I have been using pen input since 2009 when I started university, and am glad that they're finally gaining traction as mainstream input devices. The only probl

I have been using pen input since 2009 when I started university, and am glad that they're finally gaining traction as mainstream input devices. The only problem is most of these new pens are actively powered by the annoyingly rare AAAA battery. I haven't been able to find a rechargeable AAAA from a reputable manufacturer yet. And the very fact that they require manual battery swaps is unacceptable in this day and age IMHO. This is why my newest laptop was a HP Elite X2 1011 that I paid through the nose for, but at least has an older generation passive Wacom pen that does not require a battery. If any laptop/tablet makers are reading this, please replace the AAAA battery slot in these active pens with Li-ion batteries and allow them to automatically charge from the laptop when placed into their holders.