According to https://www.apple.com/batteries/maximizing-performance/:
Store it half-charged when you store it long term.
If you want to store your device long term, two key factors will affect the overall health of your battery: the environmental temperature and the percentage of charge on the battery when it’s powered down for storage. Therefore, we recommend the following:
- Do not fully charge or fully discharge your device’s battery — charge it to around 50%. If you store a device when its battery is fully discharged, the battery could fall into a deep discharge state, which renders it incapable of holding a charge. 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.
- Place your device in a cool, moisture-free environment that’s less than 90° F (32° C).
- If you plan to store your device for longer than six months, charge it to 50% every six months.
Depending on how long you store your device, it may be in a low-battery state when you remove it from long-term storage. After it’s removed from storage, it may require 20 minutes of charging with the original adapter before you can use it.
Batteries will discharge over time even if the device is powered off. I don't know that I'd recommend just shutting it down and storing it for an extended period of time like that.
Is there a friend or relative you can leave it with? If so, I'd say the best plan would be to have them plug it in to charge it overnight once a month, being sure to unplug it and power it down completely (not just let it go to sleep) when charging is complete. and store it until the next month. You don't want to let the battery discharge completely as that may damage its capacity to hold a charge in the long term.
Hi
Leave it will someone else you trust for 6 months put simlock on so it cannot be used
Ask them to charge it up once/ twice a week.
Cheers
Brian
Pc if you leave for 6 months without charge you may need a new battery.
I want to switch off my iphone 6 for next 6 months and since the mobile won't be with me so i won't be able to charge it. Wanted to know the proper way to keep the iphone powered off for months safely.
