Top Smartphone Battery Cases of 2025

The best portable chargers can significantly extend the battery life of your smartphone or other devices. However, these can often be bulky and cumbersome. A battery case offers a sleeker, more tailored solution for your phone, eliminating the need for cable management 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 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 can enhance the convenience of battery cases. However, some models may be too bulky or fail to deliver a reliable charge. To assist you in your search, we've compiled a list of five top battery cases for leading smartphones.

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

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 scrolling, or gaming can quickly drain it. The Mophie Juice Pack Battery Case for iPhone 16 Pro extends its battery life with an additional 2,800mAh. The case easily attaches to the phone and connects via the USB-C port. An indicator light shows battery levels, and a stand-by mode prevents 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 is one of the best iPhone accessories available.

It also provides robust protection, rated for falls up to 6ft, and features raised edges to protect 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 4,685mAh battery is substantial, but for intensive use like Cinematic Mode or Apple Arcade gaming, 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 it adds significant bulk due to the 10,000mAh capacity, 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

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) 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 usage time.

This case not only extends battery life but also adds protection without adding much bulk. It includes short-circuit, over-charge, and temperature protection. You can recharge the case wirelessly, 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

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's 4,000mAh battery is impressive for its size, but heavy use can drain it quickly. The Newdery Battery Case provides an additional 8,000mAh, nearly two full charges, without adding much bulk.

The case slides onto your Galaxy S25 and connects via the USB-C port, maintaining NFC and data transfer capabilities. It supports wireless charging, and fast charging via USB-C ensures quick recharges. The case also offers protection against damage using TPU and PC materials.

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

1This universal battery 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 and future phones. It's not a traditional case but attaches a battery to your phone.

With the Juice Pack Connect, you attach a small anchor to your phone or case, then slip on the 5,000mAh battery pack as needed. It uses Qi wireless charging, supporting various smartphones and allowing for wireless recharging. It also comes with a stand for propping up your phone.

How to Choose the Best Battery Case

Choosing the right battery case isn't just about finding the one with the largest capacity; it's about balancing capacity, size, and price. If you only need a charger for 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 sacrifice features like quick and wireless charging. If you plan to keep the case on your phone constantly, 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 if used correctly. They supply power directly to your phone, and once the case is depleted, your phone's battery takes over. 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 damage the battery and reduce its capacity over time.