Stupid question about dead car battery (car wouldn't start)

**baludoy** · January 19th, 2017 11:18 AM

^ i have something similar to that although i have yet to use it. siguro mga para sigurado kelangan ko i-disconnect ang negative bago i-charge ang batt

btw, ano ba dapat reading sa volt meter (more or less) para malaman na medyo mahina na ang battery? maganda pa naman kasi ang cranking. tnx

**Janemar** · January 19th, 2017 11:29 AM

Originally Posted by baludoy

^ i have something similar to that although i have yet to use it. siguro mga para sigurado kelangan ko i-disconnect ang negative bago i-charge ang batt

btw, ano ba dapat reading sa volt meter (more or less) para malaman na medyo mahina na ang battery? maganda pa naman kasi ang cranking. tnx

Okay lang icharge kahit nakakabit pa sa makina kahit i switch ON/accesories ok lamg din especialy if good brand car charger gamit mo... Wag mo lang i-crank starter at masira charger. I do this when I program the ecu on my 2016 everest. Matagal process and para di macorrupt data transfer during programming, due to low batt, naka connect lagi battery charger ko.

You may want to charge if reading is 12.5 and below. Do your reading first thing in the morning pag gising mo para accurate ung value at di makuha ang surface charge.

**innova2013** · January 19th, 2017 12:26 PM

Originally Posted by baludoy

^ i have something similar to that although i have yet to use it. siguro mga para sigurado kelangan ko i-disconnect ang negative bago i-charge ang batt

btw, ano ba dapat reading sa volt meter (more or less) para malaman na medyo mahina na ang battery? maganda pa naman kasi ang cranking. tnx

depende din ata sa engine. yung sa corolla ko dati, kapag 12V, hirap na paikutin starter.

sa hilux naman, 12.2V pa lang ayaw na. haha

**lowslowbenz** · January 19th, 2017 01:20 PM

I find it more proper to dismount the battery and charge it on a bench, or counter top. I have an old Bosch Battmax battery charger.

With the battery out, I have this chance of cleaning debris accumulation on and below the battery tray, and on the areas directly below the battery. Keeps everything neat and tidy.

**sirkosero** · December 8th, 2016 08:56 PM

Yung sakin, tanggal lang negative ng kotse...

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**red_one** · January 19th, 2017 01:41 PM

Some cars medyo nakatago ang battery. That is you need to remove some parts pa to access battery. Example, yung sa ASX. My charger can work with battery connected to the car so no need to remove pa. This is quite common to automatic battery chargers.

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**red_one** · January 19th, 2017 04:28 PM

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**WallyWest** · February 4th, 2018 08:00 PM

My battery can't start my car anymore. Happened just 2 hours ago. I was able to drive home with the help of my powerbank with jumpstart function.

I'd rather not go out tonight to get a new battery. My plan is to start it up tomorrow morning again with the powerbank then drive over to a battery dealer. Right now, the car is parked at home with alarm on and doors locked. Is there any chance that the battery will totally drain overnight because of the alarm being left on? If it totally drains, will I still be able to jumpstart with a powerbank?

By the way, nag-check engine bigla after kong i-start. Side effect ba ito ng pag-jumpstart?

**dr. d** · February 13th, 2018 09:35 AM

Originally Posted by WallyWest

My battery can't start my car anymore. Happened just 2 hours ago. I was able to drive home with the help of my powerbank with jumpstart function.

I'd rather not go out tonight to get a new battery. My plan is to start it up tomorrow morning again with the powerbank then drive over to a battery dealer. Right now, the car is parked at home with alarm on and doors locked. Is there any chance that the battery will totally drain overnight because of the alarm being left on? If it totally drains, will I still be able to jumpstart with a powerbank?

By the way, nag-check engine bigla after kong i-start. Side effect ba ito ng pag-jumpstart?

your battery can't hold its charge for long periods (longer than, say, 15 minutes) anymore, even if it is not connected to anything.
patay na po siya.
you can probably still start the car, with the use of your powerbank.

**WallyWest** · February 13th, 2018 10:51 AM

Originally Posted by dr. d

your battery can't hold its charge for long periods (longer than, say, 15 minutes) anymore, even if it is not connected to anything.
patay na po siya.
you can probably still start the car, with the use of your powerbank.

Yes, the battery was indeed dying. Since it's a weekend car, I waited 6 days to buy a replacement. By then, the battery voltage was already down to 8V. Powerbank was still able to start it up but since there was a bit of hesitation in cranking, I kept it running and drove to the nearest battery dealer pronto.