Things seem to be running a bit slow? Still running slow after you replace the batteries? inserting and removing battery after battery when you can just ? This handy digital battery tester makes it easy for you to get the of your batteries and lets you know when it is time to get a new one. Features - - Material: ABS. - Size: 16.00X11.00X2.50 cm/ 6.29X4.32X0.98 inch. - Test multiple sizes of batteries in one unit, quickly test the capacity of your battery - Standard and rechargeable batteries: 9V, AA, AAA, C, D, 1.5V and button types. - Convenient and easy to use: No batteries required, great for home use. - You can simply test battery voltage to determine whether the capacity of the battery is low or high. - A must buy for anyone who uses regular or rechargeable batteries on a regular basis. Package list: 1 Tester