If it is going to be unused for a long period, Apple recommends leaving it at around 50% charged (not full, and not empty).
You should only use high quality USB power sources to charge your iOS device.
At what percentage should I charge my iPhone?
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.
Is it bad to charge your phone at 50 percent?
If you’re storing your phone unused for an extended amount of time, it is advisable to keep the battery charged at 50 percent before turning it off for storage. For even longer periods, they recommend turning on the phone every six months or so and plugging it in to charge it back to 50 percent.
Can you charge your iPhone at 50?
Do not fully charge or fully discharge your device’s battery — charge it to around 50%. Conversely, if you store it fully charged for an extended period of time, the battery may lose some capacity, leading to shorter battery life. Power down the device to avoid additional battery use.
Is it OK to not charge iPhone fully?
It’s a common myth that you must charge your rechargeable batteries until they’re completely full and not charge them until they’re empty. Unplugging your iPhone before it’s fully charged does not damage the battery or its capacity.
How do I keep my battery 100% healthy?
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100 Percent iPhone Battery Health – How I do it – YouTube
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What is the 40 80 rule?
Overcharging, undercharging, extreme temperatures, these are all variables that can shorten the life of your lithium-ion battery (used in iPhones and Androids). Instead, keep your battery life somewhere between 40 percent and 80 percent.