I solved the problem of batteries by purchasing Varta's batteries (4 pcs. AA for 2700 mAh each). It would be possible to buy native batteries purely for gamepads, but it is much more expensive (1800 × 2 batteries + optional docking station 2022 = 5600). A set of VARTA Mini Charger + 2AA 2100 mAh (I use it in a rodent), as well as the mentioned 4AA 2700 mAh, cost 820 + 915 = 1735. Thus, the total capacity of Varta batteries in one gamepad will be 5400 mAh. By the way, native XBox batteries have a capacity of only 800 mAh (i. E. 6.75 times less), although they charge in 4 hours versus 20 hours of Varta charging. In my opinion, the conclusion is obvious.