The max voltage can accept is 120V
Max discharge current is 20A
You can set up discharging current and cut-off voltage.
The tester supports automatic discharge and with a portable external battery charger it allows automatic charge.
In order to get the good result,please charge full first before you do the test
It is not only a capacity tester,,also can be a discharger,a good tool when fix battery pack
No need extra AC power supply,connect to the battery pack directly 
