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Fixing LiPo Batteries with Dead Cells: Reviving Your Power Source


Lithium Polymer (LiPo) batteries have gained significant popularity due to their high energy density, lightweight design, and ability to deliver substantial power. However, over time, LiPo batteries can develop dead cells, which can greatly diminish their overall performance and lifespan. In this blog post, we will explore how you can revive your LiPo battery by fixing dead cells, allowing you to extend its usability and maximize its potential.

Understanding Dead Cells in LiPo Batteries

Before diving into the process of fixing dead cells, it’s essential to understand what they are and how they impact the overall performance of your LiPo battery. Dead cells occur when individual cells within the battery pack fail to maintain their voltage capacity or exhibit irregular discharge patterns. This leads to a reduction in the battery’s overall voltage and a decrease in its capacity to store and deliver power.

Identifying LiPo Batteries with Dead Cells

To begin the process of fixing a LiPo battery with dead cells, you must first identify which cells within the battery pack are causing the issue. This can be done using a specialized LiPo cell checker or a multimeter set to voltage mode. Carefully measure the voltage of each cell, ensuring they are within an acceptable range. If you notice a significant voltage discrepancy between cells or find one or more cells with abnormally low voltage readings, these are likely the dead cells that require attention.

Restoring Dead Cells

Fixing dead cells in LiPo batteries can be a delicate process that requires caution and patience. Here are some steps to help you restore the dead cells:

  1. Balance Charge: Connect your LiPo battery to a balance charger specifically designed for LiPo batteries. Set it to the balance charge mode, which will equalize the voltage of each individual cell. This process may take some time, so allow the charger to complete the balance charge cycle.
  2. Individual Cell Discharge: If the balance charge didn’t revive the dead cells, you can try manually discharging each individual cell that is showing a significantly lower voltage. Use a discharger or a resistor to discharge the low-voltage cells slowly. Monitor the voltage during this process and ensure it doesn’t drop below the manufacturer’s specified minimum voltage threshold.
  3. Cell Recovery: After discharging the low-voltage cells, it’s time to attempt cell recovery. Connect the affected cells to a LiPo cell recovery charger, which applies low current pulses to stimulate the damaged cells. This process helps recondition the cells and bring them back to life. Follow the instructions provided by the recovery charger manufacturer for optimal results.
  4. Rebalance Charge: Once the cell recovery process is complete, reconnect the LiPo battery to a balance charger and perform another balance charge. This will ensure that all cells have regained their voltage balance.

Safety Considerations

When dealing with LiPo batteries, it’s crucial to prioritize safety. Here are some key safety considerations:

  1. Work in a well-ventilated area to minimize the risk of exposure to potentially harmful gases.
  2. Use proper protective gear, including gloves and safety glasses, to protect yourself from accidental spills or mishaps.
  3. Follow the manufacturer’s guidelines and instructions for the battery, charger, and recovery equipment to ensure safe operation.
  4. Never leave a LiPo battery unattended while charging or discharging.


Fixing LiPo batteries with dead cells is a practical way to extend their lifespan and restore their performance. By understanding the causes and effects of dead cells, identifying the affected cells, and employing appropriate recovery techniques, you can breathe new life into your LiPo batteries. Remember to prioritize safety at all times