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5 Best Galaxy S9 Battery Cases

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These are the best battery cases for the Galaxy S9 and Galaxy S9+. Cases that will give you a boost of extra battery life and keep your phone safe at the same time. With a big 5.8-inch screen and curved glass edges, a case is highly recommended. Here’s why you’ll want a battery case and some of the best ones available.

Buyers have a few different styles and battery pack sizes to choose from when it comes to cases. Some even offer wireless charging, so you won’t lose any Galaxy S9 features. Whether you just want your phone to last longer or noticed a dip in battery life after the Android Pie update, we have you covered.

We’ve found some priced around $30 although you’ll need to spend a little more to get a battery case from a reputable brand.

Before we begin, it’s worth mentioning the size of the Galaxy S9 and S9+ internal battery. That way you can compare battery case sizes and extend battery life as much as possible. The Galaxy S9 has a 3,000 mAh battery while the bigger Galaxy S9+ packs a 3,500 mAh cell. The batteries are not removable either. As a result, the best thing for users is a portable battery charger or a battery case.

The cases in our roundup below are perfect for business users, road warriors, or someone going on vacation. Each one will double your battery life, or more, and make the Galaxy S9 last for 2-3 days on a single charge. Or, give you enough juice to record tons of video on a trip.

Basically, these are durable rugged cases with a battery built-in. Some even have a detachable battery so you can snap it on when you need it, and keep your phone thin and easy to carry when you don’t.

Additionally, now that the Galaxy S9 is almost a year old some users may notice a dip in battery performance. That’s naturally, as they start to degrade over time. Especially if you let it get to 0% often, as that’s bad. Eventually, it won’t last as long as it did when you first bought it. When that happens, you’ll want a battery case like the ones we recommend below. Try one today.

Zero Lemon 5,200 mAh S9+ Case ($40)

Zero Lemon 5,200 mAh S9+ Case ($40)

The first battery case on our list comes from Zero Lemon. For years they've offered excellent battery cases, and this year they have two great options for the Galaxy S9 and S9+. 

ZeroLemon's battery case adds 5,200 mAh to the already decent 3,500 mAh battery in the Galaxy S9+. Giving you a total of 8,700 mAh of juice. That's more than enough to last 2-3 days, if not longer. Or, for $29 the case adds 4,700 mAh to the regular Galaxy S9. 

The company uses a soft-touch matte finish to the TPU and polycarbonate shell, and there's an LED light so you know when the case is charging your phone. As an added benefit, it supports USB pass-thru technology. Meaning you don't have to take the case off to add or transfer files on your Galaxy S9 over USB. It's only $29 or $39. 

Buy it from Zero Lemon for $39.99

Or get the Galaxy S9 battery case on Amazon for $29

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1 Comment

1 Comment

  1. Anuj

    02/08/2019 at 5:04 pm

    every smartphone company should launch this type of case

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