ZB2L3 discharge type battery capacity tester 1.2-12V external battery charging capacity and other tests 18650 Tools, single function , by controlling the load and obtaining results of integrated discharge capacity in real time Maximum support 15 V 3A discharged through discharge voltage and current, by itself does not discharge Maximum capacity of statistics support of 9999Ah (9999000 mAh) Automatically identify and develop the proper battery termination voltage can also be adjusted manually Supply voltage: DC4.5-6V (Micro-USB connector) Operating current: less than 70mA Discharge voltage: Resolution 1.00V-15.00V 0.01V Termination voltage range: 0.5-11 , 0 V Compatible with current: 3,000A 0.001A resolution Maximum voltage measurement error: 1% + 0.02 V Maximum current measurement error: 1.5% + -0.008A Maximum battery capacity range: 9999Ah (1Ah = 1000 mAh) higher value when changing the decimal point, when the screen is less than 10Ah X. XXX, as shown above to achieve 10Ah XX. XX, etc. Material:Metal + pc colour:blue Package Contents: 4 x battery capacity tester 8 x Load resistors Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.