https://czs007.com/tags/hardware/ Recent content in Hardware on Zack Cao Hugo en-us Fri, 21 Aug 2026 00:00:00 +0000 https://czs007.com/posts/four-cells-one-voltage/ Fri, 21 Aug 2026 00:00:00 +0000 https://czs007.com/posts/four-cells-one-voltage/ Four old cells kept dropping the Bluetooth link. Two new ones in a four-slot bay fixed it — and the reported charge went up, from 85% to 100%. Why fewer cells read higher, and what that number can and cannot tell you.