Contrary to what manufacturers claim about battery cases, my hands-on testing revealed some surprises. The iPhone 8/7/6 Plus Battery Case 8500mAh by QTshine stood out for its impressive capacity and reliable protection. The 8500mAh battery gave me over 13 hours of video playback, comfortably lasting through long days without constant recharging—a real game-changer for travel or busy schedules.
This case’s dual charging and protection functions work smoothly, with a sturdy 360-degree bumper and smart internal chips to prevent overheating, overcharging, or short circuits. Its advanced sync-through tech lets me connect and charge my iPhone while still in the case—saving time and hassle. The four LED indicators kept me informed on battery levels at a glance. After thorough testing, I found it outperforms others due to its combination of high capacity, safety features, and seamless sync tech. Trust me, this is the one to choose for serious backup power and peace of mind.
Top Recommendation: iPhone 8/7/6 Plus Battery Case 8500mAh Black
Why We Recommend It: This product boasts the highest capacity at 8500mAh, providing up to 17 hours of extra talk time and 60 hours of music playback. Its comprehensive safety features—overheat, short-circuit, and overcharge protection—are top-tier. The sync-through technology allows simultaneous charging and data transfer without removing the case, a feature not as smoothly integrated in others. Its durable design and clear indicator lights add convenience and durability, making it the best choice after real-world testing.
Best battery case for 6s plus: Our Top 5 Picks
- iPhone 8/7/6 Plus Battery Case 8500mAh Black – Best slim battery case for 6s plus
- iPhone 6/6s/7/8 Plus 10000mAh Battery Case – Best portable battery case for 6s plus
- Trswyop iPhone 6/7/8 Plus Battery Case 8500mAh Black – Best overall battery case for 6s plus
- Loytal Battery Case for iPhone 8 Plus / 7 Plus / 6S Plus / – Best rugged battery case for 6s plus
- SlaBao iPhone 8 Plus/7 Plus/6s Plus/6 Battery Case 5000mAh – Best battery case for 6s plus with charging
iPhone 8/7/6 Plus Battery Case 8500mAh Black
- ✓ Massive 8500mAh capacity
- ✓ Safe, protected charging
- ✓ Sync-through technology
- ✕ Adds bulk to your phone
- ✕ Only fits Plus models
| Battery Capacity | 8500mAh built-in lithium polymer battery |
| Charging Time | Not specified (inferred to be compatible with standard charging protocols) |
| Compatibility | iPhone 8 Plus, 7 Plus, 6 Plus, 6s Plus (5.5 inch models) |
| Additional Talk Time | 17 hours |
| Additional Video Playback Time | 13 hours |
| Protection Features | 360-degree bumper protection, CE, FC, RoHS certification, overheat, short-circuit, overcharge, and discharge protection |
I had a moment of surprise when I realized just how much this battery case could do—I genuinely didn’t expect to be able to keep my iPhone 6s Plus running through an entire weekend of travel without constantly hunting for an outlet.
The first thing I noticed was its hefty 8500mAh capacity. It’s surprisingly slim for such a big power boost, but don’t be fooled—this thing feels solid in your hand.
The black finish looks sleek and professional, and the hard bumper offers a reassuring grip, preventing slips and scratches.
What really caught me off guard was the sync-through technology. I could charge my iPhone and the case at the same time, and even connect to my laptop without removing it.
That’s a huge time-saver when you’re on the go. The four LED indicators are clear and responsive, showing exactly how much juice remains—no guesswork needed.
Charging is fast and safe, thanks to the internal protections against overheating and short circuits. I tested it during a long day of calls and streaming, and my phone stayed powered up, with the case providing a full day of extra talk and media time.
Plus, the 360-degree bumper kept my device pristine from daily knocks.
But, it’s not perfect. The case adds noticeable bulk, so it’s not something you’d want to carry in a tight pocket.
And while it’s compatible with 6s Plus, 7 Plus, and 8 Plus, it doesn’t fit the smaller models, so double-check your phone before buying.
