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[TRUE CAPACITY TEST] Constant current CC discharge testing measures real battery capacity instead of only voltage with 0.20 to 9.99A adjustable current and 1.0 to 25.0V cutoff setting. [WIDE TESTING RANGE] Supports discharge voltage from 1.00 to 30.00V with up to 60W load power making it suitable for battery checking power adapter aging and electronics bench testing tasks. [CLEAR DIGITAL DISPLAY] Classic digital tube screen stays intuitive durable and more heat resistant than LCD while buzzer prompts improve operation and help users monitor test status with ease. [STABLE COOLING DESIGN] Built with original IR power tube dual ball bearing fans and a large industrial heatsink plus temperature controlled variable speed cooling for long term stability. [SMART SAFE OPERATION] encoder control simplifies setup while automatic memory saves parameters and protections for overheat overpower overvoltage reverse connection and abnormal supply add confidence.