The Smgda Battery Tester Checker is a handy tool designed to test the battery capacity of various small mini batteries, including C, D, N, AA, AAA, and 9V button cell batteries. With its LCD display, you can easily read the battery's capacity in units of milliampere-hours (mAh) or ampere-hours (Ah). The tester is also suitable for checking the capacity of low-drain devices such as watches, hearing aids, or other small electronic devices.

The device features a compact design and is easy to use. Simply insert your battery into the testing slot and press the test button. The LCD display will show the battery's capacity in a range of units, from 0.01 to 10000 mAh. The tester also comes with three different test modes: low-drain, standard, and high-capacity.

The Smgda Battery Tester Checker is perfect for individuals who need to check the battery capacity of their devices regularly. Its small size makes it ideal for backpacking or hiking trips where space is limited. Whether you're a professional electrician, engineer, or hobbyist, this device is sure to save you time and frustration in your battery testing routine.