Feature:1. Good Components and Sturdy Design: The battery capacity detection module adopts standard infrared power tubes and dual ball bearing high speed fans, ensuring excellent performance and durability.2. Heat Dissipation and Dust Prevention: The digital battery tester is equipped with an industrial grade large tooth heat sink, which can prevent dust and ensure stable performance even in harsh environments. Its design can withstand harsh conditions.3. Long Term Stability and Power Redundancy: The industrial grade design of the battery ensures long term stability. Its power redundancy is not less than 50% at 25℃, providing continuous and reliable operation.4. Digital Display: The battery capacity tester module adopts a digital display screen, providing clear and easy to read battery capacity information. This display is very durable, heat resistant, and has long service life.5. Consistent Full Power Output: After aging, all batteries connected to the battery power meter provide full power output. Regardless of the aging process, this module ensures reliable and consistent power transmission for various applications.Specification:Item Type: Electronic Load TesterMaterial: PCB, aluminum alloy. Power Supply Voltage: DC 12V ± 5%Maximum Voltage: 100VConstant Current Discharge and Current Regulation Range: 0-20AWorking Mode: Single CC mode of constant current. Maximum Error of Discharge Current: 0.7%, 0.01A. Maximum Discharge Power: 250WBasic Function:1. Constant current discharge. 2. Display voltage and current simultaneously during discharge, visually reflecting the discharge situation. 3. Separate voltage and current terminals, correctly wired, can reduce the impact of voltage on line resistance. .Package List:1 xElectronic Load Tester1 x Connecting Cable1 x Nut1 x WasherNote:1. Note:A. Be sure to pay attention to polarity when connecting to the target power supply. B. To reduce the influence of line resistance on the displayed voltage, two wires should be led from two output points + and ‑ to discharge the power supply. C. The power supply voltage should not exceed 15V DC. 2. Fault Causes and Solution: A. No Display on Startup: Check the polarity of the incoming line potential, the incoming line phone position 12V DC is normal and not loose. B. Power on Only Displays 000 and 000: check whether the discharge power supply and wiring polarity are normal. C. Power on Only Displays The Voltage, Adjust The Potentiometer Without Current Discharge: check whether the wiring is in poor contact, and for A+, A‑, check whether the fuse is blown.