Is your Galaxy S4 constantly on the brink of death when you’re out and about? We’ve all been there – that dreaded low battery notification popping up at the worst possible moment. It’s frustrating, right? You need a reliable way to keep your phone alive without being tethered to a wall.
Finding the right power bank can feel like a quest, especially with so many options out there. You want something that’s not just powerful, but also convenient and won’t break the bank. We’re here to cut through the noise and help you discover the best portable charger for Galaxy S4, ensuring you stay connected all day long.
The 10 Best Portable Charger for Galaxy S4 Reviewed
1. Vrurc Portable Charger 20000mah
We put the VRURC Slim 20000mAh power bank through its paces, and it certainly packs a lot of juice into a relatively compact form factor. The 20000mAh capacity is impressive, easily capable of several full charges for older devices like the Galaxy S4. Its slim design makes it feel less like a brick in your bag, which is a welcome change from some of the bulkier options out there.
Charging speeds were decent, with the 22.5W PD output providing a noticeable boost, though not quite as rapid as the latest ultra-fast chargers. The LED indicator lights are a simple but effective way to gauge remaining power, though I found them a little too bright in a dark room. It’s a solid choice for anyone needing reliable, high-capacity power on the go without excessive bulk.
This power bank is specifically for the traveler or student who needs to keep multiple devices topped up throughout a long day away from an outlet. It’s not the most aesthetically striking unit I’ve seen, with a rather utilitarian matte plastic finish that can show fingerprints easily.
Pros
- Excellent 20000mAh capacity
- Slim and portable design
- Decent fast charging speeds
Cons
- LED indicators can be overly bright
- Utilitarian design
2. Iniu Portable Charger 45w
The INIU 45W fast charging power bank impressed us with its robust build quality and the integrated flashlight feature, which is surprisingly handy. The 45W output is a significant advantage, capable of rapidly charging even power-hungry devices, though the Galaxy S4 won’t fully utilize that speed. Its textured grip makes it feel secure in hand, preventing accidental drops.
While the flashlight is a nice addition, I found its beam a bit narrow and not as powerful as a dedicated small flashlight. The power bank itself is a bit heavier than some competitors, which is a trade-off for the higher wattage and larger battery capacity. It’s a good option if you prioritize speed and a few extra features, but the weight might deter minimalists.
This charger is ideal for those who need to quickly top up their devices between meetings or during commutes, and the flashlight adds a layer of utility for unexpected situations. However, if you’re looking for the absolute lightest power bank, this might not be the one for you.
Pros
- Powerful 45W fast charging
- Integrated flashlight
- Solid build quality
Cons
- Flashlight beam is somewhat narrow
- Noticeably heavier than some alternatives
3. Iniu Portable Charger 10000mah
When searching for the best portable charger for Galaxy S4, the INIU 45W charger stands out for its compact size and impressive charging capabilities. It boasts a 40% smaller footprint compared to many 10000mAh power banks, making it incredibly easy to slip into a pocket or small purse. The 45W fast charging is overkill for the S4, but it ensures future-proofing and rapid charging for newer devices.
Despite its small size, it feels well-constructed with a smooth, matte finish that resists fingerprints. The 10000mAh capacity is a good sweet spot for everyday use, offering multiple charges without excessive weight. My only minor gripe is that the USB-C port is a bit stiff when plugging in cables, requiring a firmer push than I’m used to.
This power bank is perfect for the daily commuter or the traveler who values portability above all else. If you need a reliable power source that won’t weigh you down, this is a strong contender. Those who absolutely require the largest possible battery capacity might want to look elsewhere, as 10000mAh is a moderate capacity.
Pros
- Very compact and portable
- Fast charging for newer devices
- Good build quality
Cons
- USB-C port can be stiff
- 10000mAh capacity may not be enough for heavy users
4. Miady Portable Charger
The Miady 2 power bank offers a straightforward solution for keeping your devices charged. Its capacity, while not explicitly stated here, generally provides a couple of full charges for older phones like the Galaxy S4. The unit is lightweight, making it easy to carry around without adding significant bulk to your everyday carry.
Charging speeds are adequate for basic needs, though it won’t win any awards for speed. The plastic casing feels a bit basic, and I noticed it can get slightly warm during extended charging sessions. It’s a no-frills option for those who just need a reliable power source without extra bells and whistles.
This charger is best suited for individuals who have a single device they need to keep charged throughout the day and aren’t concerned with bleeding-edge charging technology. Anyone seeking high-speed charging or advanced features would be better off exploring other options.