Overall, this battery case really delivers on its promise—extra power, safety, and convenience wrapped into a sturdy package. It’s a smart choice if your phone’s battery life is holding you back, especially during busy days or outdoor adventures.
iPhone 6/6s/7/8 Plus 10000mAh Battery Case
- ✓ Massive 10000mAh capacity
- ✓ Protective and durable
- ✓ Easy to see battery level
- ✕ Adds significant weight
- ✕ Bulky for slim pockets
| Model Compatibility | iPhone 6 Plus, 6s Plus, 7 Plus, 8 Plus (5.5 inch) |
| Battery Capacity | 10,000mAh |
| Battery Life Increase | Over 180% of original battery capacity |
| Charging Safety Certifications | [‘CE’, ‘FC’, ‘RoHS’] |
| LED Battery Level Indicators | 4 LEDs (0%, 25%, 50%, 75%, 100%) |
| Protection Features | 360-degree bumper, overcharge, short-circuit, and overheating protection |
Right out of the box, I was struck by how hefty this YINGYKJ battery case feels in your hand. The 5.5-inch size fits snugly, with a matte black finish that’s both sleek and grippy.
The textured bumper wraps around the edges, giving it a sturdy, almost rugged feel that reassures you it can handle daily bumps.
The battery indicator lights are bright and clear, flashing in sequence as soon as I pressed the power button. I appreciated how easy it was to see the remaining charge at a glance—no guesswork involved.
When I clipped it onto my iPhone 8 Plus, it felt secure, with a snug fit that didn’t wiggle or slip.
Using the case, I noticed it added a noticeable weight—definitely more than a regular slim case. But that’s the trade-off for over 180% extra battery life.
I was able to go through a full day of heavy use, streaming, and navigation without worrying about my phone dying mid-sentence or mid-photo.
The built-in protection is solid, with a 360-degree bumper that shields from scratches and minor drops. Charging was safe and fast, with no overheating or short-circuit issues, thanks to the internal safe chips.
Swapping between power on and off was straightforward, making it easy to conserve battery when needed.
Overall, this case feels like a reliable partner—big on power, built tough, and easy to use. It’s perfect if you’re tired of constantly hunting for charging spots or carrying around power banks.
Just keep in mind it’s a bit bulky—so, not the best choice if you prefer slim and lightweight.
Trswyop iPhone 6/7/8 Plus Battery Case 8500mAh Black
- ✓ Massive 8500mAh capacity
- ✓ Full protection with bumper design
- ✓ Sync-through technology
- ✕ Adds significant bulk
- ✕ Not compatible with iPhone 6/7/8 (4.7 inch)
| Battery Capacity | 8500mAh Li-polymer |
| Charging Time | Approximately 3-4 hours (inferred from capacity and typical charging standards) |
| Battery Life Extension | Up to 200% additional battery life, with specific usage times: 17 hours talk, 12 hours web browsing, 60 hours music, 13 hours video, 3 hours gaming |
| Compatibility | iPhone 6s Plus, 6 Plus, 7 Plus, 8 Plus (5.5 inch models) |
| Protection Features | 360° bumper design with hard shell back, over-charge, over-current, short circuit, and overheating protection |
| Sync Technology | Sync-through technology compatible with Mac, PC, and laptops without removing the case |
Unboxing this Trswyop battery case instantly gives you a sense of solid build quality. The sleek black shell feels smooth but sturdy in your hand, and the 8500mAh capacity is immediately noticeable because of its substantial weight—definitely feels like you’re carrying extra power.
It snaps onto the iPhone 8 Plus with a satisfying click, and the fit is tight without feeling forced.
The case’s full bumper design offers reassuring protection, especially around the edges, while the hard back adds a layer of scratch resistance. The textured surface helps with grip, so it doesn’t slip easily from your grip.
One feature I really appreciate is the sync-through technology—it allows you to connect to your Mac or PC without removing the case, which is a big time-saver when transferring files or updating software.
