AAAA Battery for Surface Pen, Rechargeable AAAA Battery for Active Stylus LED Flashlight and More Devices (2)

The AAAA Battery for Surface Pen and other devices has garnered mixed reviews from customers. Users appreciate the unique size compatibility for specific gadgets like tablet styluses and LED flashlights. One user tested the batteries upon arrival and found them to hold a charge of 1.23V, suggesting they were received in good working order. Another reviewer measured a full charge that yielded a voltage of 1.45V, although they expressed uncertainty about the battery capacity, noting that their Surface Pro indicated only a 75% charge. Some customers have found the batteries useful, but there is a general Consensus that more testing is needed to ascertain their long-term performance and reliability under load. Interestingly, one user experienced a mix-up with their toy's battery requirements, further highlighting the often-obscure nature of AAAA batteries in the market. Overall, while the AAAA Battery for Surface Pen appears functional and meets the basic needs of customers requiring this less common size, the varying experiences with charge capacity and compatibility suggest potential caution for long-term use. **