam ko temporarily nawawala power sa cig lighter pag nasa “Start” ang susian.

sa stock cig port lang bro

[SoleusBB]

Teka, question na rin.

Perhaps using an old fashioned battery hygrometer will give a better indication of battery health? Medyo tedious nga lang, kasi you'll have to draw battery acid into the tube for every cell.

I'm not sure if applicable nga lang ito sa sealed type na maintenance free... but I think some maintenance free batteries have covers designed to be pried off with a flathead screwdriver.

[oj88]

If OBD can get data while cranking it means the port is still powered.

It reminds me in the 80's when we used the digital storage scope to capture and record the pulses of an equipment in order for us to adjust it later to the correct peak to peak voltage required.

There's a B+ pin on the OBD port that is always connected to the battery. That's why it does not shutdown when you crank the engine.

[12vdc]

yun luma kong voltmeter bro, kita ko drop ng voltage while cranking (3k battery at 11.9v) .. lowest i read nga lang is 8.xx volt dropped from and nagstart naman yung vios.

As OJ have mentioned, the starter switch relay have an accessory cut-off during cranking but aside from that there is a voltage drop in the battery terminals itself. It will depend on how your plug-in voltmeter was designed, some have large capacitor that delays the drop, others get cut-off immediately. The most accurate to tap a voltmeter is on the battery poles or the B+ of the OBD2 port or the supplyV of the relay/ fuse box. Below direct tap on battery of crdi and non-crdi diesel while cranking.

[Flipo]

I have scangauge 2. It connects to the obd port and gets power there. It reads out voltage while cranking. Sooo. Obd has power during cranking.
Maybe elm327 with Torque app can help read it out during crank?

Sent from my ONEPLUS A5000 using Tapatalk

^if you want real time voltage reading use an oscilloscope

Sent from my SM-G532G using Tapatalk

If OBD can get data while cranking it means the port is still powered.

It reminds me in the 80's when we used the digital storage scope to capture and record the pulses of an equipment in order for us to adjust it later to the correct peak to peak voltage required.