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Cars and trucks

Discharged car battery (fiat palio elx 1.4 2007)

Braian Low
hace 5 años
hace 5 años
Hello everyone. Could you tell me if I can charge my car battery with a 12 volt transformer? I always have to start pushing it and wanted to find a momentary solution until I have money to have the alternator checked. I would thank you a lot!
oswaldo lizarraga
hace 5 años
hace 5 años
Good morning, you can use a direct current transformer of one tenth the total amperage value of the battery, this means if the battery is 80 amps, the charger will be 8 amps of current and the voltage will be a little more than 12v is 15 volts, this is because when the battery is connected to the battery charge the voltage drops to about 13.8v and then the battery starts charging, if you do not have devices to measure the voltage do not connect it more than an hour and a half the voltage to the battery, with that it is enough to charge and then connect to your car and you no longer have to be pushing it, I recommend that you do check the car the electrical system is not going to be charging the alternator or there are extra power consumption while the car is off, meanwhile it is better to remove the negative battery from the battery if you are going to leave your car in storage, so the battery will not be lowered.
Ennio Montenegro.
hace 5 años

Hi Oswaldo
What you mention charging it for an hour, the battery will be charged only with 10% of its charge, so if it starts, it will not start again, being discharged without moving it.
It must be charged at least 10 hours.

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Braian Low
hace 5 años

Thank you for your answers
I was fed up and put it to charge with a 19 v 2.3 amp charger
About 2 hours, I started but after a while no longer. I am not sure whether to charge it for so long in case I get to damage the battery ... When I start pushing it, I press the accelerator pedal for a little while and the lights become more luminous, as if charging only with that. That is why it may be downloaded to me as long as I do not use it as you say oswaldo. What do you think

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oswaldo lizarraga
hace 5 años

I also when that happened to me I charged it as I indicated with a 15v, at 8 amps in the case of my battery for more than an hour, then the charge was completed with the long use I gave it, because my alternator is Well, and when I didn't use it for days, I disconnected the battery, and after days I plugged it in and it starts, so it keeps its charge

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oswaldo lizarraga
hace 5 años

Now as I realized that the alternator charges, I easily started the car with the battery and turned on the lights, then disconnected the negative edge of the battery and the lights were still on, this indicates that the alternator is working, now I put a voltmeter and I mark 14v, with this corroborate its operation.

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oswaldo lizarraga
hace 5 años

What happened in my case was that the battery was half bad, could not hold a charge for a long time, bone was discharged, a seal was bad and the acid in general was cloudy, this can happen after 2 years.

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