After the Apple Event today, Apple has discontinued the MagSafe Duo Charger and MagSafe Battery Pack. The MagSafe Duo charger charges the iPhone, Apple Watch, wireless charging case for AirPods, and other Qi certified devices.
The MagSafe Duo Charger was sold for $129. You can still purchase the charger at retail stores like Best Buy while supplies last.
The MagSafe Battery Pack was sold for $99. Just like the MagSafe Duo Charger, you can still purchase the accessory at Best Buy and other retailers while supplies last.