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Black rectangular power bank with rounded corners, slim card-style profile, magnetic wireless surface

MIRO

MIRO B4 5000mAh 15W Magnetic Wireless Power Bank Black

SKU CH-7GHZ-RSHAB

A 5000 mAh magnetic wireless power bank delivering 15 W fast charge in a slim 110 g card-style design

  • TypePower Bank
  • ColorBlack
  • Compatible Phone ManufacturerApple
  • Compatible Phone ModeliPhone 14 Pro Max
  • Capacity5000 mAh
  • ChemicalLithium Polymer
  • 5000mAh capacity gives a full phone charge
  • 15W wireless output charges at speed
  • Strong magnetic module aligns automatically with iPhone 14 Pro Max
  • Card-style body measures 4.17×2.6×.472 inches
  • Weighs 110g for pocket-friendly portability

Magnetic Power Bank for iPhone

The MIRO B4 is a 5000mAh magnetic wireless power bank built for Apple iPhone 14 Pro Max users. Its card-style body measures 4.17×2.6×0.472 inches and weighs 110g. A lithium-polymer cell stores 19.25Wh and delivers up to 15W of wireless power at 5V 3A. The integrated magnet array locks onto the back of the phone for cable-free charging.

Who this suits and who it does not

This unit suits iPhone owners who want a slim, snap-on battery for daily top-ups while streaming or taking calls. Buyers who need more stored energy for multiple full charges or who use Android handsets without magnetic alignment should look at larger-capacity or non-magnetic alternatives.

The deciding specification

The single figure that decides fit is the 15W wireless output combined with the magnetic module designed for Apple MagSafe alignment. If your charging routine relies on that exact power level and magnetic attachment, the B4 matches the requirement; otherwise a different power profile will serve you better.

Highlights

  • 5000mAh capacity gives a full phone charge
  • 15W wireless output charges at speed
  • Strong magnetic module aligns automatically with iPhone 14 Pro Max
  • Card-style body measures 4.17×2.6×.472 inches
  • Weighs 110g for pocket-friendly portability

Specifications

BrandMIRO
SeriesB4
ModelB4
TypePower Bank
ColorBlack
Part NumberB4
Compatible Phone ManufacturerApple
Compatible Phone ModeliPhone 14 Pro Max
Capacity5000 mAh
ChemicalLithium Polymer
Volt5 Volt
Amp3A
Dimension4.17×2.6x0.472''
Weight110g

Questions about this item

Does the MIRO B4 5000mAh power bank get hot when charging an iPhone 14 Pro Max at 15W wireless all day?

The 5000mAh lithium-polymer cell delivers 15W wireless output; the slim 0.472-inch profile leaves little thermal mass, so extended high-power sessions will warm the casing.

What cable and wall charger do I need to recharge the MIRO B4 itself?

A USB-C cable and a 5V 3A USB-C power adapter are required to refill the 19.25Wh internal battery.

Will the magnetic alignment hold an iPhone 14 Pro Max securely in a vertical car mount while the B4 is attached?

The built-in magnetic module is designed for Apple MagSafe-compatible models such as the iPhone 14 Pro Max, providing a firm hold in portrait or landscape orientation.

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