Best Waterproof Phone Battery Cases of 2026

Name: MIGAFEI iPhone 8/7/6s/6/SE 2020 battery case
Brand: MIGAFEI

Harvey Wall

Last Updated: 5 Feb 2026

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For those who love the great outdoors or have a job that requires them to be in wet environments, waterproof phone battery cases are a game changer. These cases not only protect your phone from water damage, but also provide extra battery life for your device. With a variety of options available, from slim and lightweight to heavy duty and rugged, there is a waterproof phone battery case to suit every need. Whether you're hiking in the rain, working on a construction site, or simply prone to dropping your phone in the sink, these cases provide peace of mind and practicality.

At a Glance: Our Top Picks

#TOP 1

MIGAFEI iPhone 8/7/6s/6/SE 2020 battery case

9.8

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MIGAFEI iPhone 8/7/6s/6/SE 2020 battery case

#TOP1

9.8

Read Review

#TOP 2

MIGAFEI Battery Case for iPhone 12/12Pro

9.7

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MIGAFEI Battery Case for iPhone 12/12Pro

#TOP2

9.7

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#TOP 3

Battery Case for iPhone 16 Plus

9.5

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Battery Case for iPhone 16 Plus

#TOP3

9.5

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Top 4 Waterproof Phone Battery Cases

#TOP 1

MIGAFEI iPhone 8/7/6s/6/SE 2020 battery case

MIGAFEI

Akku-Hülle

MIGAFEI iPhone 8/7/6s/6/SE 2020 battery case, 6800mAh ultra-thin protective charging case, portable rechargeable expandable battery charger

9.8

FTB Score

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Features

[High Quality Last Longer] The 6800mAh Built-In Lithium Polymer Battery Can Effectively Provide 150% Additional Battery Life To Your iPhone, Keeping Your iPhone Charged The Entire Day.

[Compatible Model] The Battery Case Is Specially Designed For iPhone 8/7/6s/6 (4.7 Inch), Not For iPhone 6 Plus/7 Plus/8 Plus Or Other Models. Car Charger, High Voltage Or Quick Charge Adapters Are Not Supported. Not Support Wireless Charging.

[Easy To Install And Use] Please Bend The Soft Top Part Of The Battery Case, Then Push Your iPhone In Or Out. Also, Press The Back Power Button For 3 Seconds To Start/stop Charging.

[After-Sales Service] If For Any Reasons, You Are Not Satisfied With Your Purchase, Please Contact Our Customer Service And We Will Be Happy To Assist You.

[Advanced Sync & Convenient LED Indicator] The Sync-Through Technology That You Can Simultaneously Charge Your Phone And The iPhone 8/7/6s/6 Battery Case Together. Equipped 4 LED Battery Level Indicators, Show You Exactly Remaining Power(0-25%-50%-75%-100%).

MIGAFEI Battery Case for iPhone 12/12Pro

MIGAFEI

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Black12/12Pro Case

MIGAFEI Battery Case for iPhone 12/12Pro, 7000mAh Portable Backup Protective Charging Case Rechargeable Extended Battery Charger Cases for iPhone 12/12 Pro Black

9.7

FTB Score

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Features

[Extra 150% Battery Life] ：The Charger Case For Iphone 12/12Pro Perfectly Solve The Problem Of Phone's Low Battery Or Exhausted Power, And It Will Be Your iPhone's Best Companion. There Inside Sets Built-In High-Quality 7000 mAh Lithium Polymer Battery To Extend Your iPhone's 150% Service Life. Keep You Away From Low Battery And Keep Your Phone Full Of Energy All Day Long.

[Compatible Model] ：The Battery Case Is Specially Designed For iPhone 12 & 12 Pro(6.1 Inch),not Compatible With iPhone 12 Mini, iPhone 12 Pro Max Or Any Other iPhone Devices. Car Charger, High Voltage Or Quick Charge Adapters Are Not Supported. [Warm Tips: Please Fully Charge It Before The First Use]

[High-Quality After-Sales Service] : We Always Strive To Offer The Best Customer Service, If You Are Not 100% Satisfied With The Battery Case, Please Feel Free To Contact Us. We Will Solve Your Problem Within 24 Hours,we Will Give You A Satisfactory Solution!

[Charging & Protecting 2 IN 1] ：Please Use Your Original Charger Cable And Adapter To The Charger Case, Battery Case And The Phone Will Be Charged Simultaneously. The iPhone 12/12Pro Charger Case Is Not Only A Detachable Backup Portable Charger, But Also A 360°protective Case For Cellphone From Scratches And Other Daily Wear And Tear.

