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, these power banks can often be bulky and cumbersome. A battery case offers a sleeker, more tailored solution for your phone, eliminating the hassle of cable management that 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 not only provide extra power to your phone but also offer essential protection against damage. You'll want 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 can make battery cases even more convenient. However, there are some less effective options that might make your phone too bulky or fail to deliver a reliable charge. To assist you in finding the perfect battery case, we've selected five top choices for the leading phones on the market.

In the market for a new phone? Explore our latest recommendations for the best phones, including our top-rated Android phones, iPhones, and phones designed specifically for gaming.

Battery cases not your thing? We also offer curated guides for other essential phone accessories, such as wireless and portable chargers, and screen protectors to safeguard 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

0Enhance your iPhone 16 Pro with a compact design that offers both protection and additional battery life. See it at AmazonProduct SpecificationsCapacity2,800 mAhSize6.5" x 2.9" x 0.71" Weight3.5 ouncesPROSCompact and lightweightIntegrated passive magnet for accessoriesCONSLimited battery capacityThe iPhone 16 Pro's 3,582mAh battery typically lasts a day with moderate use, but activities like photography, social media scrolling, or gaming can quickly drain it. The Mophie Juice Pack Battery Case for the iPhone 16 Pro adds an extra 2,800mAh, extending your phone's life significantly. The case easily attaches to the phone via the USB-C port, and an indicator light keeps you informed about battery levels. The case also features a standby mode to prevent overcharging.

While the Juice Pack might not offer as much extra battery life as some other options, it still provides a 50% boost to the iPhone 16 Pro, making it surprisingly compact and lightweight at just 3.5 ounces. The phone remains easy to handle and fits comfortably in a pocket or bag, making it one of the best iPhone accessories available.

This case also offers robust protection for the iPhone 16 Pro, with a rating for falls up to 6 feet. Raised edges protect the screen and camera from scratches and cracks. Mophie includes an integrated passive magnet for attaching various accessories, although it does not support wireless charging.

2. ZeroLemon Battery Case

Best iPhone 16 Pro Max Battery Case

### ZEROLEMON Battery Case

0Ensure your iPhone 16 Pro Max stays powered and protected 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 shockproofing18W fast charging supportCONSNo data passthroughThe iPhone 16 Pro Max's 4,685mAh battery is substantial, but for intensive use such as Cinematic Mode or Apple Arcade gaming, extra power is essential. ZeroLemon's battery case provides peace of mind with its two 5,000mAh batteries, offering approximately 1.5 additional full charges. LED indicators on the case show the charging status and battery levels.

ZeroLemon's case is built tough, offering 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. The case supports 18W fast charging via USB-C, enabling a full charge in about two hours. However, it does not support data transfer or wired headset use when connected.

3. Mophie Juice Pack Wireless

Best iPhone SE Battery Case

### Mophie Juice Pack Wireless

0Enhance 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 and lightweightQi wireless charging supportCONSProvides only one full chargeThe iPhone SE (2022) offers impressive performance for its price, but its 2,018mAh battery may not last a full day with intensive use. The Mophie Juice Pack Wireless provides a complete charge, extending your time away from power outlets.

Beyond extending battery life, this Mophie case adds protection without significant bulk. It features short-circuit, over-charge, and temperature protection to keep your device safe. When recharging, simply place the case on a wireless charger to juice up both the case and your phone. 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

0Equip your Samsung Galaxy S25 with this 8,000 mAh battery case that offers compact design and wireless charging. See it at AmazonProduct SpecificationsCapacity8,000 mAhSizeNot listedWeight2.82 ouncesPROSDisplays charging percentagesSupports wireless chargingCONSDifficult to remove phone from caseThe Samsung Galaxy S25's 4,000mAh battery is impressive for its size, but daily use can still drain it quickly. The Newdery Battery Case provides an additional 8,000mAh, nearly two full charges, ensuring you can use demanding features like cameras and gaming without running out of power.

The Newdery case slides onto your Galaxy S25 and connects via the USB-C port. It maintains NFC and data transfer capabilities, even with the case attached. Wireless charging is supported, though USB-C fast charging offers quicker recharges. The case also adds a layer of protection with its 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 versatile charging with this universal battery pack that attaches to your phone, supports Qi wireless charging, and includes a handy stand. See it at AmazonProduct SpecificationsCapacity5,000 mAhSize2.7" x 4.09" x 0.56" Weight4.4 ouncesPROSUniversal design with Qi wireless chargingIncludes a standCONSSlightly confusing adapter attachmentBattery cases can become obsolete when you upgrade your phone, but the Mophie Juice Pack Connect offers a solution that adapts to 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 point to your phone or case, allowing you to connect the 5,000mAh battery pack as needed. It uses Qi wireless charging, supporting a wide range of smartphones and enabling wireless recharging. The included stand is perfect for watching videos or reviewing documents.

How to Choose the Best Battery Case

Selecting the perfect battery case isn't just about finding the one with the largest capacity; it's also about finding a balance between capacity, size, and price. If you're looking for something to carry in your bag, consider a portable charger instead. A battery case should fit comfortably in your pocket or bag without adding too much weight or bulk, while also providing necessary protection.

Choosing a high-capacity battery case might mean sacrificing features like quick charging and Qi charging. These features are crucial if you plan to keep the case on your phone continuously, as they allow for simultaneous charging of both the case and the phone.

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 until it's depleted, then switches to its own battery. Smartphones have built-in monitoring to prevent overcharging. The main risk 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. In fact, completely draining them can damage the battery and reduce its capacity over time.