I prefer separate rechargeables. Get a 4-pack of Panasonic Eneloops with charger (
$18 at Amazon US) for (less than) the price of a Play n Charge kit and you’re golden: one pair in the controller, one always charged for a quick swap, no cables, higher capacity. Or pay a bit more for a “Power Pack” (
old,
new) and you’ve covered most remotes/mice in your home.