Resurrecting Dead Batteries: Tips and Tricks for Charging Dormant Electronics

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Why the battery cann’t be charged? Is it a really “dead” battery? You can find the truth and solutions in this article.

In the realm of modern technology, electronic devices have become integral to our daily lives. From smartphones to laptops, these gadgets serve as our lifelines, keeping us connected and productive. However, there’s nothing more frustrating than reaching for a device only to find that its battery is dead and refuses to charge. In this article, we’ll explore why dormant electronics struggle to charge their batteries and provide practical tips and tricks for resurrecting those dead batteries.

Understanding the Problem:

The phenomenon of dead batteries in dormant electronics stems from various factors, including the device’s charging algorithm, battery management system (BMS), and the nature of lithium-ion batteries. When left unused for extended periods, batteries can enter a deep discharge state, where their voltage drops below a critical threshold. This triggers the BMS to activate a low-current trickle charge mode, which may not be sufficient to revive the battery to a level where it can accept a full charge.

Tips and Tricks for Resurrecting Dead Batteries:

  1. Perform a Soft Reset: Sometimes, a simple reset can kickstart the charging process. For devices with removable batteries, try removing the battery, waiting a few minutes, and then reinserting it. For devices with non-removable batteries, performing a soft reset by holding down the power button for a few seconds may help.
  2. Use the Right Charger: Ensure that you’re using the original charger or a compatible charger recommended by the manufacturer. Using a low-quality or incompatible charger can hinder the charging process and even damage the battery.
  3. Check the Charging Port: Inspect the charging port for any dust, dirt, or debris that may be obstructing the connection. Use a can of compressed air or a soft brush to clean out any debris gently.
  4. Try a Different Outlet or Power Source: Sometimes, the problem may lie with the power source rather than the device itself. Try charging the device from a different outlet or using a different power source, such as a computer USB port or a power bank.
  5. Allow Sufficient Charging Time: If the battery is deeply discharged, it may take some time for it to reach a level where it can accept a full charge. Be patient and allow the device to charge for several hours uninterrupted.
  6. Perform a Battery Calibration: Some devices may benefit from a battery calibration process, where the BMS is recalibrated to accurately measure the battery’s capacity and state of charge. Check the device’s user manual or manufacturer’s website for instructions on how to perform a battery calibration.
phone battery(1)
smart phone battery

Why does the lithium ion battery go to “sleep”?

One of the primary culprits behind this issue is the deep discharge state that batteries enter when left unused for an extended period. As the battery voltage drops below a certain threshold, the BMS activates a low-current trickle charge mode to prevent over-discharge. However, this trickle charge mode may not be sufficient to bring the battery voltage back up to a level where the device’s charging circuit can initiate a full charging cycle.

Compounding the problem is the fact that some devices continue to draw power from the battery even when they’re not in use. Background processes, syncing operations, and other system functions can gradually deplete the battery, further exacerbating the charging challenges.

So, what can be done to address this issue and ensure that idle electronics can charge their batteries effectively?

Firstly, manufacturers can take steps to optimize their devices’ charging algorithms and BMS calibration. By fine-tuning these systems to better recognize and handle low-voltage situations, devices can more reliably initiate and complete charging cycles even after prolonged periods of inactivity.

Additionally, implementing battery health monitoring systems can help prevent batteries from entering deep discharge states in the first place. These systems can periodically check the health of the battery and initiate maintenance charging cycles as needed to ensure optimal battery performance.

How to prevent this issue from happenning for end users?

On the user end, there are also steps that can be taken to mitigate charging challenges in idle electronics. Educating users about proper battery maintenance practices, can help prolong battery life and prevent charging issues.

  1. Avoid Deep Discharges: Try not to let the battery completely drain before recharging. Regularly charging your device when the battery level drops to around 20-30% can help extend its lifespan.
  2. Use Original Chargers: Whenever possible, use the charger provided by the device manufacturer or a reputable third-party charger recommended for your device. Using incompatible chargers can damage the battery and affect its performance.
  3. Avoid Extreme Temperatures: High temperatures can accelerate battery degradation, while very low temperatures can temporarily reduce battery capacity. Keep your device within the recommended temperature range to maintain battery health. Charge the battery at room temperature, like 25℃.
  4. Limit Fast Charging: While fast charging is convenient, it can generate excess heat, which can degrade the battery over time. Use fast charging sparingly and opt for regular charging when possible, especially overnight.
  5. Optimize Settings: Adjust your device’s settings to minimize power consumption. Reduce screen brightness, disable background apps and services, and enable power-saving modes to conserve battery life.
  6. Avoid Overcharging: Once your device reaches full charge, unplug it from the charger to prevent overcharging. Leaving your device plugged in for extended periods can degrade the battery over time.
  7. Use Battery Saver Modes: Many devices offer battery saver modes that optimize performance and limit background activity to extend battery life. Enable these modes when your battery is running low to prolong usage.
  8. Update Software: Keep your device’s operating system and apps up to date. Software updates often include optimizations that can improve battery life and performance.
  9. Store Properly: If you’re storing a device for an extended period, partially charge the battery (around 50%) and power it off. Store the device in a cool, dry place away from direct sunlight to prevent battery degradation. Store the battery at the termperature of -5℃-35℃ or recommended 25±5℃. Check the battery and recharge them every three months if long time no using.
  10. Exercise the Battery: Occasionally, allow the battery to fully discharge and then recharge it to recalibrate the battery gauge. This can help maintain accurate battery level readings over time.

Conclusion:

Dead batteries in dormant electronics can be a frustrating challenge, but with the right tips and tricks, they can often be resurrected. By understanding the factors contributing to charging issues in dormant devices and implementing practical solutions, you can breathe new life into your electronics and keep them running smoothly for years to come.

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about Author
Sophia Du

Hi, I’m Sophia Du, your go-to battery expert and writer. With over a decade of experience in the battery industry, I’m here to share valuable insights and solutions through my blog. As a dedicated mom and seasoned Sales Manager, I promise quality, reliability, and timely advice. Welcome to my world of batteries!

about Promax

As a successful lithium-ion battery manufacturing company, we have had the opportunity to gain valuable insights into the industry and the challenges that come with it. In these articles, we will share our journey and experiences in the field of lithium-ion batteries. Get ready, go!

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