Features 1.Intelligent temperature-controlled electronic load is with clear interface for simple operation and complete protection mechanism. 2.OAP and OHP functions can well realize unattended power aging test, easy to use. 3.Battery checker supports automatic statistics of discharge capacity and discharge time. 4.Using rotating encoder potentiometer, the current can be adjusted accurately to 0.01A and the current can be locked to prevent misoperation. 5.Data group function helps that you can choose whether to add the capacity value and running time of one stage. Specification Item Type: Battery capacity tester Pattern: 4A, 25W / 5A, 35W (optional) Rated Power Supply Voltage: DC5.0 ~ 30.0V (with anti-reverse protection, no burning after reverse connection) Rated Load Voltage: DC1.5 ~ 25.0V (with anti-reverse connection protection, reverse connection does not burn) Rated Load Current: 0.00 ~ 4.00A / 0.00-5.00A Discharge Power: 25W / 35W Constant Current Accuracy: ± (1% + 3 digit) Voltage Accuracy: ± (0.5% + 1 digit) Overvoltage Protection (OVP): Default 25.2V (can be set by yourself) Overcurrent Protection (OCP): Default 4.10A (can be set by yourself) / default 5.10A (can be set by yourself) Over Power Protection (OPP): Default 25.5W (can be set by yourself) / default 35.5W (can be set by yourself) Undervoltage Protection (LVP): Default 1.5V (can be set by yourself) Over Temperature Protection (OTP): About 80 ℃ by default (cannot be set) Fan Speed: Oil-bearing intelligent temperature control fan, speed 580 ± 10% RPM / water pressure bearing intelligent temperature control fan, speed 8000 ± 10% RPM Function Description: 1. Display current (A) voltage (V) power (W) capacity (Ah) and discharge time; 2. With a complete protection mechanism; 3. Automatic statistics of discharge capacity and discharge time; 4. Set the maximum discharge capacity (OAH) and maximum discharge time (OHP); (Realize unattended power aging test) 5. Intelligent temperature control fan, the fan starts automatically when the power is higher than 10W or the temperature is greater than 40 ℃; 6. Using rotating encoder potentiometer, the current can be adjusted accurately to 0.01A, and the current can be locked to prevent misoperation; 7. Data group function: you can choose whether to add the capacity value and running time of one stage; 8. With powerful serial communication function. Size: Approx. 44.5mm / 1.8in, Approx. 10.5mm / 0.4in, Approx. 39mm / 1.5in, Approx. 79mm / 3.1in, Approx. 25mm / 1in Package List 1 x Battery Capacity Tester