Savage, but then a mouse would be uncharacteristically heavy with a standard barrel battery, right??. A button may work but nobody makes rechargeable buttons yet.

I switched from my fancy pants Turtle Beach Elite 800X headset, the top brand before Astro A40 and Arctis Nova Pro released, to a SteelSeries Siberia 800. Going from a dodgy, dying-battery premium headset to a midrange that comes with two batteries and more can be purchased was a (quite literal) game changer. So I can attest to Steelseries being great. Side bonus the batteries were coincidentally interchangeable with a few brands of Nokia but can’t remember which ones.

My point is, SteelSeries are a great brand and they make mice with interchangeable, AAA, batteries. Like the Rival 3