The 11 Best S21 Battery Cases (2022 reviews)

The Aftryougo S21 Battery Case's material feels more premium than its price would suggest. The aftryougo s21 battery case is great for good quality and has a new design. This battery case does not include a charging cable. When your battery case needs charge, please use your original charging cable. The case provides complete shock absorption, which can protect the phone from drops and bumps.

Most importantly, the aftryougo s21 battery case is perfect for Christmas day, happy New Year's gift, Thanksgiving day, and birthday gifts for family members and friends.

Almost all buyers found that the case is perfectly, phone fits/locks in correctly. In addition, they strongly agree that the case does act as a phone stand (saw some confusion in other posts) - need to rotate and lock the clip in the full open position. Also, a few strongly agree that the case is made by otterbox but the size, color and workings appear to be identical.

Top Customer Quotes:

This is compatible with Samsung galaxy s21 battery case x 1.
The galaxy s21 extended case is great for going shopping and travelling.
The Manufacturer says: we will solve your problem in 24 hours.
Raised bezels help you to protect the screen to some extent.

Best For Playing Games: Newdery S21 Battery Case

Buy on Amazon

Not everyone likes to purchase a case for their daily usage, but the new s21 battery case would be an anomoly. The new s21 battery case is a leader in the manufacturing of battery charger cases. Please still add a protectors to your phone to prevent it from facing drops. The galaxy s21 extended case is great for going shopping and traveling.

Lastly, the new s21 battery case is very useful and it provides great protection.

Almost all customers agree that the case will constantly connect and disconnect. Furthermore, a few also found that the case is a perfect case for the all day streamer. Moreover, a few say that this case is pretty nice. It fits well even with a glass screen protector on the front and rear of the phone.

Top Customer Quotes:

This makes for an excellent battery, is defective and it is affordable.
This is designed for a great price, has charging capability and it is very good.
Raised bezels help you to protect the screen to some extent.
This is great for bluetooth headphones and it comes with great customer service.

Best Choice For Travel: Jbubn S21 Battery Case

Buy on Amazon

Compared with other cases in this category, the Jbubn S21 Battery Case has a convenient design. The jbubn s21 battery case is not designed for screen protection. No cables are included, please use your original charging cable to charge it. Moreover, this is not supported by the case.

The case is good for important note, allows for talk time and it is easier. In addition, the case is perfect for internet surfing and it has double your battery life. Lastly, the jbubn s21 battery case is great for battery type, is soft and it has a bluetooth headset.

One customer says - "You can color, play games, and do puzzles. ". Most customers agree that the case is a great activity book. Overall, for most customers, the case was just what they wanted.

Why We Like This:

This means enjoying more talk time, It comes with a satisfaction guarantee and has a great design.
Supply enough power to fully and safely charge your galaxy s21.
Step 1.please fully charge the battery case before using the product.
Start your risk-free purchase by clicking the add to cart button.

Best For Internet Surfing Time: Slabao S21 Battery Case

Buy on Amazon

Slabao makes beautiful and great cases with classic and smartly chosen materials. The Slabao S21 Battery Case allows for great support, It is great for internet surfing and has a great design. Stream your favorite shows, facetime your besties, or take charming selfies, all hands free. Note: If the case 's battery is drained, kindly charge the battery case separately for some minutes, then insert the phone to activate the priority charging function.

The case is not waterproof and it is not designed to provide screen protection. Above all, the slabao s21 battery case is good for important note, it has a built-in short-circuit and has a protection design.

"So if you are looking for a charger case, this is the one to buy. " - says, one customer. In short, most customers call the case suits best, and no one questions it.

Customers say that getting a s21 battery case, along with case is useful.

Why We Like This:

Built-in foldable kickstand to free your hands while watching videos or face-time.
Tilt angles larger than 15 degrees may cause damage to the product.
The Manufacturer says: our battery case doesn't protect the screen.
This is perfect for traveling, business trips or other outdoor activities.

Best For High Capacity Power: Hqxhb S21 Battery Case

Buy on Amazon

The Hqxhb S21 Battery Case should be able to handle its purpose and duties with ease. The hqxhb s21 battery case is perfect for traveling, camping, business trips or other outdoor occasions. 4 led lights to check power level of 25%-50%-75%-100%.you could switch on/off the battery case with the power switch button on the bottom. This galaxy s21 charging case is not bulky and easy to hold in hand.

The case works great, it allows for a perfect fit and has a convenient design. Most importantly, the hqxhb s21 battery case allows for good charging, It is very convenient and has an upgraded design.

Most buyers agree that the case works well, stays charged for a good while. Further, they strongly agree that the case fits right and looks good. In addition, a few also found that the case fits well and has a protective lip around the front face of the phone. Overall, many buyers have used the hqxhb s21 batterycase for more than a few months without any complaints, and it shows no sign of giving up.

