The Best Battery Cases for Smartphones in 2025

Extend your smartphone's battery life effortlessly with a sleek and convenient battery case. Unlike bulky portable chargers, battery cases offer a streamlined solution, eliminating cable clutter. They provide extra power while offering protection for your phone, often including features like NFC compatibility and port accessibility. Wireless and quick charging capabilities further enhance their convenience. However, not all battery cases are created equal; some add excessive bulk or fail to deliver reliable charging. This guide highlights five top-rated battery cases for popular smartphones.

Looking for a new phone or other accessories? Explore our recommendations for the best phones, Android phones, iPhones, gaming phones, wireless chargers, portable chargers, and screen protectors.

TL;DR – Top Smartphone Battery Cases:

See details at Amazon for each case.

The ideal battery case balances extended battery life, compact design, and robust protection without compromising phone functionality. Avoid overly bulky options that might hinder usability.

1. Mophie Juice Pack Battery Case

Best iPhone 16 Pro Battery Case

This compact and lightweight case for the iPhone 16 Pro provides a significant battery boost (2,800mAh) and excellent drop protection (up to 6ft). Its integrated magnet allows for accessory attachment, although wireless charging isn't supported. While offering less capacity than some competitors, it maintains a slim profile, making it incredibly portable. The case adds minimal bulk and weighs approximately 3.5oz, easily fitting in pockets or bags. It's a top choice for users seeking a balance between extended battery life and portability.

2. ZeroLemon Battery Case

Best iPhone 16 Pro Max Battery Case

For users demanding maximum battery life and rugged protection, the ZeroLemon case is a powerhouse. Its dual 5,000mAh batteries provide approximately 1.5 extra charges, ideal for intensive usage like videography or gaming. Military-grade protection ensures durability, while 18W fast charging minimizes downtime. However, its substantial size and weight (8.5oz) make it less pocket-friendly. Data passthrough and wired headphone support are not available.

3. Mophie Juice Pack Wireless

Best iPhone SE Battery Case

This slim, lightweight case for the iPhone SE (2022) offers a convenient 2,525mAh battery boost and supports Qi wireless charging. Its compact design adds minimal bulk while providing adequate protection. Passthrough technology allows for simultaneous charging and headphone use. While providing a full charge, it may not be sufficient for extremely heavy users.

4. NEWDERY Battery Case

Best Samsung Galaxy S25 Case

The NEWDERY case for the Samsung Galaxy S25 boasts an impressive 8,000mAh battery, providing nearly two full charges. Its compact design, wireless charging support, and USB-C port with data transfer capabilities make it a versatile option. A display shows charging percentages. However, removing the phone from the case may present some difficulty.

5. Mophie Juice Pack Connect

Best Universal Battery Case

The Mophie Juice Pack Connect offers a universal solution, compatible with various smartphones via Qi wireless charging. Its 5,000mAh battery and included stand provide flexibility and convenience. However, attaching the adapter might require some initial adjustment.

How to Choose the Best Battery Case

Selecting a battery case requires considering capacity, size, and features. Prioritize a case that fits your needs and lifestyle. Overly large capacity cases often sacrifice features like quick or wireless charging. Consider whether you need a case for daily use or as a backup power source.

Battery Case FAQ

Are battery cases safe for your phone?

Yes, when used correctly, battery cases won't damage your phone's battery. Smartphones monitor charging, preventing overcharging. Proper ventilation is crucial to prevent overheating.

Should you drain your battery case before charging?

No, fully draining lithium-ion batteries can damage them. Charge your battery case whenever needed to maintain optimal performance.