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 can be quite bulky. A battery case offers a sleeker solution tailored specifically to your phone, allowing you to bypass 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 must not only provide extra power but also offer protection against damage. It's crucial that they do not interfere with your phone's features, such as NFC or ports, and avoid adding excessive bulk. Features like wireless and quick charging can enhance the convenience of these cases. However, some models may either make your phone too chunky or fail to deliver a reliable charge. To assist you in finding the perfect fit, we've compiled a list of five top battery cases for the leading smartphones on the market.

In the market for a new phone? Explore our latest recommendations for the best phones to buy, including our top-rated Android phones, iPhones, and devices 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 shield your iPhone 16 Pro from any fall 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 battery case that offers both protection and additional power 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 is typically sufficient for a day's moderate use, but activities like photography, social media browsing, or gaming can drain it quickly. The Mophie Juice Pack Battery Case for iPhone 16 Pro adds a 2,800mAh battery, ensuring your device lasts longer. The case easily attaches to your phone and connects via the USB-C port, with an indicator light to monitor battery levels and a stand-by mode to prevent overcharging.

While the Juice Pack may not provide as much extra battery life as some alternatives, its 50% boost to the iPhone 16 Pro's battery is significant, maintaining a surprisingly compact form factor and minimal added weight of about 3.5oz. This makes the phone easy to handle and convenient to carry in a pocket or bag, positioning it as one of the best iPhone accessories available.

This case also offers robust protection for the iPhone, rated for falls up to 6ft, and includes raised edges to safeguard the screen and camera from scratches and cracks. Mophie includes an integrated passive magnet for attaching the iPhone 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 remains 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 might seem ample, but extended use, such as gaming on Apple Arcade or shooting in Cinematic Mode, can quickly deplete it. ZeroLemon's battery case provides peace of mind with its two 5,000mAh batteries, offering about 1.5 additional charges. LED indicator lights on the case keep you informed of the charging status and battery levels.

ZeroLemon’s case is built for durability, boasting military-grade protection and shockproofing to shield your phone from damage. While it offers an impressive 10,000mAh of extra power, this makes the case bulkier, best suited for users with larger hands. When connected via USB-C, the case supports speedy 18W fast charging, fully recharging your phone in about two hours. Unfortunately, it lacks support for data transfer or wired headsets when attached.

3. Mophie Juice Pack Wireless

Best iPhone SE Battery Case

### Mophie Juice Pack Wireless

0Extend the battery life of your iPhone SE with this sleek, lightweight case that includes a 2,525mAh battery and supports Qi wireless 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, but its 2,018mAh battery may struggle to last a full day under heavy use. The Mophie Juice Pack Wireless offers a full charge, helping you stay away from power outlets longer.

This case not only extends your phone's daily usage but also potentially increases its lifespan by providing a slim, protective shell that doesn't add much bulk. It features short-circuit, over-charge, and temperature protection to keep your device safe. When you need to recharge the case, simply place it on a wireless charger, and it will charge your phone simultaneously. 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 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 comes with a 4,000mAh battery, but intensive use can drain it quickly. The Newdery Battery Case offers an additional 8,000mAh of power—nearly two full charges—ensuring you have enough juice for extended use without adding significant bulk.

The case easily slides onto your Galaxy S25 and connects via the USB-C port to provide power. Even with the case attached, the USB-C port remains accessible for NFC and data transfer. If you have a wireless charger, you can charge both the case and phone simultaneously, though USB-C fast charging offers a quicker recharge. Beyond charging, the TPU and PC materials used in this case add a layer of 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

1Utilize this universal battery solution that attaches to your phone, offers 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 that uses Qi wireless chargingIncludes a standCONSSlightly confusing to attach the adapterBattery cases can become obsolete when you upgrade your phone, but the Mophie Juice Pack Connect offers a versatile solution. This isn't a traditional case, as it doesn't encase your phone, but rather attaches a battery to it.

With the Juice Pack Connect, you attach a small anchor point to your phone or phone case, allowing you to easily connect the 5,000mAh battery pack when needed. The battery uses Qi wireless charging, compatible with a wide range of smartphones, and can be recharged wirelessly. 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. Opting for the highest capacity might lead you to a product too large for your pocket. The ideal charging case strikes a balance between battery capacity, size, and price.

If you only need a battery case occasionally, consider a portable charger instead. There's no benefit in buying a case molded to your phone if you're not using it regularly, as this could limit space for more energy cells. Thus, finding a battery case that fits comfortably in your pocket or bag without adding too much weight or bulk is key, while also providing necessary protection for your phone.

Choosing the highest capacity often means sacrificing features like quick charging and Qi charging capabilities. These features are crucial if you plan to keep the charging case on your phone at all times and especially handy for simultaneous wireless charging of both your phone and the battery case.

Battery Case FAQ

Are battery cases safe for your phone?

Yes, battery cases are generally safe for your phone's battery when 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 mechanisms to monitor battery charging and prevent overloading. The main concern is potential overheating if the case lacks adequate 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 might even damage the battery, reducing its capacity over time.