Top Smartphone Battery Cases of 2025

The best portable chargers are a great way to extend the battery life of your smartphone or other devices. However, many of these power banks can be quite bulky. A battery case offers a sleek, 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 must not only add extra power to your phone but also provide damage protection. You'll want 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 battery cases. However, some models may make your phone too bulky or fail to deliver a reliable charge. We've selected five top battery cases for popular smartphones to guide your choice.

In the market for a new phone? Explore our recommendations for the best phones currently available, including top-rated Android phones, iPhones, and devices optimized for gaming.

Battery cases not your thing? Check out our curated guides for other essential phone accessories, such as wireless and portable chargers, and screen protectors designed to protect your iPhone 16 Pro from 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 battery case that offers both protection and a significant battery boost. 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 daily use, but intensive activities like photography, social media scrolling, or gaming can quickly drain it. The Mophie Juice Pack Battery Case adds an additional 2,800mAh, ensuring longer usage. It easily attaches to your phone via the USB-C port, and an indicator light keeps you informed of the battery levels. The case also features a stand-by mode to prevent overcharging.

While the Juice Pack's battery capacity might not be the largest on the market, it provides a 50% boost to the iPhone 16 Pro's battery, striking a balance between added power and a compact form factor. Weighing just 3.5 ounces, it adds minimal bulk, making it one of the best iPhone accessories for those on the go.

In addition to extending battery life, this case offers robust protection, rated for falls up to 6 feet. Raised edges safeguard the screen and camera from scratches and cracks. Although it includes a passive magnet for accessory attachment, it does not support wireless charging.

2. ZeroLemon Battery Case

Best iPhone 16 Pro Max Battery Case

### ZEROLEMON Battery Case

0Protect and power your iPhone 16 Pro Max 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 boasts a substantial 4,685mAh battery, yet heavy use in features like Cinematic Mode or Apple Arcade gaming can deplete it quickly. ZeroLemon's battery case offers peace of mind with its two 5,000mAh batteries, providing nearly two full charges. LED indicators keep you updated on charging and battery levels.

Designed with durability in mind, this case offers military-grade protection and shockproofing, ensuring your phone remains safe from damage. However, the added 10,000mAh capacity does make it bulkier, suitable for those with larger hands. It supports 18W fast charging, fully recharging your phone in about two hours via USB-C, but lacks support for data transfer or wired headsets when connected.

3. Mophie Juice Pack Wireless

Best iPhone SE Battery Case

### Mophie Juice Pack Wireless

0Extend the battery life of your iPhone SE with this slim, lightweight case featuring a 2,525mAh battery and 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) delivers impressive performance for its price, but its 2,018mAh battery may not last a full day under heavy use. The Mophie Juice Pack Wireless solves this issue by providing a full additional charge, keeping you away from power outlets for longer periods.

This case not only extends your phone's battery life but also enhances its durability with a slim, protective shell. It includes safeguards against short-circuit, over-charge, and temperature issues. When it's time to recharge, simply place the case on a wireless charger, and both the case and your phone will power up. 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 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 offers a robust 4,000mAh battery for its size, but intensive use can quickly drain it. The Newdery Battery Case addresses this by adding an extra 8,000mAh, nearly doubling your phone's battery life. This is particularly useful when using demanding features like the camera or gaming without adding significant bulk.

The case easily slides onto your Galaxy S25 and connects via the USB-C port to deliver power. Even with the case attached, NFC and data transfer remain accessible through the USB-C port. It supports both wireless and fast charging via USB-C for quick recharges. Constructed with TPU and PC materials, the case also provides substantial 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

1Experience versatile charging with this universal battery that attaches to your phone and supports Qi wireless charging, complete with a built-in 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 fantastic, but they can become obsolete when you upgrade your phone. The Mophie Juice Pack Connect offers a solution that adapts to your current and future devices. Unlike traditional cases, it doesn't cover your phone but instead attaches a battery pack using a small anchor point.

With the Juice Pack Connect, you can attach the 5,000mAh battery pack as needed. It uses Qi wireless charging, making it compatible with a wide range of smartphones and capable of wireless recharging. Additionally, it includes a stand for convenient viewing while charging.

How to Choose the Best Battery Case

Selecting the right battery case isn't just about opting for the highest capacity. Oversized cases might not fit comfortably in your pocket. The ideal case balances battery capacity, size, and price.

If you only need a charger occasionally, a portable charger might be more practical than a dedicated battery case. Consider a case that fits comfortably in your pocket or bag without adding too much weight or bulk, while still providing protection for your phone.

High-capacity cases often sacrifice features like quick charging and Qi compatibility, which are essential if you plan to keep the case on your phone at all times. Wireless charging capabilities are particularly useful for simultaneous charging of both your phone and the battery case.

Battery Case FAQ

Are battery cases safe for your phone?

Yes, battery cases are safe for your phone as long as they are used correctly. Your phone will draw power from the case first, and only use its own battery once the case is depleted. Smartphones are designed to monitor battery health and prevent overcharging. The primary 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 the lithium-based batteries in battery cases. Doing so can actually harm the battery and reduce its capacity over time.