Are the characteristics of the current coming from the batteries and from the power supply different?

Question

Electronics

I have a gamepad that does not have a separate power connector (logitech f710). When I use batteries or accumulators at a party, and at home I have a socket at hand. It was decided: to make dummies of batteries, and to apply current to the contacts from the power supply, and play calmly. But they expressed the opinion to me that they say, you’ll look for the appropriate power supply, there are surges in consumption (vibration), and now all power supplies are Chinese, without protection, they say the game is not worth the candle. This is true? Are the current characteristics of batteries and power supply the same? How does this technique relate to errors of 1-2 volts or ± 0.5 amperes? Or does the power supply have to exactly match the specifications of the two batteries?

Answer 1

If this is interesting to someone, I will get out of the situation and use this thing (I ordered it on Ali)
If someone who understands has comments, I will be glad to express it.

Answer 2

As long as we have a battery-powered device initially, it should be resistant to a decrease in supply voltage somewhere up to 2 volts without problems.
. The current strength from the power source must be no less than that which the device consumes.
In total, any 3 volt block that is capable of delivering more than 180ma will do.
It will be difficult to find a 3 volt power supply, but you can find a 5 volt power supply (charging from any mobile phone), and then take up a soldering iron - do you need it?
Buy 2 sets of batteries and a charger - you don't have to make holes in the lid and wrap around wiring.

Answer 3

do not worry and put any PSU issuing 3V and at least 200 mA. They are all Chinese, all impulsive, all equally worthless if they cost less than 1000 rubles. The joystick will survive, it also has a stabilizer at the input.

Answer 4

Take a universal adapter https://ru.aliexpress.com/item/3-4-5-5-6-7-5-9V-12...
Googling in ali on request AC DC 3V

Answer 5

yes, then it’s
easier to drag yourself with wires to the sofa to buy batteries of the right size in quantity with a margin even in ikea