iPhone 4S has a pretty decent battery inside. But it won’t last you forever. Having a battery extender for your iPhone can help you get more out of your device and have power for emergency situations. These 4 battery cases for iPhone 4S not only power up your iPhone, they protect it too:
Boost Case Plus – Protective Case: it comes with a 2200 mAh high capacity rechargeable battery. Let’s you sync and charge at the same time.
Scosche IP4BAT Backup Battery Case: a hybrid battery case for iPhone 4. It has a rechargeable lithium-ion battery with 1800 mAh capacity. It can act as a stand for your device too.
uNu Power DX External Protective Battery: a cool looking case with a built-in 1700mAh battery. Works for iPhone 4/s.
iPhone 4 / 4S Fuel Lite: does not have the strongest battery inside but it can still work as a decent emergency accessory for your phone. This is an impact resistant case with a 1020 mAh battery.
These battery cases are great accessories to have for emergency situations. They look pretty decent and protect your device too.
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