Sena z Biedronka Automatic Rectifier: Min Current for 12V 6-10Ah Motorcycle Batteries (Max 2/4A)

Question

Hello!
Has anyone of your colleagues measured and know the minimum current at 12v in this rectifier. The manufacturer in the leaflet gives only information about the maximum current (V max = 2 / 4A 12V). I am asking because I want to use this charger to charge 6 and 10Ah motorcycle batteries. The rule is that the current value up to 1/10 of the battery capacity. Or maybe something has changed and lives in ignorance.

Regards!

Jawi_P · Answer

You can easily charge the battery both. The battery will be fully discharged as it will take more current only for a while and will fall later. Your motorcycle charges the battery exactly the same.

Grzesio70 · Answer

Thanks with the quick reply. The thing is that currently in Biedronka this charger is in the promotion and I can buy it. I can also borrow another one with the symbol BC-something there, which has clearly written on the box that it charges with electricity min. 0.8A 12V. Hence my question about the minimum of Biedronkowa. Maybe someone knows or measured.

Jawi_P · Answer

I have no idea how you can determine the min. To force the minimum current, the charger would have to increase the voltage to force the current. So it would kill batteries Here probably specialist, ladybug translator, humanist, got lost in the terms. It was meant that the charger had a current of at least 0.8A. If the battery needs it. Or it turns off at a current below 0.8A because the charger finds that the battery has charged That would be such a ficzer I do not know the parameters of this charger. And all in all, call the store manager and ask and record the answer I once heard a translation of a customer service at an electronics booth to a customer. Until I stopped to listen and pretend even interested customer, but completely green. Interesting experience. I hope I found a replacement ...

Grzesio70 · Answer

I don't know if we understand each other well, it's about two different chargers. The one from "Biedronka" has the following description on the box: "max. 2 / 4A 12V".
I can borrow from my colleague another automatic charger called "BC-something", which has clearly written on the packaging:
min. 0.8, max 3.8A 12V.
So from a friend's post it follows that the one from "Biedronka" should be described: 0-2A motorcycle and 0-4A car at 12V.
As for information from store employees, it rather doesn't make sense.

mariuszp19 · Answer

That's exactly how it should be described.

gumisie · Answer

The unit of battery capacity is: Ah or mAh and nothing special about the charging current (0.1C) has changed. Parameters given on this type of chargers are a typical marketing ploy, but we should be aware of the fact that such a charger should not be charged with a higher current than declared by the manufacturer. Regards

Grzesio70 · Answer

An oversight, of course, that it is about the battery capacity expressed in "Ah", I have already corrected.
And out of curiosity, information for the layman, how can one load the automatic charger above the value declared by the manufacturer? In this particular case, 4A.
Regards!

Jawi_P · Answer

Even connect a fully discharged high capacity battery. It's just that all those chargers, and in fact converters, will limit the current to their rated and will probably not give more.

gumisie · Answer

He would not risk, though: Give it confidently and they won't, maybe it will work current protection, but they also have the right to be completely destroyed. ps A completely discharged battery is more eligible for utilization than for any experiments.

Jawi_P · Answer

It may be as you say, but it would have to be some total shit. We know that short-circuit protection is no problem, I saw these ladybug inventions from 3 pcs, one I have at home. All short-circuit proof, they don't even provide voltage without a battery connected. Well, but everything is possible.

gumisie · Answer

And this is the advantage of so-called rectifiers; Automatic. Lord, I think the rectifier broke! When I short-circuit black and red, it doesn't spark.

Wlodek22 · Answer

I measured, but now I don't remember exactly. Something about 0.5A, but this is the current at which the charger indicates the end of the charging process. You as a user have no influence on this. You can only choose 2A or 4A. For example, you choose 2A, so up to a voltage of 13.8V, the current will be 2A, and after exceeding this voltage, the current will be reduced up to the threshold of 14.5 / 14.7V and 0.5A. Unfortunately, the battery will still be overcharged. In addition, it overheats and reduces the charging current. With larger batteries instead of the set 4A, it charges with an average current of 1.4A. Look for other solutions. E.g. regulated power supply, or small step down converter with current and voltage regulation + power supply e.g. from laptop. You can also use an ordinary rectifier and limit the current, e.g. 5-10W light bulb.

Grzesio70 · Answer

I thank my colleagues for interest and information, I cordially greet and close the topic.

Sena z Biedronka Automatic Rectifier: Min Current for 12V 6-10Ah Motorcycle Batteries (Max 2/4A)

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