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, these can often be bulky, which is where a battery case comes in handy. A battery case not only provides a sleeker solution tailored to your specific phone model but also eliminates the need for 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 are designed to not only add extra power to your phone but also offer 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 enhance the convenience of battery cases. However, not all battery cases are created equal; some may make your phone too bulky or fail to provide a reliable charge. To assist you in your search, we've compiled a list of five top battery cases for popular phone models.

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 optimized for gaming.

Battery cases not your thing? We've also curated guides for other essential phone accessories like wireless and portable chargers, and screen protectors to shield your iPhone 16 Pro from fall damage.

1. Mophie Juice Pack Battery Case

Best iPhone 16 Pro Battery Case

### Mophie Juice Pack Battery Case

0Experience the perfect blend of protection and power with the Mophie Juice Pack Battery Case for the iPhone 16 Pro. Its compact design adds minimal bulk while providing a significant boost to your phone's battery life. 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. However, activities like photography, social media scrolling, or gaming can drain it quickly. The Mophie Juice Pack Battery Case for iPhone 16 Pro, with its 2,800mAh battery, extends your phone's longevity. The case easily connects to your phone via the USB-C port, and an indicator light keeps you informed about the battery levels. The case also features a stand-by mode to prevent overcharging.

While the Juice Pack doesn't provide as much extra battery life as some other options, the 50% boost it offers to the iPhone 16 Pro is substantial. Its lightweight design at about 3.5 ounces means it remains easy to handle and fits comfortably in a back pocket or bag, making it one of the best iPhone accessories available.

Beyond battery life, this case offers robust protection, rated for falls up to 6ft, and features 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 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 robust case, which features 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 Despite the iPhone 16 Pro Max's substantial 4,685mAh battery, you may still need additional power for intensive activities like using Cinematic Mode or playing games on Apple Arcade. The ZeroLemon Battery Case provides peace of mind with its two 5,000mAh batteries, offering approximately 1.5 extra charges. LED indicator lights keep you updated on the charging status and battery levels.

Designed with durability in mind, the ZeroLemon case offers military-grade protection and shockproofing to safeguard your phone from damage. While it adds significant bulk due to the 10,000mAh capacity, it's ideal for users 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 lacks support for data passthrough or wired headsets when the case is attached.

3. Mophie Juice Pack Wireless

Best iPhone SE Battery Case

### Mophie Juice Pack Wireless

0Enhance your iPhone SE's battery life with this sleek, 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, delivering excellent performance on the latest iOS version. However, its 2,018mAh battery may not last a full day with heavy use. The Mophie Juice Pack Wireless offers a full charge, allowing you to stay away from power outlets longer.

This Mophie case not only extends your phone's daily usage but also protects it with a slim shell that doesn't add much bulk. It features short-circuit, over-charge, and temperature protection to keep your device safe. You can recharge the case wirelessly using a Qi charger, 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

0Maximize your Samsung Galaxy S25's battery life with this compact case that boasts an 8,000 mAh battery and supports wireless charging. 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 intensive use can quickly drain it. The Newdery Battery Case provides an additional 8,000mAh of power—nearly two full charges—without adding significant bulk, ensuring you stay powered even during heavy use.

The Newdery Battery Case easily slides onto your Galaxy S25 and connects via the USB-C port to deliver power. It maintains NFC and data transfer capabilities through the USB-C port, and supports wireless charging for convenience. The case also uses TPU and PC materials for added protection against potential 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

1Enhance any smartphone's battery life with this versatile, universal battery that attaches wirelessly 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 is a versatile solution that works with your current and future devices. Unlike traditional cases, it doesn't cover your phone but instead attaches a 5,000mAh battery pack using a small anchor point.

With the Juice Pack Connect, you can easily attach the battery pack when needed, utilizing Qi wireless charging to support a variety of smartphones. It can also be recharged wirelessly and comes with a stand for convenient viewing.

How to Choose the Best Battery Case

Choosing the right battery case isn't just about the largest capacity. A case that's too big won't fit comfortably in your pocket. The ideal charging case strikes a balance between battery 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 molded to fit your phone is only beneficial if you intend to use it with the case on, otherwise, you're sacrificing space for more energy cells. Therefore, choose 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.

High-capacity battery cases often sacrifice features like quick charging and Qi charging capabilities. If you plan to keep the case on your phone at all times, these features are crucial, especially for simultaneous wireless charging of your phone and case.

Battery Case FAQ

Are battery cases safe for your phone?

Yes, battery cases are safe for your phone's battery when used correctly. They supply power directly to your phone, and once drained, your phone will switch to its internal battery. Smartphones are equipped with systems to prevent overcharging. The only concern might be 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 harm the battery, reducing its capacity over time.