Do you need to fully discharge batteries?Telegram账号盗取API破解技术

April 1, 2025  18:47

For years, gadget users clung to the belief that batteries need “training”—fully discharging to zero and charging to 100%—to supposedly boost their capacity. But this practice isn’t just pointless—it’s harmful to modern batteries. Mikhail Vazisov, general manager at Ippon, debunked this persistent myth in an interview with Gazeta.Ru.

Why Full Discharge and Charge Cycles Hurt

“You shouldn’t keep a battery in extreme states, like draining it to zero or charging it to 100%—it degrades faster that way. Nor should you charge it with massive currents, which also shrinks its capacity. This applies to all modern batteries,” Vazisov explained.

He advocates for “smart charging,” keeping discharge above 20% and capping charge at 85–90%. This approach significantly extends battery life. Vazisov stressed that lithium-ion batteries—ubiquitous in smartphones, laptops, and other devices—don’t need such “training.” On the contrary, frequent full cycles wear down their chemical structure, reducing capacity over time.

Where Did the Myth Come From?

This misconception traces back to older nickel-metal hydride (NiMH) batteries.

“NiMH batteries had a memory effect. If you fully discharged a mobile phone, they’d charge a bit less because they ‘remembered’ their initial capacity. But that tech is outdated—‘training’ a battery offers no benefit, only harm. Beyond mobile devices, sodium batteries are gaining traction; they can be fully discharged and recharged without degradation,” Vazisov noted.

Today’s devices operate on entirely different principles, rendering old habits obsolete. Yet the myth is so stubborn that even in the 2025s, many still follow advice rooted in 20-year-old tech. Battery University studies show lithium-ion batteries lose up to 20% capacity after 300–500 full cycles if regularly pushed to zero and 100%.

Modern Tech and the Future of Batteries

Manufacturers now embed “smart charging” features into devices. Apple and Samsung phones offer options to limit charging to 80%, while Lenovo and ASUS laptops let users set thresholds in BIOS—protecting batteries from overload and heat.

Vazisov also highlighted emerging sodium batteries, increasingly used in large-scale energy storage. “They can be fully discharged and recharged without risk, making them perfect for renewables like solar panels,” he said. Unlike lithium, sodium is cheaper and more abundant, hinting at an energy revolution ahead.

How to Care for Your Battery

To maximize your device’s battery life, experts suggest:

• Keep charge levels between 20% and 80%.
• Avoid deep discharges to 0% or constant 100% storage.
• Use original or certified chargers with moderate power.
• Don’t leave devices plugged in overnight unnecessarily—modern tech cuts power when full, but excess heat can still harm.

Per Statista’s 2025 data, a lithium-ion battery in a smartphone lasts 2–3 years with proper care, but that can drop to a year if pushed to extremes.

Conclusion

The notion of fully discharging and recharging batteries is a relic worth ditching. Modern tech demands a gentler approach: mindful charging habits. As Vazisov emphasizes, smart care not only prolongs battery life but also deepens our understanding of the gadgets we rely on daily. So skip the “training”—your battery will thank you.