https://www.mktester.com/battery-tester/battery-discharge-tester.html Product description： Battery discharge tester can be used as a discharge load, and through the continuous control of the discharge current, discharge with a set constant current. If the discharge duration has reached the set discharge duration, the tester will automatically stop the discharge and record all valuable and continuous real-time data of the process. Battery discharge tester Technical parameter： Applicable battery Lead-acid battery Output voltage DC110V Output current 0-100A Operating mode Used independently or with a constant-current module Protection performance ●Input terminal overvoltage protection, prompts on the LCD; ●Reverse polarity protection, buzzer alarm; ●Overcurrent protection, prompts on the LCD; ●85℃ overheat protection, prompts on the LCD, buzzer alarm. Single battery voltage acquisition The 433RF wireless module supports a communication distance longer than 100 m and monitoring for single battery voltages of 2V, 4V, 6V and 12V. If the total voltage is not beyond the set value, each battery pack will have an unlimited single battery quantity and can monitor one to sixteen RF wireless monitoring modules at the same time. One RF wireless monitoring module can monitor 12 single batteries at the same time.