Every mobile phone user has, at some point, wondered about the lifespan of their phone battery. Especially, what happens if the phone is left unused for an extended period. What we often overlook, however, is the profound role our device’s battery plays in its functionality. The longevity of a phone battery not only ensures seamless usage but also contributes significantly to the overall performance of the device.
The battery continues its life cycle even when your phone is not in use. Generally, an unused phone battery will last between three to five years if properly stored. However, the actual lifespan depends on several factors, including battery type, storage conditions, and environmental factors.
If you are interested in preserving your phone’s battery life or want to store a phone for a long period, knowing how long a battery will last and how to store it properly can be invaluable. Let’s dive into the details and explore the world of phone batteries.
What Determines the Lifespan of a Phone Battery?
Battery Chemistry: Lithium-ion and Lithium-Polymer
As a rule of thumb, two main types of batteries power our smartphones today: lithium-ion and lithium-polymer. Each of these battery types has a different lifespan and discharge rate due to their varying chemical compositions.
Charging Cycles Explained
A charging cycle significantly influences the lifespan of your phone battery. A full cycle is when you charge a battery from 0% to 100%, then discharge it back to 0%. This cycle impacts battery health, with most smartphone batteries designed to withstand around 300 to 500 full charge cycles.
Impact of Temperature and Storage Conditions
Temperature and storage conditions also play a critical role in the lifespan of a phone battery. Excessive heat or cold can deteriorate the battery’s health over time. Moreover, improper storage, such as leaving your phone in a humid environment, can also affect its longevity.
How Long Can a Phone Battery Last If Not Used?
What Happens to a Phone Battery When Not in Use?
Contrary to what many might believe, a phone battery does not simply pause its processes when not in use. Instead, it enters a state of slow discharge. The reason behind this is the inherent design of electronic devices that continue to draw a minuscule amount of power even when switched off. This power maintains certain features such as the internal clock or system updates. Therefore, a completely unused phone battery will not remain at its full capacity indefinitely but will start to lose charge gradually over time.
The Shelf-Life of Lithium-ion and Lithium-Polymer Batteries
Lithium-ion and Lithium-polymer batteries, the most common types of phone batteries, have an average shelf-life of 2 to 3 years. It’s important to note that this shelf-life refers to the total lifespan from the point of manufacturing, regardless of whether they’re used or not. Therefore, if you buy a new phone and don’t use it at all, the battery will still start to degrade from the moment it was manufactured.
Real-life Estimates
In practical terms, an unused smartphone battery can retain its charge for about 3 to 5 years if stored under optimal conditions. The term optimal here refers to a dry place with a moderate temperature, neither too hot nor too cold. Also, it’s recommended to keep the battery at about 40-60% charge level before storage, as a full or completely drained battery can deteriorate faster.
How Does Non-use Affect Battery Health?
The Concept of Battery Discharge When Not in Use
Even when not in use, batteries continuously discharge due to the inherent self-discharge characteristic of battery chemistry. This process is slower in lithium-based batteries compared to their nickel-based counterparts, but it still happens. When a battery discharges while not in use, it gradually loses its ability to hold a charge, impacting its overall health.
The Effect of Deep Discharge on Battery Health
When a battery discharges completely (a state known as ‘deep discharge’), it can be harmful to the battery’s health. This is particularly true for lithium-based batteries, as they can become unstable if left discharged for a long time. This instability can potentially lead to a shorter lifespan or, in some cases, render the battery unusable.
How to Prolong the Life of an Unused Phone Battery?
Optimal Storage Conditions for Unused Phone Batteries
If you plan to not use your phone for an extended period, it’s crucial to store it properly to prolong the battery life. As mentioned earlier, a moderate-temperature environment without extreme cold or heat is best. Further, it should be stored in a dry place, away from moisture, which could potentially harm the electronic components.
The Importance of Partial Charge Before Storage
Another significant factor is the battery’s charge level before storage. It’s generally recommended to store the phone at a 40-60% charge level. This is because a completely full or empty battery can lead to quicker battery degradation.
