Thanks to the clever design of the Twelve South Butterfly SE 2-in-1 Qi2 Charger, however, you can power two devices with a single, compact accessory. Best of all, the foldable charger is now on sale at Amazon and Best Buy starting at $40.99 ($59 off), which is the lowest price we’ve seen. For this kit to work, you’ll need a 30W charger (this one from Anker is currently down to $12.29 at Amazon). Twelve South also offers an aluminum version of the Butterfly, which is also on sale for $79.99 ($50 off) at Amazon. Correction, July 18th: An earlier version of this article misstated that the Twelve South Butterfly SE can power two Qi2-compatible devices at once.