Universal Digital Battery Capacity Tester with LCD display from ANENG (Model BT169). An essential and quick-use diagnostic tool for checking the voltage and health of multiple battery types (including AA, AAA, 9V, 18650 Lithium, and button cells with a range of 1.2V–4.8V). Provides accurate digital readings to ensure your batteries are ready for action. A must-have gadget for any electronics workbench, lab, or smart home setup.