Page 10 2019-05-10
K. OLED screen display
Some information will be displayed on the OLED screen
1. On/off status.
2. DC input voltage.
3. Countdown timer of run time.
4. Charger status.
5. Charging voltage.
6. Charging current.
7. Messages of operating and protection.
Note: The charge current calculation was calibrated to 10 LifePO4 battery cells. The displayed charging current could
be higher than the actual if less battery cells are installed.
L. Application notes and tips
1. How to turn on the power supply
There are 3 ways to turn on the power supply:
(1). Press and hold the knob key for more than 2 seconds.
(2). If external on/off button is connected to J11, Press and hold this button for more than 2 seconds.
(3). Extern on/off control signal changing from 0V to 3.3V-6V will turn on the power
2. How to turn off the power supply
There are 3 ways to turn on the power supply:
(1). Press and hold the knob key for more than 2 seconds.
(2). If external on/off button is connected to J11, Press and hold this button for more than 2 seconds.
(3). Extern on/off control signal changing from 3.3V-6V to 0V will turn the power off.
3. In which conditions the power supply will turn off automatically
(1). If run time is up, the power supply will turn off automatically to prevent battery form possible over discharge.
(2). If any output voltage at J1 or J2 is lower than 3.3V, the power supply will turn off automatically to prevent
battery form over discharge.
(3). If there is short circuit to J1 or J2 output, or the output current is too high, the power supply will go back to
power off shortly after it was turned on.
