Top Smartphone Battery Cases of 2025

The best portable chargers are an excellent way to extend the battery life of your smartphone or other devices. However, many of these chargers can be cumbersome. A battery case offers a sleeker, more tailored solution for your phone, 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 providing protection against damage. It's crucial to choose a case that doesn't interfere with your phone's features, such as NFC or ports, and doesn't add excessive bulk. Features like wireless charging and quick charging enhance the convenience of battery cases. However, some options may make your phone too bulky or fail to deliver a reliable charge. To help you find the best fit, we've compiled a list of five top battery cases for popular smartphones.

In the market for a new phone? Explore our current recommendations for the best phones to buy right now, including our top-reviewed Android phones, iPhones, and devices optimized for gaming.

Battery cases not your thing? We also offer curated guides for other essential phone accessories like wireless and portable chargers, as well as screen protectors to safeguard your iPhone 16 Pro from any falls.

1. Mophie Juice Pack Battery Case

Best iPhone 16 Pro Battery Case

### Mophie Juice Pack Battery Case

0Enhance your iPhone 16 Pro with added protection and extended battery life, all in a compact design. 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 scrolling, or gaming can drain it quickly. The Mophie Juice Pack Battery Case for iPhone 16 Pro adds an additional 2,800mAh, ensuring longer usage. The case easily attaches to the phone and connects via the USB-C port, with an indicator light to show battery levels and a standby mode to prevent overcharging.

While the Juice Pack may not offer the largest battery boost, its 50% increase to the iPhone 16 Pro's battery life is significant. It remains surprisingly compact, adding minimal bulk and weighing just 3.5oz, making it easy to handle and slip into a pocket or bag, thus earning its place among the best iPhone accessories.

This case also provides robust protection, rated for falls up to 6ft, which helps prevent the anxiety of dropping your phone. Raised edges safeguard the screen and camera from scratches and cracks. Mophie includes an integrated passive magnet for attaching the iPhone to various accessories, though it doesn't support wireless charging.

2. ZeroLemon Battery Case

Best iPhone 16 Pro Max Battery Case

### ZEROLEMON Battery Case

0Ensure your iPhone 15 Pro Max stays safe and powered with this rugged case featuring 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 With its substantial 4,685mAh battery, the iPhone 16 Pro Max typically doesn't require additional power. However, for intensive use like Cinematic Mode or gaming via Apple Arcade, ZeroLemon's battery case offers peace of mind with two 5,000mAh batteries, providing about 1.5 extra charges. LED indicators show the charging status and battery levels.

ZeroLemon's case boasts military-grade protection and shockproofing for enhanced durability. While the added 10,000mAh capacity makes the case bulkier, it's suitable for those with larger hands. When connected via USB-C, the case supports speedy 18W fast charging, fully charging your phone in about two hours. Unfortunately, it lacks support for data transfer or wired headsets through the USB-C port when the case is attached.

3. Mophie Juice Pack Wireless

Best iPhone SE Battery Case

### Mophie Juice Pack Wireless

0Boost your iPhone SE's battery life with this sleek, lightweight protective case featuring a 2,525mAh battery and Qi charging support. 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) offers impressive performance for its price, but its 2,018mAh battery may struggle to last a full day with intensive use. The Mophie Juice Pack Wireless provides a full charge, extending your phone's uptime without needing to be near a power outlet.

This case not only extends battery life but also protects your device within a slim shell, adding minimal bulk. It includes short-circuit, over-charge, and temperature protection to keep your phone safe. You can recharge the case using a wireless charger, and it supports passthrough technology for lightning cables or headphones, so you never need to remove the case.

4. Newdery Battery Case

Best Samsung Galaxy S25 Case

### NEWDERY Battery Case

0Enhance your Samsung Galaxy S25 with an 8,000 mAh battery, compact design, and wireless charging capabilities. See it at AmazonProduct SpecificationsCapacity8,000 mAhSizeNot listedWeight2.82 ouncesPROSDisplay shows charging percentagesSupports wireless chargingCONSDifficult to remove phone from caseThe Samsung Galaxy S25's 4,000mAh battery is impressive for its size, but heavy use can deplete it quickly. The Newdery Battery Case provides an additional 8,000mAh, almost two full charges, ensuring you stay powered without adding significant bulk.

The case slides onto your Galaxy S25 and connects via the USB-C port to deliver power. Even with the case attached, NFC and data transfer remain available through the USB-C port. You can recharge the case and phone wirelessly, but fast charging via USB-C is also an option. The TPU and PC materials used in the case offer protection against 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

1Experience universal battery support with this Qi-enabled battery pack that attaches to your phone and includes a convenient 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 adapterWhile battery cases are great, they often become obsolete when you upgrade your phone. The Mophie Juice Pack Connect is a versatile solution that works with your current phone and likely your next one. This device isn't a traditional case but a battery pack that attaches to your phone.

The Juice Pack Connect uses a small anchor point on your phone or case, allowing you to easily attach the 5,000mAh battery pack as needed. It utilizes Qi wireless charging, supporting a variety of smartphones and offering wireless recharging. It also comes with a stand for hands-free viewing of videos or documents.

How to Choose the Best Battery Case

Choosing the right battery case isn't just about selecting the one with the largest capacity. You'll want to consider the balance between battery capacity, size, and price. If you only need a backup for emergencies, a portable charger might be more suitable than a bulky case. The ideal case should fit comfortably in your pocket or bag without adding excessive weight or bulk while still providing protection for your phone.

High-capacity battery cases often sacrifice features like quick charging and Qi charging capabilities to store more energy. These features are essential if you plan to keep the case on your phone continuously, especially for simultaneous wireless charging of both the phone and the case.

Battery Case FAQ

Are battery cases safe for your phone?

Yes, battery cases are safe for your phone if used correctly. They supply power directly to your phone, and once the case's battery is depleted, your phone's battery takes over. Smartphones monitor battery health 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 the lithium-based batteries in battery cases. Doing so can damage the battery and reduce its capacity over time.