Battery - Charging with a 0-30V 0-10 A laboratory power supply

Question

Hello everyone, I can't find it anywhere, can I charge the 77ah 650 A battery with a 0-30V 0-10A laboratory power supply?

Freddy · Accepted Answer

Theoretically, you can, but you need to keep an eye on the voltage and charging current limits.

enhanced · Answer

I mean, it only has to set the voltage because the current will adjust itself if it's right?

Danielrusniak · Answer

Well, I do not know ... it should work like a rectifier ... And the battery gives resistance?

enhanced · Answer

Well, you will definitely set the voltage and drive, the intensity will adjust itself over time, i.e. it will decrease. This battery has discharged, do you want to connect for tests?

Jawi_P · Answer

Just keep an eye on the tension. At most, you can limit the current more than the battery itself, if you wanted to charge it slower.

Danielrusniak · Answer

Discharge and test

Freddy · Answer

If you want to discharge yourself, I invite you to the gym. Write clearly and in Polish what you expect and what you want to do.

Danielrusniak · Answer

Sorry, he writes from the phone .... it has discharged, I have already bought a new one, but I want to test it on the old one, it will definitely be useful one day.

Freddy · Answer

Then buy it, or make yourself a car charger.

Sniezynka · Answer

Hello, I charge this way for a 70Ah battery, I set the short-circuit current of the power supply to 7A and the no-load voltage to 14.6V.

tadkli9743 · Answer

Hello

I have a battery to charge: a car battery 12V / 61Ah, a tractor (lawn mower) 12V / 20Ah, and a motorcycle 12V / 14Ah I charge all with a 12V-6A charger.
I charge the car and tractor batteries directly with a charger, while the motorcycle batteries are charged with a light bulb limiting the current to 1.5A.
I connect the rectifier to the autotransformer in order to limit the voltage at the battery terminals to a maximum of 14.6V.
During the charging process, I have a voltmeter connected to the battery terminals and an ammeter in series with the battery.

When using a laboratory power supply, make sure that the voltage does not exceed 15V on the battery.

Regards

Anonymous · Answer

Opinions on charging a car battery with a laboratory power supply are different, some say it is not possible, others say it is 100 times better, but much more expensive than a rectifier. In my opinion, one thing is certain, you can perfectly understand what this voltage-current relationship is about on the power supply.
My power supply at 12v gives max 10A. 72 Ah battery. Room battery temperature 12.7V. At the beginning of the test, I set the voltage in the power supply to 14.4V, the current to the maximum. The power supply was humming a lot, so the power consumption was high. 9.3 A. Keeping what is recommended 1/10 I set (limited) the current to 7 A. Quickly from these 7A it became 5 then 4.3.2 A. After about 3 hours on the power supply the ammeter stood at 0.40 A The battery started to hum a little electrolyte with the aerometer I can't check because this center is hermetic. Charged finished.
After 10 hours, when the battery voltage stabilized at 12.7V, I returned to the test. I set the current to the power supply to the maximum voltage of 13.1V was 0.1A. I increased the voltage to 14.4V, the battery was 0.40A. I gave it for a moment 15.3V took 1.08 A. As I gave the voltage for a while, 15.9V began to take 3.15 A. These are my observations and I do not want to prove anything to anyone or perhaps impose my ignorance.

Beginning.

After about 10 hours

At the beginning of the test, the battery was a bit tired with such a miracle.

gimak · Answer

And these are correct observations, just check it out for full knowledge what voltage, with the same settings, will be given by this power supply loaded with only a capacitor, because this is the actual value of the voltage to which it would aim if it were not for the electrolysis of water. This humming is probably due to the electrolysis of the water. I have not encountered this humming noise in my batteries. If it is a switched-mode power supply, it will not increase, but if it is transformer, it will increase. And by the way, this starting current of 3.15 A, with a switching power supply, would drop quickly and in the end it would be a maximum value of 300-400 mA.

Anonymous · Answer

Linear or transformer power supply.

Battery - Charging with a 0-30V 0-10 A laboratory power supply

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