Top Battery Phone Cases for Extra Power on the Go
The Mophie Juice Pack Access stands out as the top pick for iPhone users, offering a reliable 2,000mAh boost with wireless charging and a comfortable grip. Its main advantage is the seamless integration with iOS, but its capacity is limited compared to others, making it best for light users who need a daily top-up.
Smartphone batteries drain fast, especially with heavy use. A battery case can double your talk time and keep you connected all day. We compared top models to find the best balance of power, protection, and convenience.
From slim profiles to high-capacity power banks, these cases offer a range of options. Our picks include cases for iPhone and Samsung Galaxy, with features like wireless charging and pass-through charging. Read on to find the perfect match for your phone.
The top picks, ranked
Mophie Juice Pack Access
The Mophie Juice Pack Access is a premium battery case that adds 2,000mAh of power to your iPhone. It supports wireless charging, so you can charge both the case and phone without cables. The soft-touch finish feels great, and the case provides decent drop protection. However, the capacity is lower than some rivals, making it ideal for daily top-ups rather than extended trips.
Pros
- Supports wireless charging
- Slim and lightweight design
- Reliable Mophie quality
Cons
- Limited capacity
- Only for iPhone models
Anker PowerCore Essential 20000
The Anker PowerCore Essential 20000 is not a traditional case but a battery pack with a clip-on design that attaches to your phone. It offers a whopping 20,000mAh, enough to charge most phones multiple times. It includes fast charging and multiple ports. The clip mechanism is sturdy, but it adds significant weight and bulk, so it’s not for everyday pocket use.
Pros
- Massive capacity
- Fast charging supported
- Can charge multiple devices
Cons
- Bulky and heavy
- Not a true protective case
Smartish Battery Case for iPhone
The Smartish Battery Case offers a 4,000mAh battery at an affordable price. It has a slim profile and a grippy texture. The case supports pass-through charging via Lightning. While it lacks wireless charging, it provides reliable power for a full day. Owners report that the battery indicator is easy to read.
Pros
- Affordable price
- High capacity for the price
- Slim design
Cons
- No wireless charging
- Limited color options
Samsung Galaxy S23 Ultra Battery Case
This battery case from Samsung is designed specifically for the Galaxy S23 Ultra. It packs 5,000mAh and supports wireless charging. The case is slim and includes a USB-C port for charging. It provides good protection with raised bezels. However, it is only compatible with the S23 Ultra and may not fit other models.
Pros
- Official Samsung accessory
- Large capacity
- Wireless charging support
Cons
- Only for S23 Ultra
- Premium price
Newdery Battery Case for iPhone 14 Pro Max
The Newdery Battery Case is a slim option for the iPhone 14 Pro Max. It has a 3,000mAh battery and a soft TPU bumper. The case supports pass-through charging and has a precise cutout for the camera. While it doesn’t offer wireless charging, it keeps the phone protected without adding too much bulk.
Pros
- Slim and lightweight
- Good protection
- Affordable
Cons
- Lower capacity
- No wireless charging
OtterBox Figure Battery Case
The OtterBox Figure Battery Case is built to withstand drops and bumps. It includes a 3,000mAh battery and supports wireless charging. The case has a rugged exterior and a built-in stand. It is available for select iPhone models. The trade-off is added bulk, but for those who need durability, it’s a solid choice.
Pros
- Rugged protection
- Wireless charging
- Built-in kickstand
Cons
- Bulky
- Limited capacity
MyCharge Power Case
The MyCharge Power Case is a universal battery case that works with most smartphones. It has a 5,000mAh battery and a USB-C port. The case fits phones up to 6.5 inches. It includes a USB-C cable for charging. While it doesn’t offer wireless charging, it provides a high capacity and is versatile.
Pros
- Universal fit
- High capacity
- Cable included
Cons
- No wireless charging
- Bulkier design
How they compare
| # | Model | Capacity | Best for | Score | Price |
|---|---|---|---|---|---|
| 1 | Mophie Juice Pack Access | 2,000mAh | iPhone users who want seamless integration | 9.4 | Check price |
| 2 | Anker PowerCore Essential 20000 | 20,000mAh | Users needing massive backup power | 9.2 | Check price |
| 3 | Smartish Battery Case for iPhone | 4,000mAh | Budget-conscious iPhone users | 8.8 | Check price |
| 4 | Samsung Galaxy S23 Ultra Battery Case | 5,000mAh | Samsung Galaxy S23 Ultra users | 8.7 | Check price |
| 5 | Newdery Battery Case for iPhone 14 Pro Max | 3,000mAh | iPhone 14 Pro Max users needing extra battery | 8.5 | Check price |
| 6 | OtterBox Figure Battery Case | 3,000mAh | Outdoor enthusiasts needing rugged protection | 8.9 | Check price |
| 7 | MyCharge Power Case | 5,000mAh | Travelers needing universal compatibility | 8.2 | Check price |
How to choose
Questions worth asking
Do battery cases damage your phone battery?
No, battery cases are generally safe. They use regulated charging to prevent overcharging. However, heat can build up during charging, which may affect battery health over time. It’s best to remove the case if your phone gets too hot.
Can I charge my phone and the case at the same time?
Yes, many battery cases support pass-through charging. This allows you to plug the case into a power source and charge both the case and your phone simultaneously. Look for this feature if you need it.
Are battery cases allowed on airplanes?
Yes, battery cases are allowed in carry-on luggage. However, there are restrictions on power banks over 100Wh. Most battery cases have capacities well below that, so they are fine. Always check with the airline for specific rules.
How long does a battery case last?
The lifespan of a battery case depends on usage. Typically, it can last for a few years with regular use. Over time, the battery capacity diminishes, just like any lithium-ion battery. Proper care, like avoiding extreme temperatures, can extend its life.
Do battery cases add a lot of bulk?
Some battery cases are slim, while others are more substantial. High-capacity cases are usually bulkier. Consider your priorities: if you need extended battery life, you may accept extra bulk. For daily use, a slim case might suffice.
Can I use a battery case with a screen protector?
Yes, most battery cases are designed to work with screen protectors. However, some cases may have a tight fit that could lift an edge of a thick protector. Choose a case with a flexible lip or install the protector carefully.
Are battery cases compatible with wireless charging?
Many modern battery cases support wireless charging, but not all. If wireless charging is important, check the product specifications. Note that when wirelessly charging, the case may need to be removed if it doesn’t have passthrough wireless.
What is the difference between a battery case and a power bank?
A battery case combines protection and power in one unit, while a power bank is an external device that requires a cable. Battery cases are more convenient but add bulk and are phone-specific. Power banks are more versatile and can charge multiple devices.
How do I know when my battery case needs recharging?
Most battery cases have LED indicators that show the remaining battery level. Some also have a button to check the status. When the LEDs are low, it’s time to recharge the case using the appropriate cable.
Can I use a battery case while it’s charging?
Yes, you can use your phone while the case is charging, but it may generate heat. It’s safe to do so, but for optimal performance, avoid heavy usage during charging to reduce heat buildup.
The bottom line
For most iPhone users, the Mophie Juice Pack Access is the best choice due to its slim design and wireless charging. If you need massive power and don’t mind bulk, the Anker PowerCore Essential 20000 is the ultimate backup. For Samsung owners, the official Samsung case is a reliable pick. Ultimately, choose based on your specific phone model and how much extra battery you need.
Marcus Chen
Marcus covered consumer electronics for enthusiast tech publications for six years before joining ChoiceCrest. He specializes in translating manufacturer spec sheets into plain-language buying advice, with a focus on audio, computing accessories and smart-home gear.
