Top Smartphone Battery Cases of 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 more streamlined solution that's specifically designed for your phone, eliminating the need for cable management often associated 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 can make battery cases even more convenient. However, some options might make your phone too bulky or fail to deliver 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, plus our best-reviewed Android phones, iPhones, and phones purpose-built for gaming.

Battery cases not your thing? We've also got hand-picked guides for other useful phone accessories like wireless and portable chargers, and screen protectors to save your iPhone 16 Pro from taking any fall damage.

1. Mophie Juice Pack Battery Case

Best iPhone 16 Pro Battery Case

### Mophie Juice Pack Battery Case

0Experience enhanced protection, additional power, and a sleek design with this battery 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 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 about the battery levels, and a stand-by mode prevents overcharging.

While the Juice Pack may not offer as much extra battery life as some other options, it provides a significant 50% boost to the iPhone 16 Pro, maintaining a compact form that adds minimal bulk and weighs just 3.5oz. The phone remains easy to handle and fits comfortably in a back pocket or bag, making it one of the best iPhone accessories available.

This case also offers robust protection for your iPhone, with a drop resistance up to 6ft. Raised edges safeguard 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 impressive 4,685mAh battery might seem sufficient, 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 on the case 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

0Power up your iPhone SE with this slim, lightweight protective 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) is a powerful budget smartphone, known for its performance on the latest iOS at a low price. However, its 2,018mAh battery may not last a full day with intensive use. The Mophie Juice Pack Wireless offers a full charge, extending your phone's usage time.

This Mophie case not only extends your phone's daily usage but also potentially increases its lifespan with a slim, protective shell that doesn't add much bulk. It includes short-circuit, over-charge, and temperature protection. When it's time to recharge, simply place it 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

0With an 8,000 mAh battery, a compact design, and wireless charging, the NEWDERY Battery Case for the Samsung Galaxy S25 offers a lot. 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, but heavy use can quickly drain it. The Newdery Battery Case provides an additional 8,000mAh, nearly two full charges, ensuring you never run out of power when using demanding features like the camera or gaming, without adding much bulk.

The Newdery Battery Case easily slides onto your Galaxy S25 and connects via the USB-C port. Even with the case attached, the USB-C port supports NFC and data transfer. Wireless charging is available, but for faster charging, use the USB-C port. Beyond charging, the TPU and PC materials offer substantial 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

1Get this universal battery that attaches to your phone, wirelessly charging it, and even 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 is a versatile 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 to your phone or case, allowing you to easily slip on the 5,000mAh battery pack when needed. It uses Qi wireless charging, supporting a wide range of smartphones and enabling wireless recharging. It also comes with a stand for propping up your phone while watching videos or reviewing documents.

How to Choose the Best Battery Case

Choosing the right battery case isn't just about finding the one with the largest capacity. That could result in a case too large for your pocket. The ideal charging case balances battery capacity, size, and price.

If you're looking for something to carry in your bag, a portable charger might be more suitable. There's no need for a phone-specific case if you won't use it attached to your phone, as this could mean less space for energy cells. You need a battery case that fits comfortably in your pocket or bag without adding too much weight or bulk, while also providing protection for your phone.

Another consideration is that the highest 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 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. Doing so can actually damage the battery and reduce its capacity over time.