XHORSE Dolphin XP005L Battery Working Principle & Charging Failure Analysis:
1. Battery Structure
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The battery consists of 7 individual cells managed by a Battery Management System (BMS).
2. BMS Communication Failure Symptoms
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If the battery charge level is missing from the display, the BMS has stopped communicating. Possible causes:
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The green connector is not fully seated in the battery pack.
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- The BMS entered sleep mode due to critically low pack voltage (non-recoverable if voltage drops too low).
3. Charging Failure Causes
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Failed cell(s): A single faulty cell can prevent charging.
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Voltage imbalance: The BMS halts charging if cell voltages deviate beyond safe limits.
A battery refusing to charge can be caused by a failing cell in the battery pack. To diagnose:
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Go to Settings and touch the Battery to open the battery screen.
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On the VS, you will see the voltage of each cell.
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The 8th and final voltage reading shows the difference between the highest and lowest cell voltages.
The BMS will likely stop charging if it detects an abnormal cell voltage.
