The first one is measured by bettery software, which is more than 200 mA smaller than what I actually used (I measured it by USB ammeter), the second one is the charging current when I started the gear, which is similar to that measured by USB ammeter, and the third one is close to full state.
You can also check the number of 94 cycles of the battery, which is close to 1/3 according to the life of 300 cycles. You can also see that the design capacity of the battery is 4000, and now it can reach 3940. The temperature is 10. You can also see that the battery is produced by ATL.
I can view it with ES or RE (I don't like it), and I can view it without root. Every time you open this file, it will be different, because the phone is written in real time, but the TXT file viewer will not refresh it in real time. If someone knows Android programming, make this file automatically refresh like an app, and then they can view battery information instead of engineering mode.