The Best Battery Cases for Smartphones in 2025

The best portable chargers are an essential tool for extending the battery life of your smartphone or other devices. However, these power banks can often be bulky and cumbersome. A battery case offers a sleek, tailored solution that not only boosts your phone's battery but also eliminates the hassle of managing cables 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 designed to not only extend your phone's battery life but also provide essential protection against damage. It's crucial that these cases do not interfere with your phone's features, such as NFC or ports, and they should not 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 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? Explore our latest recommendations for the best phones to buy, including our top-rated Android phones, iPhones, and gaming-focused devices.

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 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, offering 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, but activities like photography, social media browsing, or gaming can quickly drain it. The Mophie Juice Pack Battery Case for iPhone 16 Pro adds an additional 2,800mAh, ensuring your phone 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 offer the largest battery boost, its 50% increase in battery life for the iPhone 16 Pro is significant. It remains compact, adding minimal bulk and weighing just 3.5oz, making it easy to handle and carry. This case also provides robust protection, rated for falls up to 6ft, and features raised edges to protect the screen and camera. Mophie includes an integrated passive magnet for attaching 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 16 Pro Max stays charged 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 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. The case supports 18W fast charging, fully charging your phone in about two hours via USB-C, though 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 uptime.

This case not only extends battery life but also adds protection without significant bulk. It includes short-circuit, over-charge, and temperature protection. The case supports wireless charging, and passthrough technology allows for the use of 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 compact case featuring an 8,000 mAh battery 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's 4,000mAh battery is impressive for its size, but heavy usage can drain it quickly. 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, maintaining NFC and data transfer capabilities. It supports wireless charging, and the TPU and PC materials provide robust protection. 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 universal battery support with this Qi-enabled battery pack that attaches to your phone 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 battery pack attaches to your phone via a small anchor point, supporting a variety of smartphones with Qi wireless charging. It also includes a stand for convenient viewing.

How to Choose the Best Battery Case

Selecting the right battery case involves more than just choosing the one with the highest capacity. You need to balance battery capacity, size, and price to find the perfect fit. If you only need a charger occasionally, a portable charger might be more suitable. A good battery case should fit comfortably in your pocket or bag, add minimal weight and bulk, and provide adequate protection.

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 continuously, 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 when used correctly. They supply power directly to your phone, and once the case's battery is depleted, your phone's battery takes over. Smartphones have built-in safeguards to prevent overcharging. The main concern is overheating, which can be mitigated with 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.