Ahead of iPhone Duo’s launch on Friday, accessory maker BMX is releasing what appears to be one of the first MagSafe batteries designed specifically for Apple’s foldable.

The BMX Duo is available to order now and can wirelessly charge your iPhone Duo (or any other iPhone) at up to 15W. You can pick it up on Amazon for $79.99 .

The iPhone Duo supports MagSafe, but because it’s shorter than a standard iPhone, many existing MagSafe accessories likely won’t fit—or will hang awkwardly off the bottom. The BMX Duo 5000mAh Power Bank is designed to fit exactly on the iPhone Duo:

A custom-size 5,000mAh cell is shaped to the iPhone Duo’s folded footprint, so it sits flush on the cover panel instead of hanging past the edges.…