[Solved] How can I charge Parkside X20V batteries from a 12V AGM battery?

Hello everyone,

I have X20V Parkside batteries, I want to charge by AGM Battery 12V, does anyone have an experience? If yes, please share, or anyone know about electronic may teach me how to do that.
Which exact Parkside X20V battery do you have (model or Ah rating), and do you also have the original charger with its input/output specs written on the label?
PAP 20 B3 / 4 Ah.
Do you want to run the original Parkside charger from the 12V AGM battery, or do you want to charge the X20V battery directly with your own electronic circuit?
I want directly charge with own electronic circuit.

KangBahar7238 wrote:

I have a Parkside X20V battery, I want to charge a 12V AGM battery,

You wrote the opposite in the title.

>>21909932
Is it? For the title, I was using the generate option.
But the point is: how to charge Parkside X20V batteries from the power source AGM 12V, because in our allotment doesn't have normal power (220V), and this original Parkside charger needs source normal power 220V.
On the original Parkside input: 220V output: 21V.

Use an inverter that reduces the voltage to 14.2.... 14,4V. Limit the charging current to e.g. 0.1C.
Here you have a manual for AGM: https://pogotowieakumulatorowe24.com/pl/blog/akumulatory-agm-instrukcja-uzytkowania
Here you have an example of an inverter that you set to the correct charging parameters: https://www.gotronik.pl/przetwornica-napiecia-dc-0-5v-30v-4a-50w-p-7657.html

You can simply use a model charger it is the simplest most versatile solution

In the other direction this inverter will also do the job. Set a voltage of 21V, a current between about between 1A 2A and you're done. Parkside batteries can be charged without a fancy charger communicating with the pack. Keep an eye on the end of charge voltage. To be safe, you can set 20V, then you won't overcharge the cells.

You can also use something like this, only you need a fast car charger for the set. The device works in 2 ways. It can either do the job of a powerbank with 4 USB outputs, or it can charge a connected battery from the USB-C input.

@mipix
Thank you so much, I will try

Here's how to charge.

https://www.youtube.com/watch?v=Ajf88JgELPI

@wiertacz.
Thank you, I watched this video before I wrote here, unfortunately I don't have a broken or unused old charger to sacrifice.

I don't have a charger at all, so I charged my battery with the XY-SJVA-4 module (without the X), it's an inverter that raises or lowers the voltage with a function? charging Li-ion batteries, but unfortunately one day I overloaded it and it went up in smoke....
Plus a voltmeter with an ammeter in one, the whole thing cost about 35zl at the time
https://www.gotronik.pl/przetwornica-napiecia-dc-0-5v-30v-4a-50w-p-7657.html here something similar, as I can't see this earlier version without the X and without the display https://www.google.com/search?num=10&clie...egQIGRAB&biw=1608&bih=791&dpr=0.9

KangBahar7238 wrote:

@wiertacz.
Thank you, I watched the video before I wrote here, unfortunately I don't have a broken or unused old charger that I can sacrifice.

The dude cut the power supply off the charger circuit, as the power supply was probably faulty.
I've been thinking about something like this myself, whether to wire up an inverter similar to the one I'm proposing, and e.g. via a switch, have a mobile as well as mains charger - you don't need to cut a working charger, just power the charging circuit either from the mains, or from another external source of 21.5V generated from whatever is just available....
My inverter is powered from some 19V 3.42A power supply from an ASUS bought for a tenner on Volumen. It could also be from a 12V battery, or any other source within the voltage range of the inverter.
I didn't decide to buy the original charger, so the conversion wasn't there....

I'm still doing something

If you have the original Parkside battery charger, the easiest thing to do is simply use that charger – just plug it into a 12V/230V power inverter. These inverters are very cheap these days.

I do; I have the original charger and power inverter as well. I once charged Parkside batteries, but only enough for two batteries, and the power from this AGM ran out. I watched a video explaining that a battery charger essentially converts AC power to DC power to charge the battery. If I use an inverter from DC 12 V to AC 230 V and then convert it back to DC 21.5 V (as required to charge Parkside batteries).
I want to try and find out if I can charge more than two batteries using only a DC inverter from 12 V DC to 21.5 V DC.
Unfortunately, I’m not an electronics expert, which is why I’ve written this here, hoping someone has had exactly the same or a similar experience.

You could also use a 12 V to 21 V converter, as you suggest. Whether this will be better depends on the converter’s efficiency. There are plenty of ready-made step-up switching converters that can be set to 21 V and limit the charging current.
As someone has already mentioned, you could also use a model-making charger, such as the i-charger 106B or the iMax B6.

Yes, I bought a ready-made one and hopefully I’ll soon be able to see the results - fingers crossed for me.

Now I can charge 20V Parkside batteries from an AGM 12V battery using this tool:

https://elektroweb.pl/pl/przetwornice-step-up...ca-step-up-12-60v-13-80v-12a-600w.htmls?_gl=1*11qqeh5*_up*MQ..&gclid=CjwKCAjw6MPRBhBTEiwAd-7Mr5XiqUXuJAQxg5oMgm4CkzbES2XnFE_wKliu5kSn7OuYpTlibAlQjRoCBBkQAvD_BwE&gbraid=0AAAAADsUy2abn-6O_oFoG0qN5ieG6gpvM

I bought a DC-DC inverter to boost the voltage from 12V to 21.5V

https://elektroweb.pl/pl/przetwornice-step-up...ca-step-up-12-60v-13-80v-12a-600w.htmls?_gl=1*11qqeh5*_up*MQ..&gclid=CjwKCAjw6MPRBhBTEiwAd-7Mr5XiqUXuJAQxg5oMgm4CkzbES2XnFE_wKliu5kSn7OuYpTlibAlQjRoCBBkQAvD_BwE&gbraid=0AAAAADsUy2abn-6O_oFoG0qN5ieG6gpvM

Thank you everyone.