[Advanced Sync Technology] : This iPhone 12/12Pro Charging Case And Your iPhone 12 Can Be Charged At Same Time When You Use Your Original Charging Cable. Featuring Sync-Through Technology That You Can Sync Your iPhone 12 To A Computer Without Taking Off The Battery Case, 4 LED Battery Level Indicator That Lets You Know Exactly How Much Power You Have (0--25%--50%--75%--100%).

Battery Case for iPhone 16 Plus

GIN FOXI

IP-1567A

Black

Battery Case for iPhone 16 Plus, Fast Charging Case Charger 8500mAh Ultra-Slim Lightweight 15W Battery Pack Rechargeable Anti-Fall TPU Juice Box for iPhone 16 Plus (6.7") (Black, iPhone 16 Plus)

9.5

FTB Score

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Features

[Sync-Data Support] The Battery Case For Iphone 16 Plus Support Data& Transmission Sync-Through Technology That Conveniently Sync Your Phone To Your Macbook,PC Or Laptop Without Taking The Charging Case Off. You Can Simultaneously Charge The Phone And Battery Charger Case, The Phone Will Be Charged First, Followed By The Battery Case Charger For Iphone 16 Plus.

[Slim & Light-Weight & Real 8500mAh Capacity] Equipt With Upgraded Battery Chip And Component Shell, The Battery Case For iPhone 16 Plus Is Slim And Light-Weight. And The 8500mAh Battery Power Of The Charging Case For Iphone 16 Plus Can Add 150% Extra Power For Your Phone. The Best Choice For Travel And Work.[NOTE] :This Battery Case ONLY FIT For iPhone 16 Plus（6.7"）. NOT Support Wireless Charging.

[What You Get] 1 * GIN FOXI 8500mAh Battery Case For iPhone 16 Plus(6.7"), 1* Tempered-Glass Screen Protector, 1* Charging Cable, 1* User Manual. The Battery Case Was Designed From Ohio By GIN FOXI Designer. We Offer 7/24h Online Service, Please Contact The Seller Firstly If You Have Any Problem.

[Charging & Plustection 2 In 1] This Charger Case For Iphone 16 Plus Come With Intelligent Integrated Circuit,which Can Protect Your Phone From Overcharging,overheating, Over-Current, Short-Circuit. It's Bumper And Hard Shell Back Design Offers Complete Protection For Your Phone From Scratches, Daily Wear And Tear. Raised Bezels And Screen Protector Offer Broadside And Surface Protection. It Combines A Power Bank And A Protective Case.

[Blutooth Earbus & 15W Fast Charging] The Charging Case For Iphone 16 Plus Support Bluetooth Function And Apple Pay Function. And This Is A 15W Fast Charging Case Charger, Which Will Only Need 30mins To Charge Your Phone From 0% To 50% Energy.save Your Time And Power Your Phone Anywhere And Anytime. Convinient For Travel And Long Time Using Phone.

BOPPS 15W 7000mAh Battery Case for iPhone

BOPPS

FM1361

BOPPS Battery Case for iPhone 13/13 Pro/14/14 Pro,Upgrated Slim 7000mAh Charging Portable Rechargeable Charger Case Cover for iPhone 13,13 pro,14 pro,14 Charging Cases 6.1inch-Red

9.4

FTB Score

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The BOPPS Battery Case offers an ultra-slim and lightweight design while providing a powerful 7000mAh capacity. You can enjoy extended talk time, music, and internet usage without worrying about battery life. With its upgraded 15W quick charging capability, it charges your iPhone from 0% to 55% in just about 30 minutes, perfect for busy days. Additionally, the case is crafted from advanced materials, ensuring durability and longevity through more than 1000 charging cycles, making it a reliable companion for your device.

What We Like

Ultra-slim and lightweight design

Fast 15W charging capability

Durable with 1000+ charging cycles

Comprehensive safety protections

Editor's Notes

During our waterproof phone battery cases research, we found 41 waterproof phone battery cases products and shortlisted 4 quality products. We collected and analyzed 2,915 customer reviews through our big data system to write the waterproof phone battery cases list. We found that most customers choose waterproof phone battery cases with an average price of £20.00.

The waterproof phone battery cases are available for purchase. We have researched hundreds of brands and picked the top brands of waterproof phone battery cases, including MIGAFEI, GIN FOXI, BOPPS.

Written by

Harvey Wall

Harvey Wall was born and raised in Norwich. He mastered the art of tool production and finished at the prestigious Norwich University. His area of interest include cutting tools, abrasive finishing and power tools. Harvey is always looking for ways to improve the finesse of industrial tools via his myriads of researches. He also shares some of his experiences on many platforms while writing on tool products.