Is The 40 80 Battery Rule Real?

What is the 40 80 rule?

The 40-80 rule is a way to maximize the lifespan of your battery by limiting the damage ; specifically it refers to not discharging below 40% and not above 80%.

Charging above 80% becomes increasingly cause damage to the battery life cycle.

Normally the life cycle of lithium ion battery is 300 to 500 charge cycle..

Can I charge my phone to 100 percent?

The thing is, Li-ion batteries don’t really need to be charged to 100% — especially since that stresses the battery. However, it’s better to let the battery partially discharge and charge throughout the day as needed. …

Why is it bad to charge your phone to 100?

Specifically, if you often charge your phone overnight or keep it plugged in for hours after it’s reached 100%, you’re accelerating the aging process of lithium-ion smartphone batteries. … No matter what you do, your phone’s battery capacity — which translates to its lifespan — will degrade as you use it.

How do I keep my battery at 100%?

10 Ways to Make Your Phone Battery Last LongerKeep your battery from going to 0% or 100% … Avoid charging your battery beyond 100% … Charge slowly if you can. … Turn off WiFi and Bluetooth if you’re not using them. … Manage your location services. … Let your assistant go. … Don’t close your apps, manage them instead. … Keep that brightness down.More items…

Can you charge your phone at 50%?

The golden rule is to keep your battery topped up somewhere between 30% and 90% most of the time. Top it up when it drops below 50%, but unplug it before it hits 100%. For this reason, you might want to reconsider leaving it plugged in overnight.

How do I prolong battery life?

Use battery-saving modesReduce screen brightness. The easiest way to conserve battery life while maintaining full function is to reduce the brightness of the screen. … Turn off the cellular network or limit talk time. … Use Wi-Fi, not 4G. … Limit video content. … Turn on smart battery modes. … Use Airplane mode.Jul 31, 2017

Should you only charge your phone to 80?

Ending a charge at 80 percent is better for the battery than topping all the way up to 100 percent. Use fast charging technologies sparingly and never overnight. Heat is the battery killer. Don’t cover your phone when charging and keep it out of hot places.

Should I charge my phone to 80 or 100?

The Best Thing to Do: Plug it in when the phone is between 30-40%. Phones will get to 80% quickly if you’re doing a fast charge. Pull the plug at 80-90%, as going to full 100% when using a high-voltage charger can put some strain on the battery. Keep the phone battery charge between 30-80% to increase its lifespan.

Is it okay to charge your iPhone at 40?

Apple recommends, as do many others, that you try to keep an iPhone battery between 40 and 80 percent charged. Topping up to 100 percent isn’t optimal, although it won’t necessarily damage your battery, but letting it regularly run down to 0 percent can prematurely lead to a battery’s demise.

Does charging your phone overnight ruin the battery?

The official word is to keep your phone charged but not fully charged. Your battery will stop charging at full charge, but once it drops to 99%, it will need more energy to get back to 100. This is unnecessary and it eats away at your battery’s lifespan.

Should I only charge my iPhone to 80?

You Shouldn’t Keep Your Battery at 100% Lithium-ion batteries charge to 80% faster than previous battery technologies did. For most people, 80% is enough to make it through the rest of the day, so it gives you what you need sooner.