SMRT Flex - iPhone Battery Charging Case for iPhone 6, 6s, 7, 8 Plus

58 In stock

Charging Cases


The SMRT Flex: Designed Specifically for PLUS iPhones ONLY 

Fits iPhone 6 Plus, 6s Plus, 7 Plus, and 8 Plus

Our Slim Handheld Design Adds Only
3.7 oz. of weight and 0.72 in. of thickness.

Works with Lightning Headphones

SMRT Flex - iPhone battery charging case for 6, 6s, 7, 8 Plus phones
SMRT Flex - Battery Charging Case for iPhone Plus phones 6, 7, 8

Powerful Battery

  • The SMRT Flex iPhone PLUS battery case provides a powerful battery capacity of 3700 mAh battery to recharge your iPhone PLUS more than one full charge. Beautifully crafted and over-engineered to deliver to quality you expect from TechSMRT.
  • After spending upwards of $700 you’re going to need a case that will protect your phone from the inevitable drops and spills. And with only ~2700 mAh of battery capacity built-in to your new iPhone Plus, your going to need an extra battery to get you through the long days of staring at that gorgeous plus screen. 

Shock Absorbing Frame

The shock-absorbing frame protects your iPhone PLUS from impacts even at the corners where your screen is most vulnerable.

Lightweight, Comfortable Design

iPhones straight from the box are notoriously slippery. The design of our new PLUS case adds a bit of helpful size and weight. Thin and light sounds great, but IRL, it’s actually easier (and safer) to hold on to a phone with a little bit more heft.

Easy Slide Tech

Our innovative “Easy Slide” technology makes it easy and save to remove and reinstall your case. The phone must slide straight up and down which prevents damage to the lightning port on the phone and inside the case.

Advanced SYNC & Hassle-Free Charging

Sync data to your Macbook, PC or laptop and charge your phone at same time without removing the case. Our advanced chipset charges quickly and safely, and turns itself off quietly when your phone is fully charged.

Built-in Magnet

With the built-in magnet, this case works flawlessly with magnetic car mounts (Car Mount Not Included).

SMRT Flex - iPhone battery charging case for Plus phones

Available in 

SMRT Flex - battery charging case for iphone plus


With 4 Level LED power level indicator, this battery case will let you know exactly the remaining battery life (0-25%-50%-75%-100%)

SMRT Flex - iPhone battery charging case for iphone plus models