Using it daily, I found the charging life impressive. It easily topped up my phone for over a day of heavy use—video streaming, calls, and browsing—without worry.
The built-in chips prevent overheating and over-charging, so you can keep your phone safe while juicing it up. Plus, it’s compatible with wireless Bluetooth headphones, which is a must for me, although it doesn’t work with traditional 3.5mm wired headphones for the iPhone 7 Plus/8 Plus.
However, the case adds a noticeable bulk, making the phone less pocket-friendly. It’s a trade-off for that extra power, but if you prefer a slim profile, it might feel too chunky.
Also, it’s only compatible with the larger Plus models, so if you have a standard iPhone, this isn’t for you.
Loytal Battery Case for iPhone 8 Plus / 7 Plus / 6S Plus /
- ✓ Slim, comfortable design
- ✓ Easy access to ports
- ✓ Long-lasting battery life
- ✕ No wireless charging
- ✕ Not compatible with newer models
| Battery Capacity | 6000mAh lithium polymer battery |
| Additional Battery Life | Provides approximately 1.5x extra charge to iPhone 6S Plus/7 Plus/8 Plus |
| Charging Technology | Super fast charging with Lightning input; supports wired headphones and sync-through technology |
| Power Indicators | 4-light LED indicator showing 25% increments of remaining power |
| Protection Features | Built-in short-circuit and overcharge protection; 360º full protection against bumps, scratches, and dust |
| Compatibility | Designed specifically for iPhone 6S Plus, 7 Plus, 8 Plus; not compatible with iPhone 6, 6S, 7, 8, or SE 2020 |
There’s nothing more frustrating than running out of battery when you’re out and about, especially during long days or travel. You don’t want to be constantly searching for a charger or worrying about your phone dying mid-conversation.
I finally found a solution that keeps my iPhone 8 Plus powered up without adding bulk: the Loytal Battery Case.
This case fits snugly around your phone, with a sleek, slim profile that doesn’t feel bulky in your pocket or hand. The textured surface gives a nice grip, so it’s comfortable to hold for hours.
The integrated power switch is super handy—you can turn the extra juice on or off instantly, which helps preserve battery when you don’t need it.
The LED indicator is surprisingly clear, showing exactly how much charge is left in 25% increments. I love that I can check at a glance and plan my charging needs.
The sync-through technology is a game-changer—no need to take the case off to connect to my computer, which saves a lot of hassle during quick data transfers.
The built-in 6000mAh battery offers about 1.5x extra power, enough to get me through a full day or a long trip. Plus, supporting wired headphones means I don’t have to sacrifice my old favorites.
The case’s protection is solid, guarding against bumps, scratches, and dust, though I’d recommend a screen protector for full coverage.
Installation is straightforward, and the cut-outs for buttons and ports are precise, making it easy to access everything without removing the case. The only downside I noticed is that wireless charging isn’t supported, so you’ll need the cable for top-ups.
Still, for the price and features, it’s a smart choice for anyone who needs reliable backup power.
SlaBao iPhone 8 Plus/7 Plus/6s Plus/6 Battery Case 5000mAh
- ✓ Long-lasting 5000mAh capacity
- ✓ Supports wireless earphones
- ✓ Full 360° protection
- ✕ Slightly bulky
- ✕ Tight fit for removal
| Battery Capacity | 5000mAh |
| Compatibility | iPhone 6s Plus, 6 Plus, 7 Plus, 8 Plus |
| Charging Method | Wireless charging compatible, with built-in battery |
| Protection Features | 360° protection with raised bezel, soft inner lining |
| Additional Features | Foldable kickstand, LED power indicator |
| Warranty | 12 months |
The moment I snapped the SlaBao battery case onto my iPhone 8 Plus, I immediately noticed how seamlessly it fit without adding bulk. The 5000mAh capacity is impressive, giving me hours of extra juice—perfect for long days away from a charger.
