BMX Launches MagSafe Battery Pack Designed Specifically for iPhone Duo
Accessory maker BMX has released a custom-fit 5,000mAh power bank for the upcoming iPhone Duo, addressing fitment issues with standard accessories.

Key points
- The BMX Duo power bank is shaped to fit the folded footprint of the iPhone Duo.
- It supports 15W wireless charging and includes a built-in USB-C cable for 20W charging.
- The device uses semi-solid-state cells to reduce the risk of battery fires.
Accessory maker BMX has released the BMX Duo, a MagSafe battery pack designed specifically for Apple’s upcoming foldable iPhone. According to 9to5Mac, the device is available for order now ahead of the iPhone Duo’s launch on Friday. This release addresses a specific hardware compatibility gap for the new device.
The BMX Duo 5000mAh Power Bank costs $79.99 and is sold on Amazon. It is designed to snap onto the iPhone Duo securely. The accessory also maintains compatibility with the iPhone 12 through iPhone 18 series, ensuring users of older devices can still utilize the product.
Design and Compatibility Context
The iPhone Duo supports MagSafe technology, but its physical dimensions differ from standard iPhones. According to 9to5Mac, the device is shorter than a standard iPhone model. This size difference means many existing MagSafe accessories will not fit properly or may hang awkwardly off the bottom of the device.
BMX addressed this by shaping a custom-size 5,000mAh cell to match the iPhone Duo’s folded footprint. The power bank sits flush on the cover panel instead of extending past the edges. This design ensures a secure magnetic attachment without overhang.
Technical Specifications and Safety
The BMX Duo offers multiple charging options for users. It attaches via MagSafe to provide wireless charging at up to 15 watts. Additionally, the device features a built-in USB-C cable that can charge devices at speeds of up to 20 watts. This dual approach allows for flexible power delivery depending on the user's needs.
The power bank includes a rotating ring that turns a full 360 degrees. The back of the device features a full-color display. This screen shows the exact battery percentage and live charging wattage, providing users with real-time status information.
BMX states that the device uses semi-solid-state cells. According to the company, these cells use significantly less liquid electrolyte than conventional lithium-ion cells. BMX claims this design helps reduce the risk of battery fires, offering a potential safety advantage over standard battery technologies.
What should you do?
Users planning to purchase the iPhone Duo should verify accessory compatibility before buying third-party MagSafe products. Existing iPhone users may consider the BMX Duo for its universal fitment with models from iPhone 12 onward. Monitor official Apple announcements for further details on the iPhone Duo’s launch and accessory ecosystem.
What to do and how to stay safe: BMX
- Verify that your current MagSafe accessories are compatible with the new iPhone Duo dimensions before purchasing additional gear.
- Check the weight and balance of third-party battery packs to ensure they do not obstruct the device’s folding mechanism.
- Monitor official vendor channels for firmware updates that may improve charging efficiency or safety features for the power bank.
- Review the warranty terms of the power bank to understand coverage for battery degradation or safety incidents.
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Frequently asked questions
Will the BMX Duo work with older iPhone models?
Yes, according to 9to5Mac, the BMX Duo snaps onto the iPhone 12 through iPhone 18 series just as securely as it does on the iPhone Duo.
How much does the BMX Duo cost?
The BMX Duo 5000mAh Power Bank is available to order for $79.99 on Amazon, according to the report by 9to5Mac.
What safety features does the BMX Duo include?
BMX says the device uses semi-solid-state cells that use significantly less liquid electrolyte than conventional lithium-ion cells to help reduce the risk of battery fires.


