Battery shows only 1% with no change after charging

• Fault Causes:
  

  1.Insufficient Charging Time (Not a defect, customer misjudgment)

  Troubleshooting: Continue charging until the indicator light turns green. The battery level will reset to 100% after restarting.

  
  

  2.Faulty key switch (Internal short circuit caused by water ingress)

  Troubleshooting: 

  Use multimeter to measure the key switch resistance.

  The standard value is about 0.5 Ω.

  If it's high or unstable, replace the key switch.

  
  

  3.Charging Protection Plug Short Circuit (Corrosion/rust due to water ingress)

  Troubleshooting:

  Unplug the charging protection plug and visually inspect pins for corrosion, green rust, etc.

  Solution:

  Use a hairdryer to dry the affected area and clean off all corrosion marks.

  
  

  4.Main Cables Plug Short Circuit (Water-induced corrosion)

  Troubleshooting:

  Unplug the charging protection plug and visually inspect pins for corrosion, green rust,etc.

  
  

  5.Battery Failure

  Troubleshooting:

  Use multimeter to measure battery voltage

  
  

  If the voltage of a single battery is lower than 7V, it is a serious discharge;

  If the voltage difference between two batteries is greater than 0.7V, it indicates a battery failure.

  Solution: Reactivate the battery or replace the 2 faulty batteries.

  ​

  6. If the above causes are ruled out, controller is faulty

  Solution: Replace the controller.

  
  

  Warranty Period:

  One year (not applicable for human - caused damages such as water ingress or collisions).

  
  

  Required information for warranty claims:

  1. Stacker nameplate photo;

  2. Videos/photos of charging issues;

  3. Photo showing faulty part