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Black rectangular power bank with rounded edges and matte finish

Eissix W21 10000mAh 22.5W MagSafe Power Bank Black

SKU CH-TAFX-CMKNF

A 10000mAh MagSafe power bank with 22.5W USB-C output and N52 magnets for iPhone 12 to 17 series

  • ColorBlack
  • Volt3.85 volts
  • Dimension0.67 in x 2.76 in x 4.2 in
  • Weight6.88 ounces
  • Strong magnetic hold with 18 N52 magnets delivering 3500GS strength
  • Compact design at 1.7 × 7 × 10.7 cm and 195g for easy portability
  • 5W wired output via USB-C for fast device charging
  • MagSafe compatible with iPhone 12 through 17 series and Apple Watch
  • NTC temperature protection keeps surface below 40°C during use

MagSafe Power Bank for iPhone 12 through 17

The Eissix W21 is a 10000mAh portable charger built for iPhone 12, 13, 14, 15, 16 and 17 series devices. It adds wireless magnetic charging plus a 22.5W USB-C output for wired top-ups. Travellers and commuters who want cable-free power without carrying a bulky brick will find the capacity suits a full day of mixed use. It also supports Apple Watch Ultra 1, 2 and 3 via magnetic attachment.

N52 Magnetic Array and Pocket-Sized Build

Eighteen N52-grade magnets deliver 3500GS holding force so the bank stays locked to the phone during calls, scrolling or selfies. The slim profile at 1.7 × 7 × 10.7 cm and 195 g weight lets it slide into a pocket or small bag without covering the rear camera. An NTC temperature guard keeps the charging surface below 104°F while the 5A-rated lithium-ion cells handle the 22.5W output. MagSafe cases work, but removing the case improves efficiency and reduces heat.

USB-C Cable Included for Wired and Recharge Use

A USB-C to USB-C cable ships in the box, letting you recharge the power bank at up to 22.5W or connect non-magnetic devices for wired charging. No wall adapter is bundled, so you will need a compatible USB-C charger to refill the 10000mAh cell. The magnetic alignment works only with iPhone and Apple Watch; Android phones and other Qi devices cannot use the magnetic feature.

Highlights

  • Strong magnetic hold with 18 N52 magnets delivering 3500GS strength
  • Compact design at 1.7 × 7 × 10.7 cm and 195g for easy portability
  • 5W wired output via USB-C for fast device charging
  • MagSafe compatible with iPhone 12 through 17 series and Apple Watch
  • NTC temperature protection keeps surface below 40°C during use

Specifications

BrandEissix
ModelW21
ColorBlack
Volt3.85 volts
Dimension0.67 in x 2.76 in x 4.2 in
Weight6.88 ounces

Questions about this item

What wireless charging standard does the Eissix W21 use, and what output does it cap at?

It uses MagSafe-compatible magnetic wireless charging for iPhone 12 through 17 series and Apple Watch, with N52 magnets rated at 3500 GS for a secure hold.

What are the exact dimensions and weight so I can check if it fits my pocket or bag?

The unit measures 1.7 x 7 x 10.7 cm (0.67 x 2.76 x 4.21 in) and weighs 195 g (6.9 oz), roughly the weight of an iPhone 16 Pro Max.

How do I attach it for the first charge, and what common mistake should I avoid?

Snap it onto a MagSafe-compatible iPhone 12-17 or Apple Watch; remove non-magnetic cases first, as only magnetic cases work and other cases weaken the hold and increase heat.

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