Why We Like This:

It is convenient, it is very good and has a great design.
This has a charging life, it works perfectly and has a new design.
New and hot releases.

Best For Fast Charge: Fey S21 Battery Case

Buy on Amazon

Fey makes beautiful and great case with classic and smartly chosen materials. The Fey S21 Battery Case is made of durable material, provides full back cover protection, against scratches or daily damage. Convenient for daily use and provides battery power for you during emergencies. The small 1 x battery charger case for Samsung galaxy s21 5 g.

Most importantly, the fey s21battery case has input current, is sleek, it has a built-in short-circuit and has a charging design.

Overall, buyers found this to be one of the best cases for daily purposes.

Customers discovered that getting a s21 battery case, along with case is useful.

Why We Like This:

It ensures your phone has enough power during traveling or working outside.
This is not compatible with s21+ or s21 ultra.
Charge your phone without charging the cable, more convenient outside.

Best With Extra Battery: Bahond S21 Battery Case

Buy on Amazon

Next on the list, we've got yet another case that manages to win our hearts. It's the Bahond S21 Battery Case and it's widely considered as the case that has the most suitable features. The bahond s21 battery case is charged once it’s installed into the battery case. You need to remove the battery case if you want to sync the phone to a computer. The battery case wo n’t automatically charge the phone when the phone battery runs low.

The case is not compatible with galaxy s21+ or galaxy s21 ultra. Lastly, the bahond s21 battery case has reinforced corners, it fits well and has a charging design.

Most buyers agree that the case is easy to use while you're at the movie theater or if you're at the airport.

Why We Like This:

This is ideal for long distance journeys and business trips.
This is perfect for traveling and outdoor activities.
This is made of high quality material, unique and comfortable tactile impression.
Fit your hand, match your mind.

Best For Full Protection: Runsy S21 Battery Case

Buy on Amazon

Runsy line of cases come in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Runsy S21 Battery Case is made of high quality material, unique and comfortable tactile impression. You need to remove the battery case if you want to sync the phone to a computer. The battery case wo n’t automatically charge the phone when the phone battery runs low.

Finally, the runsy s21 battery case is ideal for long distance journeys and business trip.

In short, many buyers have used the runsy s21 batterycase for more than a few months without any issues, and it shows no sign of giving up.

Why We Like This:

This is not compatible with galaxy s21+ or galaxy s21 ultra.
This works really well, it allows for talk time and has a side protection design.
Fit your hand, match your mind.
This is charged once it’s installed in the battery case.

Best For Long Distance Journey: Loytal S21 Battery Case

Buy on Amazon

The Loytal S21 Battery Case's superior materials make sure that it ages well with use. The loytal s21 battery case has reinforced corners, it charges fast and has a protection design. Fit your hand, match your mind. The battery case wo n’t automatically charge the phone when the phone battery runs low.

The case is made of high quality material, unique and comfortable tactile impression. Most importantly, the loytal s21battery case has a built-in 4800mah lithium-ion battery, it has a built-in short-circuit and has a great design.

Therefore, most buyers agree that the case suits them best, and no one questions it.

Why We Like This:

This is designed with overcharge protection, it allows for talk time and has an integrated design.
Charge the phone and battery case simultaneously while plugged in.
This is perfect for traveling and outdoor activities.
This is charged once it’s installed in the battery case.

Best For Surface Protection: Fraternize S21 Battery Case

Buy on Amazon

We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate case. The Fraternize S21 Battery Case is exactly that - it's a simple case that hits all the right notes. The fraternize s21 battery case has a built-in smart chip, It is great for soft rubber and has an integrated design. Certificated by ce, fc and rohs, which provides a safe charging environment for your phone. The galaxy s21 battery case is made of tpu and pu.

The case is great for full protection and has a comfortable design. Moreover, it is easy to install, it has support qi wireless charger and has a reliable design. Finally, the fraternize s21 battery case has input current and has a new design.

Why We Like This:

Raise-edge helps you protect the screen to some extent.
Protects your galaxy s21 every day.
The built-in smart chip protects your iphone from overheating, short-circuit and overcharging.
6000mah ul-tested battery that provides you a reliable charge every time.

Best For Dual Layer Protection: Punkcase S21 Battery Case

Buy on Amazon

We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate case. The Punkcase S21 Battery Case is exactly that - it's a simple case that hits all the right notes. And, the punkcase s21 battery case has been exclusively designed for the samsung galaxy s21. 5g (6.2") only | screen protector not included. Punkcase 4800mah galaxy s21 battery backup case please note. Moreover, it is soft, it is powerful and has a magnetic design. Above all, the punkcase s21 battery case is available in 3 different colors: blue, red and black.

Why We Like This:

This has led indicator lights, it extends your battery life and has a perfect design.
One of the newcomers and featured product.