BMX releases a custom-fit 5,000mAh power bank for the upcoming iPhone Duo, priced at $79.99 and available for pre-order now.
Key points
- BMX Duo power bank fits the shorter iPhone Duo footprint without hanging off edges.
- The device offers 15W wireless MagSafe charging and 20W wired USB-C charging speeds.
- Semi-solid-state cells are used to reduce liquid electrolyte and potential fire risks.
Accessory maker BMX has launched a power bank specifically engineered for Apple’s upcoming foldable iPhone Duo. The device addresses fitment issues common with standard MagSafe accessories on the shorter form factor.
What happened
BMX is selling the BMX Duo, a 5,000mAh power bank designed for the iPhone Duo, which launches on Friday according to 9to5Mac. The product is available for order now on Amazon for $79.99. It provides 15W wireless charging via MagSafe and includes a built-in USB-C cable for 20W wired charging speeds.
The BMX Duo features a custom-shaped cell that matches the iPhone Duo’s folded size. This design allows the battery to sit flush on the cover panel instead of protruding past the device’s edges. It also attaches securely to iPhone models from the 12 through the 18 series.
Additional features include a rotating 360-degree ring and a full-color display showing battery percentage and live wattage. BMX states the unit uses semi-solid-state cells with less liquid electrolyte than conventional lithium-ion batteries to lower fire risks. More accessories are expected soon.
Why it matters
MagSafe accessories rely on precise magnetic alignment and physical dimensions to function correctly with specific iPhone models. When a new device has a unique form factor, such as a foldable or shorter body, standard third-party attachments may not align properly or may obstruct ports.
Consumers should verify that accessories are explicitly designed for their specific device model before purchasing. Generic compatibility claims often overlook physical fitment issues that can prevent secure attachment or cause damage. Checking manufacturer specifications ensures the accessory matches the device’s physical and charging requirements.
The fix
- Check if your current MagSafe accessories fit the new device’s dimensions.
- Verify charging speeds supported by the new power bank match your needs.
- Confirm the accessory is compatible with your specific iPhone model series.
- Look for safety certifications or battery technology details from the vendor.
Why it matters
When new hardware launches, third-party accessory makers often race to release compatible products before the official debut. This creates a market of early adapters who may face compatibility issues if the final product differs slightly from prototypes.
Users should approach early accessory releases with caution, ensuring they understand return policies and compatibility guarantees. It is important to distinguish between marketing claims and verified technical specifications. Waiting for independent reviews can help confirm that the accessory functions as advertised with the final device.
What to do and how to stay safe: BMX
- Verify the power bank’s compatibility with your specific iPhone model before buying.
- Check the return policy in case the accessory does not fit or function as expected.
- Monitor for independent reviews after the iPhone Duo launches to confirm performance.
- Ensure the charging speeds meet your daily usage requirements before purchasing.
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General security guidance from the Crypt Weekly newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
When can I buy the BMX Duo power bank?
It is available to order now on Amazon for $79.99, ahead of the iPhone Duo launch on Friday.
Does the BMX Duo work with other iPhones?
Yes, it snaps onto iPhone 12 through 18 series devices securely, in addition to the iPhone Duo.
What safety features does the BMX Duo have?
It uses semi-solid-state cells with less liquid electrolyte to help reduce the risk of battery fires.



