Hi Jenny,
Thank you for your reply, and for taking my feedback so seriously. It's really encouraging to hear that the team is already discussing some of the ideas and improvements. I'm looking forward to seeing how the product develops over time.
A small update regarding communication: Apple fixed the Braille Screen Input bug in the latest iOS 27 developer beta, so I can now type on my iPhone again. That means I'm happy to continue either by email or WhatsApp—whatever is most convenient for you.
I've now had a few more days to use the power bank, and I have a few additional observations that may be useful.
First, regarding the tactile battery dots.
I still think this is one of the best accessibility features of the product, but I've noticed that the mechanism isn't always reliable. The dots don't consistently pop up and stay in the raised position.
For example, when the power bank is fully charged, I sometimes only get three raised dots, occasionally only two, and every now and then all four. Pressing the button often makes another dot pop up, but not always all of them. It feels like the release mechanism is working, but one or more dots don't always lock into the raised position properly.
Since these dots are an important accessibility feature, I think it's worth looking into whether the mechanical locking mechanism can be made more reliable.
The second thing I've noticed is the battery capacity.
I mentioned after my first tests that I wanted to give it a few charge cycles before drawing any conclusions, but after several days of use I'm still seeing the same pattern.
The power bank is specified as having a 10,000 mAh battery, but in practice it behaves much more like a 4,000 mAh battery.
As an example, today I charged my iPhone from 53% to 72%, so the phone gained 19%. During exactly the same charging session, the power bank dropped from 100% to 82%, a loss of 18%.
I've seen almost identical results on both my own iPhone 17 Pro and my son's iPhone 16e. Both phones have batteries of around 4,000 mAh, so when the percentage gained on the phone is almost identical to the percentage lost from the power bank, it doesn't seem consistent with a 10,000 mAh capacity.
Of course I know there are conversion losses when charging, so I wouldn't expect a full 10,000 mAh in real-world use, but I would still expect significantly more capacity than I'm seeing.
I'm not sure whether the unit I received is an early prototype with a smaller battery, or whether there is another explanation, but I thought it was worth mentioning.
Finally, I have one idea for future generations of the product.
The power bank is almost exactly the same size as modern iPhones, which made me think that it could be an interesting candidate for MagSafe support in a future version.
Even if wireless charging isn't possible, simply adding MagSafe magnets would allow the power bank to attach securely to the back of an iPhone while still using a USB-C cable. That alone would make it much easier to carry both devices together.
If you ever decide to add wireless MagSafe charging as well, one challenge would be the increasingly large camera bump on modern iPhones. Perhaps the lighter end of the power bank could be redesigned with a small recessed area that allows room for the camera module, so the power bank can sit flat against the phone.
This is just an idea for a future model, not a suggestion for the current one, but it seemed worth mentioning while I was thinking about the design.
Overall I'm still very happy with the product, and especially with the accessibility features you've included. I'll continue using it over the coming weeks, and if I discover anything else that might be useful, I'll let you know.