4 battery cases for Samsung Galaxy S9 and S9+

The awesome new Galaxy S9 and Galaxy S9+ phones are here and Summer is also right around the corner. We'll sure be spending a lot of time outdoors and capturing our great adventures with the awesome new cameras on those flagships, right?

So, it's a good idea to get a case and protect that jewel of a phone from any accidental bumps. It's an even better idea to have a portable battery on hand, in case you run out of juice. Well, how about combining both items in a single battery case?

There are some cool battery cases already available for the Galaxy S9 and S9+ and we will be taking a quick look at them right here!

Zloskw battery case for Galaxy S9 and Galaxy S9+

Your generic case when you are looking for something on a budget. $20 gets you a 7,000 mAh battery, which should be able to give you about 2 extra charges on a Galaxy S9+. There's not much protection there, but on a positive note — having access to your premium phone's exposed frame always feels better to the touch than any case out there. You can transfer data to your phone straight from the case's USB Type-C port, so you needn't worry about taking it off just for that.

Zerolemon battery case for Galaxy S9 and Galaxy S9+

Zerolemon is a brand that has been in the portable battery and battery case business for a while. The $40 price tag here gets you a case that is a bit more protective, wrapping around the phone's frame fully and with a lip to protect the display on all sides. A 5,200 mAh capacity ensures that you will be able to charge a Galaxy S9+ fully once and have a bit more left in the tank. You can transfer data to your phone straight from the case's USB Type-C port, so you needn't worry about taking it off just for that.

Alpatronix battery case for Galaxy S9 and Galaxy S9+

Alpatronix is another name that has been around on the smartphone accessories market for a while. This battery case here supports wireless charging — setting down your phone on a Qi charger will juice up both the phone and the case. Tbut the downside is that we "only" get 4,000 mAh / 4,600 mAh juiceboxes — nothing to smirk at, but still comparably smaller than the above offers. Of course, you can also just use a USB Type-C cable and yes, this case also supports data transfers directly through it.

i-Blades SmartCase for the Galaxy S9 and Galaxy S9+

i-Blades has what it calls SmartCase. It's a modular case with magnetic connectors on its back. At its core, it's a protective case with an embedded air quality monitor inside it. Yeah, that may sound like a redundant feature, but it kind of makes sense in the context of the S Health suite and its UV sensor, heartbeat sensor, blood pressure meter, et cetera.

That i-Blades shell has three magnetic connectors on its back. You slap the external battery (called Smartblade) on them and voila – you get power. But that's not all — the Smartblade battery module also carries extra storage (16 GB, 32 GB, or 64 GB), which syncs with your phone when connected. Additionally it has a micro SD card slot of its own. Again, a feature that may seem a bit superfluous, considering the Galaxy S9 already has 64 GB of storage and its own SD card slot. But hey, storage is storage. The Smartblade only holds 1,800 mAh, but you can stack up to 4 of them together via their magnetic connections.

i-Blade also talks about developing different modules in the future, so the SmartCase might evolve into being something of a Swiss army knife of cases. We'll have to wait and see if that potential is fulfilled.