6 Common Myths About Smartphone Batteries - SellUp - Blogs

6 Common Myths About Smartphone Batteries


In the realm of smartphone use, misconceptions about battery care can lead to unnecessary worries and practices. Here, we debunk five of the most prevalent myths surrounding smartphone batteries, applicable to both iPhone and Android users.

1. Charging Overnight Damages the Battery - False

Many believe leaving your smartphone charging overnight will overcharge and damage the battery. Modern smartphones are smarter than we give them credit for; they're designed to stop charging once they reach 100%. Overcharging isn't the concern it once was thanks to advanced battery management systems.

Good practice: Advanced smartphones are equipped with intelligent charging circuits, preventing damage from overnight charging. However, for optimal battery health, it's advisable to keep the battery level between 20% and 80%.

2. You Need to Fully Drain Your Battery Before Recharging - False

The myth that you must fully deplete your battery before charging it again stems from the "memory effect" found in older nickel-cadmium batteries. Today's lithium-ion batteries don't suffer from this issue. In fact, deep discharges can be harmful and shorten the battery's lifespan.

Good practice: Modern lithium-ion batteries have a limited charge cycle life. Keeping your battery between 30% and 80% can help extend its lifespan beyond the typical 300 to 500 charge cycles.

3. Closing Apps Saves Battery Life - False

While intuitively it might seem like closing background apps would save energy, the opposite is often true. Apps in the background are in a suspended state and don't use much power. Reopening these apps from scratch can use more energy than leaving them in standby.

Good practice: Instead of closing apps, focus on removing unused ones from your device.

4. Using Non-Brand Chargers Damages Batteries - False

The concern here is more about the quality than the brand. High-quality, third-party chargers that adhere to safety standards are generally safe for your smartphone. However, poorly made chargers can indeed pose a risk to your battery and phone's overall health.


Good practice: Prioritize charger quality over brand. Opt for chargers with recognized certifications, such as UL or CE marks.

5. Cold Weather Permanently Damages Batteries - Somewhat false

Cold weather can temporarily reduce your battery's performance because the chemical reactions within are slowed. However, this condition is usually reversible once the battery warms up. Extreme temperatures, both hot and cold, can stress the battery over time, but occasional exposure to cold weather is unlikely to cause permanent damage.

Good practice: In Singapore we do not encounter extreme cold weather. However, we must avoid high temperatures, like leaving your phone in direct sunlight on a car dashboard, which can lead to overheating.

6. If Your Battery Dies, You Need A New Device - False

It's not true that you need a new gadget if your battery fails. When your device no longer holds a charge all day or powers down unexpectedly, these are indicators that the battery may be on its last legs. Other symptoms might be a quieter speaker and apps that run more slowly. However, a faltering battery doesn't automatically require purchasing a new device. Opting for a battery replacement can often be a cost-effective solution to rejuvenate aging technology.

Good practice: Replace the battery in your device may be the best solution. It will usually takes less than an hour and cost much lesser than you expected. Find verified repair vendors in Singapore to get your device restore and running. 


Understanding the real needs and limitations of smartphone batteries can help optimize their performance and lifespan. By debunking these myths, users can foster better charging practices and alleviate unnecessary concerns over their device's battery health.

For iPhone and Android users alike, it's essential to focus on practical battery maintenance tips—like avoiding extreme temperatures, using quality charging equipment, and understanding that modern smartphones are equipped with technologies to manage battery health effectively.

Remember, technology is always advancing, and so do our gadgets' capabilities to take care of their batteries.

Need help?

Let us know if you have any queries on our service. Whatsapp or call us at 9336 0575 or email us at service@sellup.com.sg