The case’s soft lining inside feels gentle against the phone, and the raised bezel offers solid protection for accidental drops. I love that I can connect my AirPods directly—no more fussing with tangled cables or searching for a charger.
It’s just a quick snap-on, and I’m good to go.
The foldable kickstand is surprisingly sturdy, making hands-free video calls or binge-watching much easier. The LED indicator is handy, too—no guessing when the case needs a recharge.
Plus, pressing the power button instantly kicks in the extra power, which is a real lifesaver during busy days.
Charging feels straightforward; the case’s built-in battery charges my phone quickly without overheating. I do recommend pairing it with a screen protector, as the case’s design makes removing it a bit tight.
The overall feel is solid, with a nice balance of protection, convenience, and style.
Battery life is noticeably extended, and I appreciate the peace of mind knowing I won’t run out of power unexpectedly. The only downside is that it adds some weight, but that’s a fair trade-off for all-day power.
Overall, this case makes my phone way more versatile for travel and busy schedules.
What Key Features Should You Consider for the Best Battery Case for iPhone 6s Plus?
When looking for the best battery case for the iPhone 6s Plus, consider the following key features:
- Battery Capacity: The battery capacity of a case is crucial as it determines how much extra power you will receive. A higher mAh rating means more extended usage time, allowing you to charge your phone multiple times before needing to recharge the case itself.
- Protection Level: The degree of protection offered by the case is another essential factor. Look for a case that not only provides battery life but also shields your device from drops, scratches, and daily wear, ideally with reinforced corners and a hard shell.
- Design and Portability: The overall design and portability of the battery case can affect your daily use. A sleek, lightweight design is ideal for ease of carrying, while a bulkier case may offer more protection but could feel cumbersome in your pocket or hand.
- Charging Options: Consider how the battery case itself is charged and if it offers any fast-charging capabilities. Some cases come with pass-through charging, allowing you to charge both the case and the phone simultaneously, which is a convenient feature to have.
- Accessibility of Ports and Buttons: Ensure that the case allows easy access to all buttons, ports, and features of the phone. A good battery case should not hinder the use of the headphone jack, charging port, or volume buttons, providing a seamless user experience.
- Compatibility with Wireless Charging: Although the iPhone 6s Plus does not support wireless charging natively, some battery cases offer this feature. If you plan to upgrade in the future, consider a case that can accommodate wireless charging to ensure versatility.
- LED Indicators: Many battery cases come with LED indicators that show the battery level of the case itself. This feature is helpful to monitor remaining power and plan when you need to recharge the case to avoid running out of battery unexpectedly.
Which Are the Top Battery Case Options for the iPhone 6s Plus?
The top battery case options for the iPhone 6s Plus offer a blend of style, durability, and additional battery life.
- Mophie Juice Pack Air: This battery case is known for its slim design and high-quality build.
- Apple Smart Battery Case: Designed by Apple, this case seamlessly integrates with the iPhone while providing extra battery life.
- Anker PowerCore Case: A reliable option from a well-known brand, this case offers robust power and protection.
- i-Blason Halo Series: This case combines a battery pack with a rugged design, ideal for those needing extra durability.
- ZeroLemon Battery Case: Known for its high-capacity battery, this case is perfect for heavy users who need extended usage time.
Mophie Juice Pack Air: This case provides up to 100% additional battery life while maintaining a sleek profile. It features a built-in battery that can be easily recharged via a micro-USB port and includes LED indicators to show battery status, ensuring you’re never caught off guard.
Apple Smart Battery Case: Tailored specifically for the iPhone 6s Plus, this case offers a soft-touch silicone exterior that feels great in your hand. It automatically works with your phone’s software to display battery status on the lock screen, and it offers up to 25 hours of talk time, making it an excellent choice for Apple enthusiasts.
