W291855 resistance of the battery tester, online, accurate, rapid, and convenient diagnostic battery quality equipment. I. OVERVIEW: W291855 resistance of the battery tester is my company independently develop, produce the first high-precision internal battery resistance testing instruments. I will sum up years of battery experts advanced battery technology, combined with large-capacity battery stops working group, as well as the day-to-day maintenance needs, it has developed a high-precision portable resistance tester, the product small size, weight light, easy to carry. The product is "dynamic load DC Law" as a means of on-line measurement of the resistance battery, the battery technology in the large-capacity measurement in the field of the world's leading status. The method used 20 to 70 A discharge current to the battery discharge test moment, in the high noise environment of the battery test, Float voltage on the interference measurement process can be negligible, and therefore be able to accurately measure Float-state batteries resistance. W291855 at the same time can be measured and recorded single battery internal resistance, resistance connection between the battery, the battery voltage monomer. W291855 real-time measurement data storage, and provide different time accurate historical data, and report each cell measuring time, measurement data can be permanently preserved. W291855 comes with RS-232 serial port, the tester can be connected to the data lines through the computer, and then use the "battery data management system" withdraw all measurement data, create data tables, and other forms of monomer column of the report, and use scientific diagnostic model analysis, judgement monomer battery health status and battery capacity. W291855 built-in lithium battery, the battery is fully charged in the case, can be carried out 16 hours of continuous testing. Own wall inserted in the AC charger to work, and can simultaneously charge. The product can be widely used in battery performance rapid detection, battery routine maintenance, installation of the battery acceptance. Second, the functional characteristics: 1. Single voltage: w291855 battery Float in the state of voltage measurement. Measuring range