Top Smartphone Battery Cases of 2025

The best portable chargers are a fantastic way to extend the battery life of your smartphone or other devices. However, many of these can be bulky and cumbersome. A battery case offers a sleek alternative that fits your phone perfectly, eliminating the need for cable management that often comes with traditional power banks.

TL;DR – The Best Smartphone Battery Cases:

### Mophie Juice Pack Battery Case

0See it at Amazon### ZEROLEMON Battery Case

0See it at Amazon### Mophie Juice Pack Wireless

0See it at Amazon### NEWDERY Battery Case

0See it at Amazon### Mophie Juice Pack Connect

1See it at AmazonBattery cases are essential for adding extra power to your phone while also offering protection against damage. You'll want a case that doesn't interfere with your phone's features, such as NFC or ports, and one that doesn't add too much bulk. Features like wireless and quick charging enhance the convenience of battery cases. However, some options might make your phone too bulky or fail to deliver a reliable charge. To help you find the perfect match, we've compiled a list of five top-rated battery cases for leading smartphones.

In the market for a new phone? Check out our current recommendations for the best phones to buy right now, including our top picks for Android phones, iPhones, and gaming-focused devices.

Battery cases not your thing? We've also curated guides for other useful phone accessories, such as wireless and portable chargers, and screen protectors to shield your iPhone 16 Pro from any potential damage.

1. Mophie Juice Pack Battery Case

Best iPhone 16 Pro Battery Case

### Mophie Juice Pack Battery Case

0Experience enhanced protection and additional battery life with this compact case designed for the iPhone 16 Pro. See it at AmazonProduct SpecificationsCapacity2,800 mAhSize6.5" x 2.9" x 0.71" Weight3.5 ouncesPROSCompact and lightweightIncludes integrated passive magnet for accessoriesCONSLimited battery sizeThe iPhone 16 Pro's 3,582mAh battery typically lasts throughout the day with moderate use, but intensive activities like photography, social media browsing, or gaming can drain it quickly. The Mophie Juice Pack Battery Case for iPhone 16 Pro extends your phone's battery life with an additional 2,800mAh. The case easily attaches to the phone via the USB-C port and features an indicator light to show battery levels, with a standby mode to prevent overcharging.

While the Juice Pack may not provide as much extra battery life as some other options, it boosts the iPhone 16 Pro by 50%, which is significant. Its compact design adds minimal bulk and weighs only 3.5oz, making it easy to handle and store in a pocket or bag, making it one of the best iPhone accessories available.

This case also offers excellent protection, with a rating for falls up to 6ft, helping to prevent the heart-stopping moments when your device slips. Raised edges protect the screen and camera from scratches and cracks. Though it includes an integrated passive magnet for attaching to various accessories, it does not support wireless charging.

2. ZeroLemon Battery Case

Best iPhone 16 Pro Max Battery Case

### ZEROLEMON Battery Case

0Safeguard and power up your iPhone 15 Pro Max with this rugged case equipped with two 5,000 mAh batteries and military-grade protection. See it at AmazonProduct SpecificationsCapacity10,000 mAh (2 x 5,000 mAh)Size6.74" x 3.48" x 0.99"Weight8.5 ouncesPROSMilitary-grade protection and shockproofingSupports 18W fast chargingCONSNo data passthrough The iPhone 16 Pro Max comes with a robust 4,685mAh battery, yet for prolonged use in Cinematic Mode or Apple Arcade, extra power is beneficial. ZeroLemon’s battery case provides peace of mind with its dual 5,000mAh batteries, adding approximately 1.5 full charges to your phone. LED indicators keep you informed about the charging status and battery levels.

This case is designed with durability in mind, offering military-grade protection and shockproofing to shield your phone from damage. Its added 10,000mAh capacity makes it bulkier, suitable for users with larger hands. When connected via USB-C, the case supports speedy 18W fast charging, taking your phone from 0% to 100% in about two hours. However, it does not support data passthrough or wired headsets while attached.