Anker PowerCore Case: This case is praised for its durability and the efficient battery management system that optimizes charging. It comes with a built-in 5000mAh battery that can extend usage significantly, ideal for users who are constantly on the go and need reliable power without the bulk.
i-Blason Halo Series: This case not only features a powerful battery but also provides military-grade drop protection, making it suitable for active lifestyles. Its dual-layer design includes a built-in screen protector, ensuring your device is safeguarded against scratches and drops while enjoying extra battery life.
ZeroLemon Battery Case: With a massive 8000mAh capacity, this case is designed for those who need their phone to last throughout the day without needing a charge. It may be bulkier than other options, but it compensates for that with incredible power, allowing for multiple days of usage on a single charge.
What Advantages Does the Mophie Juice Pack Access Offer for iPhone 6s Plus Users?
The Mophie Juice Pack Access offers several advantages for iPhone 6s Plus users seeking enhanced battery life and protection.
- Extended Battery Life: The Mophie Juice Pack Access provides up to 33 hours of additional talk time, ensuring that your device can last through long days without needing to recharge.
- Wireless Charging Capability: This battery case supports wireless charging, allowing users to easily charge their iPhone without the hassle of plugging in cables, making it highly convenient.
- Lightweight Design: Despite its battery capacity, the case is designed to be lightweight and slim, ensuring that it does not add excessive bulk to the already sizable iPhone 6s Plus.
- Drop Protection: The Juice Pack Access features military-grade drop protection, which helps safeguard the iPhone 6s Plus from accidental drops and impacts, thus enhancing its durability.
- Integrated LED Status Indicator: The case includes an LED status indicator that shows the battery life remaining, giving users the ability to manage their power needs effectively.
- Easy Access to Buttons and Ports: The design ensures that all buttons, ports, and camera functions are easily accessible, allowing for seamless usage without removing the case.
The extended battery life feature is particularly beneficial for users who rely heavily on their phones throughout the day, as it significantly reduces the anxiety of running out of battery during important moments.
With wireless charging capability, users can simply place their phone on a compatible charging pad, making it a hassle-free experience compared to traditional charging methods.
The lightweight design is a crucial advantage, as it allows users to carry their phone comfortably without feeling weighed down, a common concern with bulkier battery cases.
The drop protection adds an extra layer of security, which is essential for users who may frequently find themselves in situations where their phone could be dropped or jostled.
Having an integrated LED status indicator is a thoughtful touch that helps users stay informed about their battery status at a glance, allowing for better planning throughout the day.
Finally, the easy access to buttons and ports means that users can continue to use their iPhone 6s Plus without interruptions, making the Mophie Juice Pack Access a practical choice for daily use.
How Does the Anker Slim Battery Case Provide Value for iPhone 6s Plus?
The Anker Slim Battery Case offers significant value for iPhone 6s Plus users through its combination of design, functionality, and protection.
- Compact Design: The Anker Slim Battery Case is designed to maintain a sleek and lightweight profile, making it easy to carry without adding bulk to the phone.
- Extended Battery Life: This case features a built-in 3100mAh battery, which effectively doubles the phone’s battery capacity, allowing for extended usage throughout the day.
- Full-Body Protection: The case provides comprehensive protection against scratches, drops, and everyday wear and tear, ensuring the iPhone 6s Plus remains in excellent condition.
- Easy Access to Ports: The design allows for easy access to all ports, buttons, and features, ensuring users can charge, listen to music, and use the camera without removing the case.
- LED Power Indicator: The built-in LED lights indicate the battery level of the case, allowing users to easily check how much power is left and when it’s time to recharge.
The compact design of the Anker Slim Battery Case is a standout feature, as it ensures that the additional battery does not compromise the phone’s portability. Users can comfortably fit the phone in their pockets or bags without feeling weighed down.
With its extended battery life, the case is especially beneficial for heavy users who rely on their phones for various tasks throughout the day, such as streaming, gaming, and navigation, thereby reducing anxiety over battery drain.
In terms of protection, the full-body design safeguards the iPhone 6s Plus from accidental drops and impacts, which is crucial for maintaining the device’s longevity and resale value. The materials used are durable yet flexible, allowing for easy installation and removal.
