$49.99 for a uNu Exera iPhone 4/4S Battery Case and Charger ($99.95 List Price). Free Shipping and Returns.

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$99.95 50% $49.96
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In a Nutshell

A battery case for iPhone 4/4S nearly doubles charge and provides 360º protection; the charging dock can power four batteries at once

The Fine Print

Limit 3 per person, may buy 2 more as gifts. Free returns. Free shipping. Does not ship to AK/HI/Canada/Puerto Rico. Most orders are delivered within 2 1/2 weeks from the purchase date. Does not ship to PO boxes. See return policy. Must pay applicable tax and provide name and shipping address at checkout, which will be shared to facilitate shipping. 1 year warranty from uNu. Goods sold by Groupon Goods.

uNu Exera iPhone 4/4S Battery Case and Charger: $49.99 for a uNu Exera iPhone 4/4S Battery Case and Charger ($99.95 List Price). Free Shipping and Returns.

uNu Exera System Battery Case and Duo Charging Dock

Red battery statuses are shepherded into greener pastures by a lithium-polymer battery that’s built into the back of each hard-shell case. The two-piece case adds up to twice as much battery life to an iPhone 4/4S, resulting in an additional 6 hours of talk time, 30 hours of music playback, and 240 hours of standby time. A panel slides over the battery slot to keep the case uniform so phones can slide into front pockets or saint bernard casks. The clever case still allows for full functionality, and its rugged bumpers protect devices from nicks and scratches. Included in the system are two additional battery modules and a sleek charging hub capable of simultaneously powering three Exera battery modules and an integrated iPhone battery.

Exera Modular iPhone Battery Case, Slim Back Cover, and Bumper
  • Clever case can nearly double usage time for iPhone 4 or 4S
  • Emblazoned with Apple’s Made for iPhone certification
  • Swap out battery pack back for slim back cover when phone is charged
  • Front bumper protects from nicks, scratches, and scissor hands
  • Condition: new
  • One-year warranty from uNu
  • Click here for product specifications. <p>
Exera Duo Charging Dock
  • Hub charges up to four batteries at once (integrated iPhone battery and three Exera batteries)
  • Uses USB port and two Exera battery ports
  • Charging status indicator light
  • Sleek, space-saving design <p>
1700mAh Battery Modules
  • Three battery modules prevent utter juice depletion
  • Each battery nearly doubles potential battery life <p>

In the box: one Exera Modular iPhone 4/4S battery case, one slim back cover, one bumper, one Exera Duo charging dock, three 1700mAh battery modules, one microUSB charging cable, one Crystal Clear screen protector


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