Battery drain.

**Nikhoy24** · August 5th, 2018 07:57 PM

yes ang hirap! mobile phone and bluetooth speaker ang pansamantagal

Originally Posted by dr. d

bring the car to a proper auto electrician, where it can be properly trouble-shot.
personally, i find it difficult to drive around without in-car entertainment and lights.
your cigarette lighter is probably also out.

**techglimpse** · December 28th, 2018 07:08 PM

Originally Posted by red_one

I use in-car voltmeter for monitoring voltages and have an automatic car battery charger desulfator for maintaining battery health at home.

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ano po ba dapat ang reading ng voltage nito? before and after magstart?

**red_one** · December 28th, 2018 07:12 PM

Originally Posted by techglimpse

ano po ba dapat ang reading ng voltage nito? before and after magstart?

Before start = 12V and up.
After start = 14V and up.

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**istan** · December 28th, 2018 08:36 PM

When cranking, pag umabot ng 7V, palit ka na.

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**sirkosero** · December 28th, 2018 09:41 PM

Originally Posted by istan

When cranking, pag umabot ng 7V, palit ka na.

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Actually, 9v lang palit kanna dapat. At 7v, swerte mo na magstart pa yan

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**istan** · December 28th, 2018 10:13 PM

Sa cranking lang naman, bumabalik sa 12V agad pag nag start na. Ü

Normal start sa akin 9V.
May scangauge kasi ako.

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**sirkosero** · December 28th, 2018 11:09 PM

Originally Posted by istan

Sa cranking lang naman, bumabalik sa 12V agad pag nag start na. Ü

Normal start sa akin 9V.
May scangauge kasi ako.

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Ah. You use them obd testers. Afaik there are some delay in the reading there.

I use fluke true rms multi tester that records the highest and lowest voltages down to in millivolts and time recording.

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**ninjababez** · December 29th, 2018 06:08 AM

Originally Posted by istan

Sa cranking lang naman, bumabalik sa 12V agad pag nag start na. Ü

Normal start sa akin 9V.
May scangauge kasi ako.

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actually maski 9v ang binaba pag starting, alanganin nag condition ng battery mo bro.
try mo muna i charge batt to full, then remove float charge; test crank ulit

**dr. d** · December 29th, 2018 09:27 AM

Originally Posted by techglimpse

ano po ba dapat ang reading ng voltage nito? before and after magstart?

before starting, that's your battery voltage.
after starting, and with the engine running, you are now measuring your alternator's output voltage.

**12vdc** · December 29th, 2018 11:32 AM

Originally Posted by istan

Sa cranking lang naman, bumabalik sa 12V agad pag nag start na. Ü

Normal start sa akin 9V.
May scangauge kasi ako.

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Sira ang charging system/ alternator mo.

After starting, Vo should be at charging voltage = 13.8V.

Kung 12V yan at cranking at 7Vdrop, battery lang ang tumatrabaho.

Have your alternator checked asap if you don't want to ruin the battery.