There's no huge advantage to doing this, but each mouse can last for about 20 hours on a charge, so letting them discharge for a while doesn't do any harm. You can also swap out the rechargeable batteries for tunable weights, if you prefer to let the mouse discharge. I'm not quite sure if I'd recommend the PowerPlay to anyone but the most dedicated esports enthusiasts. It's not very fast but, again, if your mouse is constantly charging, how fast it does go isn't a big concern.

This is about equal to Logitech's estimations. After spending a few hours with Chroma Squad, Diablo III, Hex: Shards of Fate, Heroes of the Storm and a handful of other titles, I noticed that the mice tended to charge by about 1or 2 percent per half-hour spent in-game. I tested both the G903 and the G703 with a variety of games to see how well they performed, and how efficiently they charged. Both methods let you play while you charge. By contrast, charging Logitech mice with a USB wire takes about 2 hours. A representative from Logitech estimated that it would take 14 hours to completely charge a dormant mouse on the PowerPlay mat, and perhaps five times that long if the mouse is in constant use. If you're planning on taking your mouse elsewhere, you should be aware that the PowerPlay isn't the fastest way to charge it by a wide margin. You can monitor a mouse's charging status with the Logitech Gaming Software, although you won't really have to.

If your wireless mouse has ever run out of power in the middle of a game, the PowerPlay ensures that you'll never have to deal with that inconvenience again.

Logitech powerplay software