Troubleshooting steps:
① The charging power is affected by the internal power of the battery. When the battery power increases, the charging power gradually decreases. It is recommended to check the charging power in a low battery level state (such as 10%).
② Lithium battery charging is divided into three stages: pre-charging, constant current and constant voltage. The charging current and power decrease with the increase of battery power. When the battery level is 0%, it is in the pre-charging stage with relatively low charging power. It takes more than 4 minutes to charge to return to normal.
③ Please confirm whether the output voltage is sufficient and needs to reach more than 12V. It is recommended to check the charging power again under the driving state.
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