I thought the 5K version is enough but no, this is the best option for a magsafe power bank. I also bought the Flow Mini 2 as a backup power bank but for magsafe, this is the one. Been working fine. Gets the Slow Charger message under Battery on the iPhone but just let it rest unattached for a bit and snap it on again and it works fine. It gets better eventually. Caveats of a Qi2 wireless charger. Speed-wise as expected for Qi2 and Apple unlocking Qi2 support. Best when wired.