The Reichert AVIA Powercel® Battery is the official replacement battery pack designed specifically for the Reichert Tono-Pen AVIA® applanation tonometer. This removable battery module provides reliable power for thousands of intraocular pressure (IOP) measurements and is engineered for quick, tool-free replacement.

The compact battery pack uses 2 × 3V lithium manganese dioxide (LiMnO₂) cells and installs easily by squeezing and pulling the existing module from the device. The Tono-Pen AVIA’s built-in battery indicator helps clinicians monitor remaining power for uninterrupted operation.