Einhell 18V Drill Driver Conversion to Mains Power: Transformer, Rectifier, Capacitors Specs

Hello. I have a small problem because I lost the battery for the drill driver. I gave her time for a few hundred and the power cables on the market is like a medicine, and the better ones still do not have everything I would like to have in a screwdriver, so I'm not interested in buying a new one, the current one was great.

So I want to convert my 18 volt Einhell to mains power. I read in other sample topics that you will need a transformer, rectifier and probably filtering capacitors. I have a few questions:

What parameters must these devices have? In the subject I saw that up to 12 volts a 14 volt transformer was proposed, the rectifier seems to be a graetz bridge, and capacitors I have no idea. So what, up to 18 volts should I give a 20 volt transformer?
Likewise, I have no idea how to put it all together. My guess is that the transformer will be the first to support, then followed by the rectifier and these capacitors? How to glue it together? What capacity do they have to have in order not to screw the screwdriver?

Couldn't you just use the power supply to this screwdriver's battery by connecting it directly to the cable?

Questions if someone seems stupid or provoking senseless adventure / malice let this type of answer go away, not everyone is an electronics engineer and not everyone has mega knowledge in this subject (I have the minimal one) and I want to save it somehow, especially since duplicate batteries I can't get this screwdriver because it's over 10 years old.

Buddy, the easiest, fastest, cheapest will be when you power your 19V screwdriver with a power supply from some laptop. Buy some used 19V power supply, e.g. 4.74 A or more powerful as you will find and a problem with your head. In addition, the power supply has small dimensions.

Allo, I don't know what power your two screwdriver has, how I fell the cells in my 18V screwdriver, I took out the old cells, in their place I pasted a piece of iron (of similar weight as the cells) 8 capacitors 1000uF / 40V, connected a 5 meter cable 2x 1, 5mm? and used an old laptop adapter. In my case it was a Compaq PPP012L power supply (18.5V, 4.9A). You can also use one of the companies that deals with the exchange of cells. A friend sent an old battery from the screwdriver to this company and praises himself: www.bto.pl/B2CProdukt.aspx?id_artykulu=37238

Is it better to buy and install a motor from a blender and a regulator from a triac drill?

Moderated By retrofood:

In no case. The screwdriver is not designed for mains voltage. You will receive a warning for your next advice.

gold-game wrote:

. Buy some used 19V power supply, e.g. 4.74 A or more powerful as you will find and a problem with your head.

Yeah. 4.7A for screwdriver ... Maybe it will start ...

I just have an 18V einhel powered by 24V 160VA safety transformer, I have only unwounded 4 coils with approval. a secondary one and I wound the opposite way to reduce the voltage (I did not want to spoil it because the solution was to be for a while), a 50A rectifier bridge and a 1000uF capacitor was necessary because the regulator without it did not work properly. The downside is that it's heavy and a little buzzing. If I did not have free parts, I would go to the electronic power supply from the laptop, maybe after filling the battery container with capacitors, it would give advice.

czesiu wrote:

If I did not have free parts, I would go to the electronic power supply from the laptop, maybe after filling the battery container with capacitors, it would give advice.

Maybe, the sea is wide and deep ....
Plug in and let me know what happened, not when.
Laptop power adapters have 50-100W. You gave 160VA, which can still be overloaded temporarily. Is the difference?

Is it better to use 18650 high current cells? They are available at the well-known auction portal for PLN 4.99 per item (10 A) or for less than PLN 7. for 20A. you are making a 4s2p package and you have a power supply of 4.2x4 = 16.8V. My 9.6V screwdriver has been working on the 3s2p = 12.6V package for 2 years and I don't feel like burning myself. you will lose 1.2V, which you will not feel in household chores. it remains only to measure whether such a package will fit into the container. For this you do or buy a balancer and you can charge with high current according to the angle of the links from the charger to the lap. You will not have to argue with the cable during operation. !

Good idea, you just forgot that laptop cells require a specific and dedicated charger.

Added after 8 [minutes]:

partyzancik wrote:

Is it better to buy and install a motor from a blender and a regulator from a triac drill?

Do you speak for a clear holere if you have no idea about electrics and electronics?

Moderated By Krzysztof Reszka:

3.1.9. Don't be ironic and don't be mean to the other side of the discussion. Respect the disagreement and other opinions on the forum. Buddy, this is a forum, so you don't set the rules here, who should speak or not.

nostromo wrote:

Added after 8 [minutes]:

partyzancik wrote:

Is it better to buy and install a motor from a blender and a regulator from a triac drill?

Do you speak for a clear holere if you have no idea about electrics and electronics?

And what the fuck do you care about, do I have or have no idea? rather at least the same or bigger than yours

Moderated By retrofood:

Warning, point 3.1.9 of the regulations.

I did not write about the usual cells from laptops, but about high-current ones. What about the charger is using a balancer about which I also wrote just a laptop power supply.
DSCN81..JPG Download (1.06 MB) - screwdriver with 18650 links. Package 3s2p. Cells US18650V3. Cell capacity 2150mh.
Balancer connector + battery discharge switch on. Discharge system on only during operation.
A professional carpenter worked on building a house on the plot for 6 hours on one battery. Battery charging current 1.2 A- you could give 2A but it would shorten the number of charging cycles. 2 years old and gives advice.

skorpionik81 wrote:

I want to save it somehow, the more that the duplicate batteries for this model of screwdriver I can not get because it is over 10 years old equipment.

I recommend giving the used battery for regeneration. They will replace the used cells with new ones better than the factory ones.
You can also try regeneration yourself. It is very easy. You unscrew the housing and look at your links. You order the same, ready packet of links in the company (e.g. bto.pl) and assemble. Fold the cover and it's ready. You've got a power screwdriver like ten years ago, and it'll work on one charge longer.

You can ask power tools for Ni-MH batteries. Many customers often leave damaged, worn out power tools or batteries at service centers, electronic waste collection points or containers for such waste in construction hypermarkets. You can sort the links and assemble the package

"Under no circumstances. The screwdriver is not designed for mains voltage. You will receive a warning for another such advice."
That is why I wrote about the replacement of a coupler motor for a working with mains voltage. After all, that's how network screwdrivers are constructed
If the conversion would be limited to adding a few kilograms or putting a much larger box under the handle compared to the size of the battery, the modification loses its sense, the raison d'etre and the logic in it is not

"and chain stores on the market are like medicine"
What power chains are we talking about?
Chinese on allegro full of, and just as well a small plastic two-speed celma will play this role