Amazon offers Prime members the Energizer 2X Charging System for PlayStation 4 or Xbox One for $19.99 with free shipping. (Non-members can qualify for free shipping with orders of $35 or more; otherwise, shipping adds $4.98.) That's tied with our mention from July as the lowest total price we've seen. (It's a current low by $3.) It comes with two Energizer Recharge batteries and accommodates two controllers simultaneously.