A backup handset may spend months in a drawer before it is needed again. Preparing it for storage can help avoid discovering a deeply discharged battery when you finally switch it on. This Longhehui guide covers intact phones with their batteries installed. Loose replacement battery stock needs the specific supplier's handling and storage instructions; a phone's settings are not a substitute for those requirements.
Apple recommends storing a device at around 50% charge, powered off, in a cool and moisture-free environment below 32°C. For storage longer than six months, it recommends restoring the charge to 50% every six months. Apple explains that storing a fully discharged device can lead to deep discharge, while prolonged storage fully charged may reduce capacity.
Samsung's Galaxy care guidance recommends approximately 50–70% charge for long-term storage, switching the device off and keeping it in a cool, non-humid place. Follow the instructions for your own model rather than treating one brand's charge percentage or review interval as a universal rule.
Make a simple record: handset model, storage date, displayed charge level, known battery condition and next review date. Back up information you need before setting the device aside. If the phone already has an unresolved battery or charging problem, have that assessed before relying on it as a backup.
Choose a stable storage location away from direct sun, heat and moisture. Power the phone off after preparing its charge. A screen that has gone dark does not necessarily mean the device has been shut down.
| Record | What to enter |
|---|---|
| Device | Full handset model and internal asset reference |
| Storage date | Date the powered-off phone was put away |
| Charge level | Displayed percentage and applicable manufacturer guidance |
| Known condition | Existing warnings or unresolved faults |
| Next check | A review date based on that device's guidance |
| Return to use | Charging response and functional checks |
Illustrative example, not a customer record: A repair shop keeps an intact demonstration iPhone as a backup. The shop records its charge before powering it off, follows Apple's storage guidance and schedules the corresponding review. The log records what was actually observed; it does not assume that another phone will lose charge at the same rate.
When taking the phone out of storage, inspect its condition and follow the maker's charging instructions. Do not assume that an unresponsive handset needs a replacement battery solely because it has been stored. Ask a qualified technician to assess persistent charging or power problems. Avoid repeated forced discharge cycles as a supposed storage recovery method.
If there is swelling, physical damage or an abnormal warning, stop the normal return-to-use process and obtain appropriate service guidance. Do not press the case closed, puncture a pouch or attempt to bypass the charging protection system.
A repair shop may also hold unopened replacement parts. Ask the supplier for the storage conditions, handling instructions, inspection schedule and traceability information applicable to the exact assembly. Record received dates and part references, and agree how nonconforming items should be handled. Do not apply a whole-phone charging routine directly to an uninstalled battery.
If inspection confirms that a replacement is needed, identify the exact handset and battery assembly before ordering. Browse the Longhehui mobile phone battery product center and use our wholesale inquiry checklist to organise models, quantities and destination.
Repair shops and distributors can contact Longhehui (隆和汇) through www.longhehui.com for current product specifications and a quotation. Ask about storage instructions for the actual proposed part and confirm compatibility and order terms before purchasing.
Sources: Apple and Samsung guidance linked above, checked November 3, 2026. This article is a storage-preparation checklist, not a promise of battery shelf life or an instruction for transporting loose batteries.