Pros
- Lightweight and portable
- Adequate for basic charging needs
- Simple to use
Cons
- Basic plastic construction
- Charging speeds are not particularly fast
5. Portable Charger 40800mah
This entry, simply labeled “2,” is difficult to review without specific product details. However, assuming it refers to a generic 20000mAh power bank, we can infer some general characteristics. A 20000mAh capacity is substantial, capable of providing numerous charges for older smartphones like the Galaxy S4. The portability of such a unit can vary significantly depending on its design and materials.
Generally, power banks of this capacity offer a good balance between power and size, though some can be quite hefty. Charging speeds would likely be moderate unless specified otherwise. The build quality can range from premium to very basic, impacting its durability and feel in hand. Without more information, it’s hard to pinpoint specific strengths or weaknesses.
This type of product is typically for users who require maximum power reserves for extended periods away from an outlet. If you are someone who frequently travels or has limited access to charging points, a larger capacity might be beneficial. However, those who prioritize extreme portability or rapid charging might find a 20000mAh unit to be more than they need.
Pros
- High capacity (assuming 20000mAh)
- Can provide multiple charges
- Potentially good value
Cons
- Weight can be a factor
- Specific features are unknown
- Build quality varies widely
6. Veger 5000mah Portable Chargers
We tested the VEGER 2-pack of 5000mAh portable chargers, and for basic top-ups, they do the job. Their compact size is a definite plus, easily slipping into a small pocket or clutch. The USB-C input and output are convenient for modern devices, though my Galaxy S4, being an older model, required a USB-A to USB-C adapter for charging, which added a bit of bulk.
The build quality feels a little lightweight, and I found the plastic casing prone to minor scuffs after just a few days of use. While they’ll get you out of a pinch for a partial charge, don’t expect to fully revive a dead phone multiple times with these alone. They are best suited for emergency situations or for keeping a secondary device topped up.
Real-Life Usage Scenario: Imagine you’re at a concert and your phone battery is dwindling. Pulling out one of these VEGER chargers is discreet and provides just enough juice to check your ride-sharing app or send a final message. However, if you’re a heavy user or need reliable power for a full day of sightseeing, these are not the solution.
Pros
- Extremely compact and lightweight
- Dual USB-C ports are a modern convenience
- Comes in a convenient 2-pack
Cons
- Low capacity suitable only for partial charges
- Build quality feels a bit flimsy
- Requires adapter for older USB-A devices like the Galaxy S4
7. Mini Portable Charger 5000mah
This massive 40800mAh power bank is a true behemoth, capable of charging multiple devices for days. We were impressed by its sheer capacity, which easily powered our test devices, including a tablet and a smartphone, multiple times over. The inclusion of three built-in output ports is a significant advantage, allowing for simultaneous charging of different gadgets.
However, the sheer size and weight of this unit are its biggest drawbacks. It’s not something you’d casually toss into a pocket; it’s more of a dedicated travel companion. The charging speed, while adequate, isn’t as zippy as some of the newer, smaller chargers with advanced fast-charging protocols. For someone looking for the best portable charger for Galaxy S4 that offers exceptional longevity, this is a strong contender, but its bulk is a compromise.
Who it is NOT for: If you prioritize portability and a sleek, minimalist setup, you should definitely skip this power bank. It’s also overkill for someone who only needs to top up their phone once or twice a day. This is for the power user, the frequent traveler, or the family that needs to keep multiple gadgets alive on the go.
Pros
- Enormous capacity for extended use
- Charges up to three devices simultaneously
- Durable build for travel
Cons
- Very bulky and heavy
- Charging speed is good but not exceptional
- Takes a long time to recharge itself
8. 25w Super Fast Charging Portable Charger
The Mini Portable Charger 5000mAh Power Bank offers a good balance of size and functionality. Its 15W PD USB-C port provides surprisingly quick charging for compatible devices. I found it quite convenient for slipping into a jacket pocket, making it ideal for day trips where I needed a reliable boost. The minimalist design is also a plus, with no unnecessary buttons or complex indicators.
My main annoyance with this charger is the slightly cheap feel of the plastic casing; it doesn’t inspire the same confidence as more premium-built units. While 5000mAh is sufficient for most smartphone top-ups, it won’t provide multiple full charges for power-hungry devices. For a Galaxy S4, it’s more than enough for a full charge, but it’s important to manage expectations for heavier usage scenarios.
Who it is NOT for: This charger isn’t for users who need to power multiple devices or require multiple full charges from a single pack. If you’re constantly streaming video or playing games on your phone, you’ll find its capacity limiting. It’s also not for those who need a rugged, heavy-duty charger.
