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The Best Battery Cases for Smartphones in 2025

By HannahMar 15,2025

Extend your smartphone's battery life effectively with a portable charger, but many are bulky. A battery case offers a sleek, phone-specific solution, eliminating cable clutter associated with traditional power banks. They add extra juice while protecting your phone, ideally without hindering features like NFC or ports, or adding excessive bulk. Wireless and quick charging capabilities are major pluses, but some cases fall short, becoming too cumbersome or failing to provide a reliable charge. This guide highlights five top-rated battery cases for popular phones.

Looking for a new phone or other accessories? Check out our recommendations for the best phones, top-rated Androids and iPhones, gaming phones, wireless chargers, portable chargers, and screen protectors.

Mophie Juice Pack Battery Case

Top Smartphone Battery Cases:

Mophie Juice Pack Battery Case Mophie Juice Pack Battery Case

ZEROLEMON Battery Case ZEROLEMON Battery Case

Mophie Juice Pack Wireless Mophie Juice Pack Wireless

NEWDERY Battery Case NEWDERY Battery Case

Mophie Juice Pack Connect Mophie Juice Pack Connect

A good battery case boosts your phone's battery life *and* provides protection. It shouldn't interfere with phone features or add excessive bulk. Wireless and quick charging enhance convenience. We've compiled five excellent options for leading smartphones.

1. Mophie Juice Pack Battery Case

Best iPhone 16 Pro Battery Case

Mophie Juice Pack Battery Case Mophie Juice Pack Battery Case

Product Specifications: Capacity: 2,800 mAh; Size: 6.5" x 2.9" x 0.71"; Weight: 3.5 ounces

Pros: Compact and lightweight; Integrated passive magnet for accessories. Cons: Limited battery size.

This case provides a significant boost to the iPhone 16 Pro's battery life (approximately 50%), while remaining surprisingly compact and lightweight. It offers drop protection up to 6 feet and includes a passive magnet for accessory attachment. Note: It doesn't support wireless charging.

2. ZeroLemon Battery Case

Best iPhone 16 Pro Max Battery Case

ZEROLEMON Battery Case ZEROLEMON Battery Case

Product Specifications: Capacity: 10,000 mAh (2 x 5,000 mAh); Size: 6.74" x 3.48" x 0.99"; Weight: 8.5 ounces

Pros: Military-grade protection; Supports 18W fast charging. Cons: No data passthrough.

Offering substantial extra battery life (approximately 1.5 charges), this rugged case boasts military-grade protection and supports 18W fast charging. Its bulkier size is a trade-off for the extended battery capacity and durability. Note: Data passthrough and wired headset use via USB-C are not supported.

3. Mophie Juice Pack Wireless

Best iPhone SE Battery Case

Mophie Juice Pack Wireless Mophie Juice Pack Wireless

Product Specifications: Capacity: 2,525 mAh; Size: 2.81" x 4.14 x 0.66"; Weight: 3.51 ounces

Pros: Slim, lightweight design; Supports Qi wireless charging. Cons: Provides roughly one full phone charge.

This slim, lightweight case provides a full charge for the iPhone SE (2022), offering protection and Qi wireless charging compatibility. Passthrough technology allows use of a Lightning cable or headphones without case removal.

4. NEWDERY Battery Case

Best Samsung Galaxy S25 Case

NEWDERY Battery Case NEWDERY Battery Case

Product Specifications: Capacity: 8,000 mAh; Size: Not listed; Weight: 2.82 ounces

Pros: Displays charging percentages; Supports wireless charging. Cons: Difficult to remove phone from case.

This case provides nearly two full charges for the Samsung Galaxy S25, supporting wireless and fast charging via USB-C. It offers protection and maintains NFC and data transfer capabilities through the USB-C port. Also available for Galaxy S25 Plus and Ultra models.

5. Mophie Juice Pack Connect

Best Universal Battery Case

Mophie Juice Pack Connect Mophie Juice Pack Connect

Product Specifications: Capacity: 5,000 mAh; Size: 2.7" x 4.09" x 0.56"; Weight: 4.4 ounces

Pros: Universal design; Uses Qi wireless charging; Includes a stand. Cons: Slightly confusing adapter attachment.

A universal battery solution, this option attaches to your phone (or case) via an anchor point, offering Qi wireless charging and a built-in stand. Its adaptability makes it suitable for multiple phones.

How to Choose the Best Battery Case

Choosing a battery case involves balancing capacity, size, and price. Consider your needs: If you only need occasional extra power, a portable charger might suffice. Prioritize a case that fits comfortably in your pocket or bag while offering adequate protection. High-capacity cases often sacrifice features like quick or wireless charging.

Battery Case FAQ

Are battery cases safe for your phone?

Yes, when used correctly. The phone draws power directly from the case, switching to the phone's battery when the case is depleted. Smartphones monitor charging, preventing overloads. Overheating is a potential concern if the case lacks adequate ventilation.

Should you drain your battery case before charging?

No. Fully draining lithium-ion batteries can damage them, reducing their lifespan.

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