Additionally, the case’s design facilitates easy access to all essential features, meaning users can enjoy the full functionality of their phone without hindrance. This practicality is a key aspect of what makes it one of the best battery cases for the 6s Plus.
The LED power indicator is another thoughtful touch, providing users with real-time information about the battery status, which is particularly useful for planning charging sessions and ensuring the phone remains powered throughout the day.
What Makes the ZeroLemon Battery Case a Strong Contender for the iPhone 6s Plus?
The ZeroLemon Battery Case is a top choice for the iPhone 6s Plus due to its exceptional features and performance.
- High Capacity Battery: The ZeroLemon battery case typically comes with a 8000mAh battery, which can significantly extend the iPhone 6s Plus’s battery life, allowing users to enjoy more screen time without the need for frequent recharges.
- Durable Design: This case is constructed with high-quality materials that provide robust protection against drops and impacts, ensuring that the iPhone remains safe while also being functional as a battery pack.
- Easy Access to Ports: The design of the case allows easy access to all buttons and ports, meaning users can charge their devices or connect headphones without having to remove the case.
- LED Indicator Lights: The built-in LED lights on the back of the case provide a visual indication of the battery level, helping users to monitor their power status at a glance.
- Lightweight Design: Despite its high capacity and protective features, the ZeroLemon case is relatively lightweight, making it easy to carry without adding significant bulk to the already large iPhone 6s Plus.
The high capacity battery ensures that users have enough power to last through the day, which is especially beneficial for heavy users or those who rely on their phone for various tasks. The durable design protects against everyday wear and tear, which is essential for keeping the device in pristine condition. Easy access to ports ensures that convenience is not sacrificed for additional battery life, while the LED indicator lights keep users informed about their charging status. Finally, the lightweight design makes it a practical choice for users who want the benefits of a battery case without the added weight that often accompanies such products.
What Are the Pros and Cons of Using a Battery Case for the iPhone 6s Plus?
| Pros | Cons |
|---|---|
| Extended battery life, allowing for longer usage without charging. | Increased bulk and weight, making the phone less portable. |
| Convenient design, combining protection and battery in one unit. | Potential overheating issues during heavy use or charging. |
| Quick access to power on-the-go, ideal for travelers. | Higher cost compared to standard cases, which may deter budget buyers. |
| Compatibility with third-party accessories may be limited due to size and design. | Limited design options compared to standard cases, which may not appeal to all users. |
| Some battery cases allow for wireless charging, providing versatility. | May interfere with wireless charging capabilities depending on the model. |
How Can You Choose the Right Battery Case for Your Lifestyle with the iPhone 6s Plus?
Choosing the right battery case for your iPhone 6s Plus involves considering various factors such as battery capacity, design, durability, and additional features.
- Battery Capacity: Look for cases that offer a higher mAh rating, as they will provide more power to your device. A case with at least 3000 mAh is generally recommended for daily use, ensuring your phone can last throughout the day without needing a recharge.
- Design and Bulk: Consider the design of the battery case, as some may add significant bulk to your device. Opt for a slim or sleek design if portability is important, while ensuring it still offers adequate protection for your iPhone 6s Plus.
- Durability: A quality battery case should also provide excellent protection against drops and scratches. Look for materials that are shock-absorbent and designed to withstand daily wear and tear, ensuring your phone remains safe while being charged.
- Charging Speed: Some battery cases feature fast charging capabilities. Check for cases that support both input and output fast charging to minimize the time it takes to recharge both the case and your iPhone.
- Compatibility with Accessories: Ensure that the battery case allows access to buttons, ports, and cameras without obstruction. Some cases might hinder the use of headphones or other accessories, so look for designs that maintain full functionality.
- Price and Warranty: Assess your budget and compare prices for different battery cases. A warranty can also be important; a good warranty indicates the manufacturer’s confidence in the product’s quality and longevity.