The best portable chargers can significantly extend the battery life of your smartphone or other devices. However, they can often be bulky. A battery case, on the other hand, offers a sleek alternative that's specifically designed for your phone, eliminating the need for cables that come 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 not only to provide extra power but also to offer protection against damage. It's crucial 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 and quick charging enhance the convenience of these cases. However, some battery cases can be too bulky or unreliable. To help you find the perfect match, we've selected five top-rated battery cases for leading smartphones.

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 and extended battery life with the compact Mophie Juice Pack 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 boasts a robust 3,582mAh battery, but activities like photography, social media scrolling, or gaming can drain it quickly. The Mophie Juice Pack Battery Case adds a 2,800mAh battery, ensuring your phone lasts longer. It easily attaches to the 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 it doesn't provide as much additional battery life as other options, the 50% boost to the iPhone 16 Pro's battery is significant. Its compact design adds minimal bulk and weighs only 3.5oz, making it one of the best iPhone accessories for on-the-go use.

The case also offers excellent protection with a 6ft drop rating, safeguarding your device from accidental falls. Raised edges protect the screen and camera from scratches and cracks. 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 safe and powered with the rugged ZeroLemon 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 Despite the iPhone 16 Pro Max's impressive 4,685mAh battery, intensive use like Cinematic Mode or Apple Arcade gaming can deplete it. The ZeroLemon Battery Case provides peace of mind with its dual 5,000mAh batteries, offering about 1.5 extra charges. LED indicators show the charging status and battery levels.

Designed for durability, this case offers military-grade protection and shockproofing, ensuring your phone remains safe. Its bulkier design suits those with larger hands, but it provides a substantial 10,000mAh capacity. With 18W fast charging via USB-C, your phone can reach full charge in about two hours, though it lacks data passthrough and wired headset support when connected.

3. Mophie Juice Pack Wireless

Best iPhone SE Battery Case

### Mophie Juice Pack Wireless

0Enhance your iPhone SE's battery life with the slim, lightweight Mophie Juice Pack Wireless, featuring a 2,525mAh battery and Qi charging support. 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 great performance at a budget-friendly price, but its 2,018mAh battery may struggle with intensive 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 adding significant bulk. It includes safeguards against short-circuits, over-charging, and temperature issues. The case can be recharged wirelessly, 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

0The NEWDERY Battery Case for the Samsung Galaxy S25 offers an 8,000 mAh battery, a 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's 4,000mAh battery is impressive, but heavy use can drain it quickly. The Newdery Battery Case provides an additional 8,000mAh, nearly two full charges, without significantly increasing the phone's size.

The case easily slides onto your Galaxy S25 and connects via the USB-C port, maintaining NFC and data transfer capabilities. It supports both wireless and fast charging, ensuring quick recharges. Beyond power, the case's TPU and PC materials offer robust 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

1The Mophie Juice Pack Connect is a versatile solution that wirelessly charges 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 with phone upgrades, but the Mophie Juice Pack Connect offers a universal solution. It doesn't cover your phone but attaches a 5,000mAh battery pack using a small anchor point on your phone or case. The battery uses Qi wireless charging, making it compatible with a wide range of smartphones and allowing for wireless recharging. It also comes with a stand for hands-free viewing.

How to Choose the Best Battery Case

Choosing the right battery case isn't just about finding the largest capacity; it's about balancing capacity with size and cost. If you're looking for something to carry in your bag, a portable charger might be more suitable. A battery case should fit comfortably in your pocket or bag without adding too much weight or bulk, while also providing protection.

High-capacity battery cases often lack features like quick or Qi charging, which are essential if you want to keep the case on your phone continuously. Wireless charging can be particularly useful for simultaneous charging of your phone and case.

Battery Case FAQ

Are battery cases safe for your phone?

Yes, battery cases are safe for your phone when used correctly. They provide power directly to your phone, and once the case's battery is depleted, your phone's battery takes over. Smartphones monitor battery health to prevent overcharging. The primary 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 even damage the battery, reducing its capacity over time.