Possible cause: DC seat damaged by external force.
Solution: The structure of DC holder is being improved and verified in trial production.
Possible cause: SMT process chip components have less tin, false soldering and other problems.
Measures: Strengthen the control of SMT process to ensure the welding quality of SMD components.
Solution: Conduct aging charge/discharge test and inspection in the production of finished products to ensure that the battery and charging function is normal.
Possible cause: bad plug.
Measures: Solve the problem of bad plugs in the production process.
Possible cause: the lead wire of the fire cow is damaged by external force.
Note to users: Avoid applying external force to the lead wire of the Fire Ox in the process of use to prevent damage.
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