EBC-B20H 20A Battery Discharge Capacity Tester — Lithium & Lead-acid, Built-in Load, PC Software, External Charger Support

The EBC-B20H is a 20A capacity tester designed for lithium and lead-acid batteries. It features a built-in discharge load resistor and can work with an external battery pack charger, automatically switching between charge and discharge to streamline testing. The unit supports computer connection for live curve plotting and advanced test control. Wiring mode: Four-wire detection — the voltage measurement and current channel are connected separately to ensure accurate readings. LCD display: voltage, current, capacity, time and other test data are shown on the onboard screen for clear, immediate feedback. Computer connection: requires a dedicated USB to TTL serial cable (not ordinary USB cable). Through the PC interface you can control tests, draw real-time curves, calibrate measurement baselines, upgrade device firmware, and perform cycling charge/discharge operations. Automatic charging and discharging: supports up to 5 steps. Each step can be set as charge (requires an external charger) or discharge, allowing multi-step sequences to run automatically for unattended testing. Easy to operate, the EBC-B20H is suitable for lab and workshop use where accurate capacity measurement and automated cycling are needed.