original TF03K Counter Meter Battery Capacity Indicator Voltage Current Display TTL232 Li-ion Lithium lifepo Lead Acid eBike RV

 2.Click the 'up'or'down” key to select the setting items:

       CAP—capacity setting:an initial capacity has been set at factory, please set it according to the real capacity;
       FULL U—full voltage setting:when the voltage is higher than it the percentage will be 100%;
       ZERO U—zero voltage setting:when the voltage is lower than it the percentage will be 0%, backlight off , if you keep discharge the LCD flicker, the alarm indicator display and buzzer warning;
       Alarm—alarm setting:when the capacity is lower than it the LCD flicker and buzzer warning.
      Note:Generally the FULL U and ZERO U do not need to set. The default is 0V, which is the invalid. If you want set, please understand the actual charge and discharge voltage of battery firstly.     3. Select'CAP”and click'OK'key to enter the capacity setting; The set bit flicker, click the'OK'key can select other bits, click the'up”or'down'key to plus and minus the value; after this click the'back'key to quit capacity setting;
    4. We can set other items with the same method as capacity.When all the items are set and all the values are correct, click the "back" key to save the set and quit the setting menu;
    5. Cut off and Re-power,it will work normally.