Top Smartphone Battery Cases of 2025 Revealed

The best portable chargers are an excellent way to extend the battery life of your smartphone or other devices. However, many of these can be quite bulky. A battery case offers a sleek alternative specifically designed for your phone, eliminating the hassle of dealing with 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 must not only add extra power to your phone but also provide protection from damage. You'll want a case that doesn't interfere with your phone's features, such as NFC or ports, and that doesn't add excessive bulk. Features like wireless and quick charging enhance the convenience of battery cases. However, some models can be overly bulky or fail to deliver a reliable charge. To assist you in your search, we've selected five top-rated battery cases for the leading smartphones on the market.

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

0Enjoy enhanced protection, additional power, and a compact 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 should last throughout the day with moderate usage, but activities like photography, scrolling, or gaming can drain it faster. The Mophie Juice Pack Battery Case for iPhone 16 Pro extends your phone's battery life with its 2,800mAh capacity. The case easily attaches to your 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 provide as much additional battery life as other options, it offers a significant 50% boost to the iPhone 16 Pro, maintaining a compact profile. At just 3.5oz, it adds minimal bulk, making your phone easy to handle and fit into a pocket or bag, positioning it as one of the best iPhone accessories available.

This case also offers robust protection, rated for falls up to 6ft, helping to safeguard your device from accidental drops. Raised edges protect the screen and camera from scratches and cracks. Although it includes a passive magnet for attaching to various accessories, it does not support wireless charging.

2. ZeroLemon Battery Case

Best iPhone 16 Pro Max Battery Case

### ZEROLEMON Battery Case

0Keep your iPhone 16 Pro Max safe and powered with this rugged case that includes 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 With its large 4,685mAh battery, the iPhone 16 Pro Max typically doesn't require additional power. However, if you're frequently using Cinematic Mode or gaming on Apple Arcade, extra battery life becomes essential. ZeroLemon’s battery case offers peace of mind with its two 5,000mAh batteries, providing about 1.5 extra charges. LED indicators show the charging status and battery levels.

Designed for durability, ZeroLemon's case offers military-grade protection and shockproofing to shield your phone from damage. Although it adds significant bulk due to the extra 10,000mAh capacity, it's ideal for those with larger hands. When connected via USB-C, it supports speedy 18W fast charging, fully charging your phone in about two hours. Unfortunately, it does not support data transfer or wired headsets through the USB-C port when the case is attached.

3. Mophie Juice Pack Wireless

Best iPhone SE Battery Case

### Mophie Juice Pack Wireless

0Enhance the battery life of your iPhone SE with this slim, lightweight case that houses 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 at a budget-friendly price, but its 2,018mAh battery may struggle to last through a day of intensive use. The Mophie Juice Pack Wireless is the perfect solution, providing a full charge to keep you away from power outlets longer.

This Mophie case not only extends your phone's daily usage but also enhances its longevity with a slim, protective shell that doesn't add much bulk. It includes safeguards against short-circuiting, over-charging, and temperature fluctuations. When it's time to recharge, you can use a wireless charger to power both the case and your phone. 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

0Experience extended battery life with an 8,000 mAh capacity, compact design, and wireless charging capability with the NEWDERY Battery Case for the Samsung Galaxy S25. See it at AmazonProduct SpecificationsCapacity8,000 mAhSizeNot listedWeight2.82 ouncesPROSDisplay shows charging percentagesSupports wireless chargingCONSDifficult to remove phone from caseThe Samsung Galaxy S25 boasts a robust 4,000mAh battery, but daily usage can drain it faster than expected. The Newdery Battery Case offers an additional 8,000mAh of power, providing nearly two full charges, ensuring your phone remains powered even during intensive tasks like gaming or photography without adding excessive bulk.

The case easily slides onto your Galaxy S25 and connects via the USB-C port to deliver power. It maintains NFC and data transfer capabilities even when attached. While it supports wireless charging, fast charging via USB-C ensures quick recharges. Beyond extending battery life, the TPU and PC materials provide significant 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 your phone's battery life with this 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 adapterUpgrading your phone often means your battery case becomes obsolete. The Mophie Juice Pack Connect offers a versatile solution that can work with your current and future devices. Rather than encasing your phone, it attaches a battery pack to it.

With the Juice Pack Connect, you attach a small anchor to your phone or case, then easily slip on the 5,000mAh battery pack when needed. It uses Qi wireless charging, making it compatible with a wide range of smartphones, and can be recharged wirelessly. Additionally, it comes with a stand for convenient viewing of videos or documents.

How to Choose the Best Battery Case

Choosing the right battery case involves more than just selecting the one with the highest capacity. An overly large case can be impractical for everyday carry. The ideal charging case balances battery capacity, size, and price.

If you're only looking for a backup power source to carry in your bag, a portable charger might be a better choice. A battery case designed to fit your phone is only beneficial if you plan to use it regularly. The case should be pocket-friendly and lightweight while still offering protection.

High-capacity battery cases often sacrifice features like quick and wireless charging for more power storage. These features are crucial if you want to keep the case on your phone continuously and enjoy the convenience of simultaneous wireless charging.

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. Modern smartphones have built-in systems 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. Completely draining the battery can actually damage it, reducing its capacity over time.