Li-Battery Curtain Motor: Slow Flashing Red Light and Can Not to Operate

Customer Conversation Record

Customer:
Good morning. I need your help. The blind motor doesn’t move. I tried to delete all limits, but it still doesn’t work. When I press the remote control, the motor makes a “D” sound.

Tracy:
It needs to be charged. The “D” sound means the battery is out of power and needs

Customer:
I charged it. It keeps blinking red. What does it mean?

Tracy:
It needs to charge for 4-6 hours. Because the engineers were concerned about frequent recharging if the motor was used without a full charge, they set up the program so that when it ran out of power, it needed to be 60-70% full before it could be activated again for use.

拉珠电机:实现让普通的卷帘电机变智能

Tracy:
When was this bead pulling blind chain motor purchased? We need to check if you are using the correct charging cable.

Customer:
Is this normal?

Tracy:
May I ask what configuration of charger output you are using?
It’s best to use a charger with 5V/2A or higher. The 5V/1A will charge slower.

If you see the red light flashing slowly, you need to unplug and plug the cable again. If the red light is always on, it’s charging normally. If the red light is flashing slowly, the charging will be turned off. Some chargers with low power charge slowly, which will cause the charging time to exceed the limit, thus the red light flashes slowly. If the charger is low-powered, it will charge slowly, then charge for a long time and still not full, then exceed the charging limit time, so it is not charging properly (red light flashing slowly). Then it is not full, so it does not activate the motor, so it cannot be used.

Customer:
How much should I charge it before I can use it?

Tracy:
It can be used normally when it is charged to 60%-70%. Because the engineers were concerned about always having to recharge if they continued to use it without a full charge, they set up the program so that when it ran out of power, it needed to be 60-70% full before it could be activated again for use.

If you don’t normally use it to the point of running out of power, you don’t need to charge it to 60-70% to use it because it’s not going into hibernation. (When it goes into hibernation, it needs to be charged to 60-70% to activate)

Tracy:
So daily you can configure a solar panel for charging, it will be much more convenient.

Solution Steps Summary

1. Check Battery:

When you hear the “D” sound, it means the battery is out of power and needs charging.

2. Proper Charging:

  • Use a charger with 5V/2A or higher output 5V3A charger. The 5V/1A charger will charge slower. (Charging voltage is limited to 5V only, not 9V, 12V)
  • If you see the red light flashing slowly, you need to unplug and plug the cable again. If the red light is always on, it’s charging normally. If the red light is flashing slowly, the charging will be turned off.

3. Charging Time:

  • Ensure charging for 4-6 hours to reach 60-70% power.
  • Using a low-power charger can cause the charging time to exceed the limit, leading to the red light flashing slowly and improper charging.
  • Charging with an extension cord can also reduce the charging current, extending the charging time.

4. Daily Maintenance:

  • If the battery is not fully used, you don’t need to charge it to 60-70% to use it.
  • It is recommended to configure a solar panel for daily charging to avoid frequent charging.

5. Don’t let the battery completely run out of power.

  • Over-discharge of the battery can damage its lifespan. The motor has enough standby time (3-4 weeks) after a low battery alarm, so please charge it in time. If you always wait until the battery is exhausted before charging, the battery will easily over-discharge, damaging its lifespan.
    • Note: For early versions of lithium battery motors, if the battery is over-discharged, you need to clear the travel limits after fully charging to use it normally.
    • The current version does not require clearing the travel limits after fully charging to use.

Special Situations

Customer Issue:

Using other USB fan charging cables, resulting in inability to charge or control the motor.

Customer Service Suggestion:

Use the original factory charging cable for charging.

Note:

Using a low-power charger (such as 5V/1A) will charge slowly, possibly leading to excessive charging time, triggering the charging protection mechanism, and improper charging. When the battery is not fully charged, it cannot activate the motor. It is recommended to use a charger with 5V/2A or higher output for charging.

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