Frequency of Recharging During Long-term Storage
If you’re storing the phone for more than a few months, it’s a good idea to recharge the battery to around 50% periodically. This can help prevent the battery from falling into a deep discharge state, which, as discussed earlier, can be harmful to the battery’s longevity.
Can You Revive an Unused Phone Battery That Has Lost Its Charge?
Understanding the Process of Battery Reconditioning
Battery reconditioning refers to the process of restoring a battery’s ability to hold a charge. For
lithium-based phone batteries, there are limited options for reconditioning an unused battery that has lost its charge. Unlike older battery chemistries, lithium-based batteries are not easily revived once they have entered a deeply discharged state.
Steps to Revive an Unused Battery
If you find yourself with an unused phone battery that has lost its charge, you can try the following steps to potentially revive it:
- Inspect the Battery: Check the battery for any physical damage, such as swelling or leakage. If you notice any damage, it’s best not to attempt to revive it and instead seek professional assistance.
- Charge the Battery: Connect the battery to a suitable charger and allow it to charge for a sufficient amount of time. Be patient during this process, as deeply discharged batteries may take longer to show signs of recharging.
- Monitor the Battery: Keep an eye on the battery while it’s charging. If you notice any abnormal behavior, such as excessive heat, smoking, or an unusual odor, immediately disconnect the battery and discontinue the charging process. This could indicate a more serious issue and should be addressed by a professional.
- Consider Replacement: If the battery fails to regain its charge even after attempting to revive it, it may be necessary to replace it. Lithium-based batteries have a limited lifespan, and if they have deteriorated significantly, revival attempts may not be successful.
Precautions to Take
When attempting to revive an unused phone battery, it’s important to follow these precautions to ensure your safety and protect the battery:
- Avoid Overcharging: Do not leave the battery connected to the charger for an extended period. Overcharging can lead to excessive heat generation and potential damage to the battery.
- Use Original Chargers: Whenever possible, use the original charger that came with your phone or a charger recommended by the manufacturer. Using uncertified chargers can pose risks to both the battery and the device.
- Handle with Care: Treat the battery with care, avoiding unnecessary impacts or rough handling. Mishandling the battery can cause physical damage and compromise its integrity.
- Seek Professional Help: If you are unsure about the process of reviving a battery or if you encounter any issues during the charging process, it’s advisable to seek assistance from a professional technician or contact the device manufacturer for guidance.
Frequently Asked Questions
What happens if a phone is left unused for a long time?
When a phone is left unused for an extended period, the battery gradually loses its charge. This can result in a decreased overall battery capacity and may require recharging before the phone can be used again.
Can an unused battery explode or leak?
While it’s uncommon, there is a risk of an unused battery exploding or leaking, particularly if the battery is damaged or exposed to extreme temperatures. It’s important to handle and store batteries properly to minimize the chances of such incidents.
How often should I charge an unused phone battery?
If you are storing an unused phone battery for an extended period, it’s recommended to periodically charge it to around 50% capacity every 3 to 6 months. This helps prevent the battery from entering a deeply discharged state and maintains its overall health.
Conclusion
In conclusion, the lifespan of a phone battery when not in use depends on various factors such as battery type, storage conditions, and charging habits. While an unused battery can last around 3 to 5 years under optimal conditions, it’s important to understand the impact of self-discharge and deep discharge on battery health.
To prolong the life of an unused phone battery, it is crucial to store it in a moderate-temperature environment and maintain a partial charge level to prevent deep discharge. Additionally, periodically recharging the battery during long-term storage can help maintain its health.
While it may be challenging to revive a deeply discharged unused battery, attempting to recharge it under safe conditions can sometimes yield positive results. However, if the battery fails to regain its charge, it may be necessary to consider a battery replacement.
By following proper storage techniques and understanding the impact of non-use on battery health, you can maximize the lifespan of your phone battery and ensure optimal performance when needed.
Remember, taking care of your phone battery not only prolongs its lifespan but also contributes to environmental sustainability by reducing electronic waste.
Whether you’re storing a spare phone or planning a hiatus from device usage, implementing these practices will help you make the most of your phone battery’s lifespan while preserving its functionality for future use.