Absaar ATEK 4000 Manual page 14

ENG
After charging the battery by 2 minutes, if battery voltage is still <4.5V, LCD flash at 1Hz frequency to display "Lo" and
"real time voltage" alternatively. Red LED light keeps "ON"
ii) 12V: When the battery voltage is between 7.4V and 10V. The charger will work at 12V/Slow mode. Press the
button and change the mode to "Fast", "Low Temp" or "Pause" the charging process respectively. The battery icon
stops scrolling when it is "pause".
After charger the battery by 2 minutes, if battery voltage is still <9V, LCD flash at 1Hz frequency to display "Lo" and
"real time voltage" alternatively. Red LED light keeps "ON"
In these 2 cases, please press the button to detect/check the battery status and start the charging process again.
Don't need to disconnect the AC power and battery cable clamp
Keep charging the battery 4 hours (6V mode)/9 hours (12V mode) and the battery voltage is still below the correct
level, LCD displays Er3. Red LED light keeps "ON".In this case, you must to disconnect the battery cable clamp, or
need to disconnect the power.
Please refer to below Fig. 5 and Fig.6.
Fig. 5: 6V LCD charging block diagram
6