Amazon Basics 8-Pack AAAA Reliable Alkaline Batteries, 1.5 Volt, 3-Year Shelf Life

Customers find these AAAA batteries perform well, working just as well as name-brand alternatives and fitting perfectly in Surface Pens. They consider them good value for money, particularly as an alternative to recognized brands, and appreciate their compatibility with various devices, including Lenovo active styluses. The battery life and power output receive mixed reviews - while some find them long-lasting and powerful, others report they don't last a day and aren't fully charged. The size is also mixed, with customers noting they are slightly smaller than most AAA batteries.