3. Mophie Juice Pack Wireless

Best iPhone SE Battery Case

### Mophie Juice Pack Wireless

0Boost your iPhone SE's battery life with this slim, lightweight case featuring a 2,525mAh battery and Qi charging capabilities. See it at AmazonProduct SpecificationsCapacity2,525mAhSize2.81" x 4.14 x 0.66"Weight3.51 ouncesPROSSlim, lightweight designSupports Qi wireless chargingCONSOnly provides enough battery for one full phone chargeThe iPhone SE (2022) is a powerful budget-friendly smartphone, renowned for its performance on the latest iOS. However, its 2,018mAh battery can struggle with intensive use throughout the day. The Mophie Juice Pack Wireless offers a full charge, extending your phone's usage without frequent trips to a power outlet.

This case not only extends battery life but also enhances the phone's durability with a slim, protective shell that doesn't add much bulk. It includes short-circuit, over-charge, and temperature protection to keep your device safe. When it's time to recharge, simply place it on a wireless charger, and both the case and phone will power up. Passthrough technology allows you to connect a lightning cable or headphones without removing the case.

4. Newdery Battery Case

Best Samsung Galaxy S25 Case

### NEWDERY Battery Case

0Enhance your Samsung Galaxy S25 with this 8,000 mAh battery case that supports wireless charging and features a compact design. See it at AmazonProduct SpecificationsCapacity8,000 mAhSizeNot listedWeight2.82 ouncesPROSDisplay shows charging percentagesSupports wireless chargingCONSDifficult to remove phone from caseThe Samsung Galaxy S25 boasts a high-capacity 4,000mAh battery, yet intensive use can quickly deplete it. The Newdery Battery Case offers an additional 8,000mAh, providing nearly two full charges, ensuring you stay powered up even during heavy use like gaming or photography without adding excessive bulk.

The case easily slides onto your Galaxy S25 and connects via the USB-C port to deliver power. Even with the case attached, the USB-C port remains functional for NFC and data transfer. Wireless charging is supported, and fast charging via USB-C ensures quick recharges. The case's TPU and PC materials provide robust protection against potential damage.

This case is also available for the Galaxy S25 Plus and Galaxy S25 Ultra models.

5. Mophie Juice Pack Connect

Best Battery Case for Any Phone

### Mophie Juice Pack Connect

1Enjoy the versatility of this universal battery that wirelessly charges your phone and includes a handy stand. See it at AmazonProduct SpecificationsCapacity5,000 mAhSize2.7" x 4.09" x 0.56" Weight4.4 ouncesPROSUniversal design that uses Qi wireless chargingIncludes a standCONSSlightly confusing to attach the adapterBattery cases are great, but they often become obsolete when you upgrade your phone. The Mophie Juice Pack Connect offers a solution that works with your current phone and likely your next one too. This isn't a traditional case but rather a battery pack that attaches to your phone.

With the Juice Pack Connect, you attach a small anchor point to your phone or case, allowing you to easily connect the 5,000mAh battery pack when needed. It uses Qi wireless charging, making it compatible with a wide range of smartphones and capable of wireless recharging. It also comes with a stand for convenient viewing of videos or documents.

How to Choose the Best Battery Case

Choosing the right battery case isn't just about finding the one with the largest capacity; it's about balancing capacity, size, and price. If you're looking for something to carry in your bag, a portable charger might be more suitable. A battery case should fit comfortably in your pocket or bag without adding too much weight or bulk, while also providing protection for your phone.

High-capacity battery cases often sacrifice features like quick charging and Qi charging for more energy storage. These features are crucial if you plan to keep the case on your phone at all times, especially for the convenience of simultaneous wireless charging of both your phone and the case.

Battery Case FAQ

Are battery cases safe for your phone?

Yes, battery cases are safe for your phone as long as they are used correctly. Your phone draws power directly from the case, and once the case is depleted, it switches to the phone's battery. Smartphones have built-in monitoring to prevent overcharging. The main concern is overheating if the case lacks proper ventilation.

Should you drain your battery case before charging?

No, it's not necessary to fully drain lithium-based batteries in battery cases. Doing so can actually damage the battery and reduce its capacity over time.