Feature: 1. SMALL SIZE Lightweight and portable, it can be easily used for testing in various situations, does not take up extra space, and can have higher practicability. 2. SCIENTIFIC DESIGN According to the principle of solar reflection, its index is analyzed based on a specific alternating current signal, and the detection result is very accurate. 3. MULTIFUNCTION It supports the analysis of 4 accurate battery indicators: voltage, resistance, CCA value, battery condition, and can understand the battery condition in an all round way. 4. PROFESSIONAL DESIGN Supports the detection of lead‑acid batteries for 12V starting, and continuous testing will not damage the battery, ensuring safety and reliability. 5. DIGITAL DISPLAY DESIGN With LCD backlit display, its display is clear, it is more convenient to record and measure data, and it is more convenient to work at night. Specification: Item Type: Car Battery Tester Model: AE300 Material: ABS Purpose: It is suitable for battery fault detection. Support Language: English Fahrenheit (℉) Degrees Celsius (℃) Start Engine Battery Capacity Required Battery Power to Start The Engine 80℉ 26.7℃ 100% 100% 32℉ 0℃ 65% 165% 0℉ -17.8℃ 40% 250% -20℉ -28.9℃ 25% 350% . Package List: 1 x Car Battery Tester1 x Manual