The Best Battery Cases for Smartphones in 2025

The best portable chargers are an effective way to extend the battery life of your smartphone or other devices. However, many of these can be quite bulky. A battery case offers a sleeker alternative, specifically designed 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 offering protection against damage. It's important 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 models can make your phone too bulky or fail to provide a reliable charge. To help you find the perfect fit, we've selected five top battery cases for the leading smartphones on the market.

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

Battery cases not your thing? We've also curated guides for other essential phone accessories, such as wireless and portable chargers, and 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 this compact and protective battery case that offers a 2,800 mAh boost. 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 is generally sufficient for a day's moderate use, but activities like photography, social media browsing, or gaming can quickly drain it. The Mophie Juice Pack Battery Case for iPhone 16 Pro extends your phone's life with an additional 2,800mAh battery. The case easily attaches to your phone and connects via the USB-C port. An indicator light keeps you informed of the battery levels, and a stand-by mode prevents overcharging.

While the Juice Pack may not offer the largest battery boost, its 50% increase in battery life for the iPhone 16 Pro is significant. The case remains surprisingly compact, adding minimal bulk and weighing just 3.5oz, making it easy to handle and slip into a pocket or bag. This makes it one of the best iPhone accessories available.

The case also provides robust protection, rated for falls up to 6ft, helping to prevent the heart-stopping moments when your phone slips. Raised edges protect the screen and camera from scratches and cracks. Mophie includes an integrated passive magnet for attaching to various accessories, though it does not 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 charged 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 The iPhone 16 Pro Max's 4,685mAh battery is substantial, but for intensive use like Cinematic Mode or gaming on Apple Arcade, extra power is beneficial. ZeroLemon's battery case provides peace of mind with its two 5,000mAh batteries, offering about 1.5 additional charges. LED indicators show the charging status and battery levels.

ZeroLemon's case is built tough, with military-grade protection and shockproofing to safeguard your phone. While the added 10,000mAh capacity makes it bulkier, it's ideal 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. However, it does not support data passthrough or wired headsets when 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 that includes a 2,525mAh battery and supports Qi charging. 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 not last a full day with heavy use. The Mophie Juice Pack Wireless provides a full charge, extending your phone's usage time.

This case not only extends battery life but also adds protection without adding much bulk. It includes short-circuit, over-charge, and temperature protection to keep your device safe. You can recharge the case wirelessly, and it supports passthrough technology for connecting 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 has 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 4,000mAh battery, but heavy use can quickly drain it. The Newdery Battery Case adds an extra 8,000mAh, nearly two full charges, ensuring you stay powered up without adding much bulk.

The case easily slides onto your Galaxy S25 and connects via the USB-C port. It maintains NFC and data transfer capabilities even when attached. Wireless charging is supported, and fast charging via USB-C ensures quick recharges. The case also provides protection against damage using TPU and PC materials.

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 the versatility of this universal battery that attaches to your phone, offering wireless charging and 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 and future devices. 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 to your phone or case, allowing you to easily attach 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 includes a stand for convenient viewing.

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 simultaneous wireless charging of 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.