Battery powered tools usually have one huge drawback. With rare exceptions, it does not have a standard connection to the mains. Continuously charging batteries is not as convenient as it sounds. And if the latter also deteriorate, then the most valuable tool actually becomes completely useless. You can get out of the situation yourself using a two-core wire and electrical tape.
What you need: screwdriver power supply, two-core wire, electrical tape, plastic pipe
We remove the battery from the screwdriver and disassemble its case so as to gain access to the battery pack. We take it out, after which we measure the height of the extracted block. According to the taken measurement, we cut out two pieces of plastic pipe with a diameter of 20 mm. We check if the tubes fit into the battery box so that it can close back. If this does not happen, we file and grind our workpieces.
Plastic tubes are needed to secure the contacts. Remove the contact plates from the battery pack. They fit over cut plastic tubes. If the diameter of the plates is larger, then we wind several layers of electrical tape on the tubes as a seal. Next, a prepared two-core wire is taken. Contacts are welded to it. The wiring itself is passed through plastic tubes, which in turn are twisted with electrical tape.
The other end of the wire is connected (welded) to the power supply. Here it is extremely important to correctly determine the polarity and weld the wires. All potentially dangerous joints are covered with electrical tape. Further, a hole is made in the battery case for the wires. The whole structure is assembled, however, now, together with the batteries, we will have tubes with contacts and wires from the power supply. The system is ready for use.
Continuing the topic, read bit jammed in the screwdriver: how to extract without any problems.