Internal Memory; Battery Status Check; Auto Power-Off - TENTECH MD10KVx Manual De Uso

8.7. Internal memory

This equipment has an internal memory for up to 4000 measured values
(approx. 29 polarization index tests). When the memory free space is
smaller than 30%, the display will show a warning message with the
remaining free space:
To avoid lost of data, always download and erase the memory after finish
the measurements.

8.8. Battery status check

Hold the  key pressed in order to check the battery status during
measurements. The analogue bargraph will give an approximate visual
representation of the remaining charge percentage; additionally, the
display will show the message "Battery OK" if the charge is enough, or
"Battery Low" if the charge is low. In this last case, it is highly advisable
to charge the battery before using the apparatus. If battery charge is
under 20% of the total, the message Battery Low will automatically
appears on the display.

8.9. Auto power-off

The MD-10KVx auto-turns off after 10 minutes of inactivity, or after 35
minutes of measuring without checking the battery status.
External Voltage:
U< 15V
Low Memory! ( 10%)
500V
29