I haven't had a need for a specific 2s charger. I have 1s and 4s currently. I do use a 65w power bank to charge on the go via usb-c, but I use a B4Neo+. I have a few GaN power bricks and power strips I use when at home for 65w that have usb-c. You could use a 5.5mm barrel dc charger made for laptops. One guy on amazon said he is using a 12v 5amp and it works, which is only 60w. Volts X Amps = Watts. The toothstor has minimum input of 65w, that could just be tied to the USB-c port. Kind of confusing. I use all of those options on my whoopstor. I use a 19v 3a barrel connector at times for that without issue. But it won't charge if usb-c isn't 65w.
Hope you find some of that early morning rambling useful.