Home News The Best Battery Cases for Smartphones in 2025

The Best Battery Cases for Smartphones in 2025

by Lucy Mar 15,2025

Extend your smartphone's battery life effortlessly with a high-quality portable charger. While many portable chargers can be bulky, a battery case offers a sleek, integrated solution, eliminating cable clutter. A good battery case seamlessly adds extra power while protecting your phone, without compromising features like NFC or ports, or adding excessive bulk. Wireless and quick charging capabilities further enhance convenience.

However, not all battery cases are created equal; some add too much bulk or fail to deliver reliable charging. To help you navigate this, we've curated five top-rated battery cases for popular smartphones.

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

Mophie Juice Pack Battery Case

Mophie Juice Pack Battery Case

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ZEROLEMON Battery Case

ZEROLEMON Battery Case

See it at Amazon

Mophie Juice Pack Wireless

Mophie Juice Pack Wireless

See it at Amazon

NEWDERY Battery Case

NEWDERY Battery Case

See it at Amazon

Mophie Juice Pack Connect

Mophie Juice Pack Connect

See it at Amazon

The ideal battery case balances extra power, size, and protection, without sacrificing phone functionality. We've considered these factors in our selection.

1. Mophie Juice Pack Battery Case

Best iPhone 16 Pro Battery Case

Mophie Juice Pack Battery Case

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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 battery boost to the iPhone 16 Pro (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 does not support wireless charging.

2. ZeroLemon Battery Case

Best iPhone 16 Pro Max Battery Case

ZEROLEMON Battery Case

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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 robust protection and a massive 10,000mAh battery (providing approximately 1.5 extra charges), this case is bulkier but ideal for heavy users. It features 18W fast charging but lacks data passthrough and wired headset support.

3. Mophie Juice Pack Wireless

Best iPhone SE Battery Case

Mophie Juice Pack Wireless

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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 approximately one full phone charge.

This slim case provides a full charge for the iPhone SE (2022), offering protection and Qi wireless charging capabilities. Passthrough technology allows for lightning cable and headphone use.

4. NEWDERY Battery Case

Best Samsung Galaxy S25 Case

NEWDERY Battery Case

See it at Amazon

Product Specifications:

  • Capacity: 8,000 mAh
  • Size: Not listed
  • Weight: 2.82 ounces

Pros: Charging percentage display; supports wireless charging.

Cons: Difficult to remove phone from case.

This case provides nearly two full charges for the Samsung Galaxy S25, offering wireless and fast charging options. It 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

See it at Amazon

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 solution, this battery pack uses a small anchor point for attachment and offers Qi wireless charging. It also includes a built-in stand.

Choosing the Right Battery Case

Selecting a battery case involves finding the right balance between capacity, size, and price. Consider your needs and lifestyle to determine the optimal choice. A high-capacity case might be unnecessary if you rarely need extra power.

Battery Case FAQ

Are battery cases safe for your phone? Yes, when used correctly. Smartphones monitor charging to prevent overloading. Proper ventilation is key to avoid overheating.

Should you drain your battery case before charging? No, fully draining lithium-ion batteries can damage them, reducing their lifespan.