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

**Lin Dan** · March 14th, 2019 01:31 AM

Originally Posted by reddik2017

Per my experience,Yes,malaking tulong talaga ang may voltmeter on knowing the health of our cars battery and/or alternator. Ever since i had one, never ko na na-experience ang di makapag start due to low battery...or yung tipong di mo alam bakit biglang humina ang radyo,ilaw at aircon.

Magandang indicator at warning on battery/alternator health talaga ang voltmeter and hindi naman siya ganun ka expensive.I think,all motorist should have one of these.

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Agree.

My voltmoter (via the lighter plug) registers the same voltage compared with the casa's digital scan tool. It only costs 280.

**dr. d** · March 14th, 2019 02:28 AM

Originally Posted by Lin Dan

Agree.

My voltmoter (via the lighter plug) registers the same voltage compared with the casa's digital scan tool. It only costs 280.

i read it before i start the engine, with the key on ACC.
once the engine starts, the reading is now a reflection of the alternator's performance, and not the battery's.
i want to read it during the cranking period, but i simply can't read it... probably something to do with my eyes and the gadget's design...

**Athrunzala** · March 14th, 2019 02:13 PM

Originally Posted by dr. d

i read it before i start the engine, with the key on ACC.
once the engine starts, the reading is now a reflection of the alternator's performance, and not the battery's.
i want to read it during the cranking period, but i simply can't read it... probably something to do with my eyes and the gadget's design...

same observation here