Battery Tester EBCA20 Overview The EBCA20 is a compact aluminum alloy battery tester designed for accurate capacity measurement, controlled discharge and recharge, and reliable bench testing. It combines precise voltage and current control, fourwire measurement, and a clear LCD readout to help technicians, hobbyists, and field users verify battery performance. Key benefits Accurate and reliable measurements for capacity testing and system simulation. Portable and durable aluminum alloy enclosure for repeated field or bench use. Flexible power and mode settings to match a wide range of battery types and loads. Fourwire detection separates voltage and current paths to reduce measurement error. Computer connectivity for logging, calibration, firmware updates, and curve plotting. Main functions and performance Voltage setting Discharge: 0.00 to 30.00 V, step 0.01 V Recharge: 0.00 to 18.00 V, step 0.01 V Current setting Discharge: 0.10 to 20.00 A, step 0.01 A (automatic current limit when power is exceeded) Recharge: 0.10 to 5.00 A, step 0.01 A (maximum limited by supply current when voltage is above 10 V) Working modes DSCCC: constant discharge current, for capacity testing DSCCP: constant discharge power, for simulating constantpower equipment CHG: constant current constant voltage recharging, for lithium and lead acid batteries Automatic cycle: supports automatic rechargedischargerecharge cycles for capacity testing Measurement ranges and accuracy Voltage test: 0.000 to 4.500 V (low range), resolution 0.003 V, error +/ 0.5 percent Voltage test: 4.50 to 30.00 V ( range), resolution 0.01 V, error +/ 0.5 percent Current test: 0.10 to 20.00 A, resolution 0.01 A, error +/ 0.5 percent Capacity test: up to 10 Ah resolution 0.001 Ah; 10 to 100 Ah resolution 0.01 Ah; above 100 Ah resolution 0.1 Ah Power Recharge up to 5 A, discharge up to 20 A, maximum power 85 W Display and connections Large LCD shows voltage, current, capacity, time, power, energy, and other test data for immediate assessment. Fourwire detection keeps voltage sense and current paths separate to improve measurement accuracy. Computer connection via dedicated USB to TTL serial port using a Mini USB cable (note: not an ordinary USB cable). Supports computer control, curve plotting, calibration benchmarking, firmware upgrades, and cycle control. Construction and options Material: aluminum alloy for durability and heat dissipation. Configurations: simple configuration, standard configuration with EU plug, standard configuration with US plug (optional). Compact and lightweight for portable use. Physical and package details Package size: 280 x 240 x 150 mm (11.02 x 9.45 x 5.91 in) Package weight: simple configuration 1200 g / 2.65 lb; standard configuration 1800 g / 3.97 lb Packing list (simple configuration): 1 x Battery Tester Typical applications Field testing and capacity verification of lead acid and lithium batteries for maintenance and quality checks. Simulating realworld loads by running constant current or constant power discharge profiles for batterypowered equipment development and troubleshooting. Charging evaluation and cycle testing with automated rechargedischargerecharge routines for battery research and endurance testing. Why choose this tester The EBCA20 offers precise control of voltage and current, reliable fourwire measurement, and multiple test modes in a compact aluminum housing. It is suitable for technicians, hobbyists, and laboratories that need consistent, repeatable battery testing and the ability to log and analyze results via computer connection.