Description: TK15 is a kind of high precision current battery capacity tester (also known as coulometer) which can test battery voltage, current and capacity to help users know the battery condition in time. The TK15 has a memory function. Suitable for mobile and portable equipment, e-bike, balance car, cleaning machine, instrument, ups and so on. Characteristics: 1. Battery empty and full voltage can be adjusted; 2. The backlight automatically opens when in use 3. Automatic memory function when power off; 4. Fast response rate 5. Low power consumption, automatic wake-up; Display: 1. Remaining battery capacity (Ah or mAh) 2. Capacity percentage and totem pole display 3. Battery voltage 4. battery current 5. output power 6. Remaining charge and discharge time Package includes: 1 x 50A Battery Tester 1 x Shielded Cable (1m) 1 x User Manual