A few days ago, we posted the Neware best seller (BTS4000-5V6A) and the second best selling battery tester (BTS4000-5V10mA). Today, we are going to see which one is the NO.3. The third most popular Neware tester is: BTS4000-5V12A! There are many reasons. One of the reason is that BTS4000-5V12A has dual ranges: 5mA-1A, 1A-12A. Because the accuracy of the model