The Nuphy Air 75 is the best keyboard I’ve used. It’s mechanical, low-profile, beautiful, and easy to carry between the office and home. However, the battery swelling issue has been disappointing. I believe the quality of the parts, design, and overall build make this keyboard feel truly premium. But when I pay this amount, I don’t expect the battery to warp the keyboard’s frame after just a year of use. It’s also unfortunate that the battery is so non-standard, making it hard to replace on my own. That said, this is the only drawback for me. I hope it was just a minor issue with the first revision, and I look forward to using it without problems for years to come. Thank you to the team for your work and support!