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Thin Battery Case

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Adding Protection and Extending Battery Life in a Thin Case

We can’t live without our phones. That means protection is as important to most users as always having a powered phone when they need it. But can all this be offered in a compact way? With 3Line Power Case it can.

XPNDBLS’ Approach

Our tech experts designed the 3Line Power Case as an extremely lightweight yet protective case for the iPhone 6/6S. Our designers developed the case to offer a built-in, razor- thin battery to keep your iPhone ready when you need it. The 3Line case is the thinnest iPhone battery case available yet still offers an elegant, ergonomic design. XPNDBLS' team used a mix of hard and soft polymer, ABS/PC and TPU, to give ultimate protection and premium finish. The mixed plastic materials also allow for a comfort grip while achieving well rounded protection. XPNDBLS manufactured the built-in battery to disappear smoothly into the inner structure of the case.


Color: Black

Materials: ABS, PC, TPU

Measurements: 5.9"L x 2.8"W x 0.49"H

  • Power Source: 5V/1A
  • Battery Type: Lithium Ion 1550 mAh
  • Cord/Adapter: USB-A to USB-C
  • Compatibility: iPhone 6/6s, Universal USB
  • Offers Up To 80% Of A Full iPhone Charge ( iPhone 6/6s)

Success with XPNDBLS

XPNDBLS designed 3Line to be the thinnest battery case that i can be. The 3Line case is still to this day, the thinnest battery case to be certified by Apple. Contact us, we can help.

Project Outcome