A station ready for when you need it.
iPhone and iPad · iOS 26 or later · Available now
CellKeeper helps you care for portable power stations between uses and keep a reserve ready for power cuts or a trip. Choose your current plans, set a reserve target and receive reminders you control.
Care that fits your plans
- Keep a reserve for expected power cuts, or use general idle-storage guidance when you do not expect to need the energy soon.
- Choose an optional date to prepare your station before a season, trip or expected disruption. CellKeeper does not forecast outages.
- Log the charge you read on the station and see your charge and cycle history.
- Follow a maintenance procedure step by step when your model needs it and reliable power is available. You confirm the physical work yourself.
Your reminders, your choice
Charge check-ins and optional cycle reminders can be adjusted per station. A suggested everyday backup reserve is 90 percent; you can choose another target. This is general app guidance, not a manufacturer-approved limit or a guarantee of runtime or battery safety.
Across your devices
Your stations, history, procedure progress and daily reminder time can sync privately through your Apple Account using iCloud. Transfers may take time. Notification permission remains separate on each device, and you can keep using local data when iCloud is unavailable.
One station to start
CellKeeper includes one free station and free single-outage calculations. An optional one-time CellKeeper Plus purchase adds more stations, repeating outages with grid recharging, and solar planning. Prices and availability are shown by the App Store before purchase. There is no CellKeeper subscription.
Guidance, not hardware control
CellKeeper does not connect to or control your power station. Adjust charging power and charge limits in the manufacturer's app or on the device. Follow the exact model's instructions for storage, discharge endpoints, charging and warranty conditions.
CellKeeper is an independent app and is not affiliated with or endorsed by power-station manufacturers. Brand names identify your own equipment.