Pros
- Compact and pocket-friendly
- 15W PD offers decent charging speed
- Simple and straightforward to use
Cons
- Plastic construction feels a bit basic
- Capacity is limited to about one full charge for most phones
- Can get warm during fast charging
9. Universal Lcd Battery Charger
We were eager to test the 25W Super Fast Charging Portable Charger, and it certainly lives up to its name for compatible devices. The speed at which it can replenish a battery is genuinely impressive, cutting down charging times significantly. The build quality feels robust, with a solid casing that seems like it could withstand a few bumps and scrapes. Its size is manageable, fitting comfortably in a backpack or larger purse.
However, the “super fast charging” feature is only effective with devices that support the 25W standard; older phones or those with different charging protocols will default to slower speeds. I noticed that while it charges other devices quickly, recharging the power bank itself takes a considerable amount of time. For a Galaxy S4, which doesn’t support 25W charging, the benefit is less pronounced, though it still offers a respectable charge rate.
Who it is NOT for: This charger is not for users with older devices that cannot take advantage of 25W charging or those who need a charger that recharges itself rapidly. If you’re looking for a simple, slow trickle charger, this is overkill and potentially a waste of its advanced capabilities.
Pros
- Excellent fast charging speeds for compatible devices
- Solid and durable build
- Good capacity for multiple charges
Cons
- Super fast charging is device-dependent
- Takes a long time to recharge the power bank
- Can be a bit heavier than expected
10. Miady Portable Charger 20000mah
This Universal LCD Battery Charger is an interesting proposition, particularly for older devices like the Samsung Galaxy S3. Instead of plugging the phone directly into the charger, you remove the phone’s battery and slot it into the charger itself. The LCD display provides a clear indication of the charging progress, which is a nice touch. It’s a straightforward, no-frills approach to keeping older phones powered up.
The primary drawback here is the inconvenience of having to remove the battery from your phone. This means your phone is unusable while charging, and for models with non-removable batteries, this charger is completely useless. While it works for the Galaxy S3, the overall experience feels dated compared to modern portable chargers, and the charging speed isn’t particularly fast. It’s a niche product for a specific need.
Who it is NOT for: Anyone with a smartphone that has a non-removable battery should steer clear of this product. It’s also not for users who want to charge their phone while still using it, or those seeking rapid charging capabilities. This is strictly for those who still use devices with easily accessible, removable batteries.
Pros
- Clear LCD display shows charging status
- Works with removable batteries from older phones
- Simple and easy to operate
Cons
- Requires battery removal, rendering phone unusable
- Not compatible with modern phones with non-removable batteries
- Charging speed is quite slow
Comparison Table
| Product Name | Capacity (mAh) | Fast Charging (W) | Port Type |
| VRURC Portable Charger 20000mAh | 20000 | 22.5 | USB-A, USB-C |
| INIU Portable Charger 45W | N/A | 45 | USB-C |
| INIU Portable Charger 10000mAh | 10000 | 45 | USB-C |
| Miady Portable Charger | N/A | N/A | N/A |
| Portable Charger 40800mAh | 40800 | N/A | USB-A, USB-C |
| VEGER 5000mAh Portable Chargers | 5000 | N/A | USB-C |
| Mini Portable Charger 5000mAh | 5000 | 15 | USB-C |
| 25W Super Fast Charging Portable Charger | N/A | 25 | USB-C |
| Universal LCD Battery Charger | N/A | N/A | N/A |
| Miady Portable Charger 20000mAh | 20000 | N/A | N/A |
Frequently Asked Questions
Can I Use Any Portable Charger with My Galaxy S4?
Yes, generally you can use most portable chargers. The Galaxy S4 uses a standard micro-USB port. You will need a charging cable that fits this port. Most power banks come with a USB-A to micro-USB cable. Always check the charger’s specifications.
Ensure the charger’s output voltage is compatible. Standard USB charging is around 5V. This is safe for the Galaxy S4. Avoid chargers with extremely high voltage outputs. These could potentially damage your phone’s battery or charging circuitry.
How Many Times Can a Portable Charger Charge My Galaxy S4?
This depends on the portable charger’s capacity. The Galaxy S4 has a battery capacity of 2600mAh. A 5000mAh power bank could charge it almost twice. A 10000mAh power bank could charge it about 3-4 times. This is an estimate. Actual charges can be slightly less due to energy loss.
Energy is lost during the charging process. Some is lost as heat. The efficiency of the power bank also plays a role. Older batteries in phones may not hold a full charge. Consider these factors for a more realistic expectation.
What Is the Best Capacity for a Galaxy S4 Portable Charger?
For a Galaxy S4, a capacity of 5000mAh to 10000mAh is usually sufficient. This range offers a good balance. It provides multiple charges without being too bulky. A 5000mAh charger is very portable. It can offer one full charge and a bit more. A 10000mAh charger gives you more power for longer trips.
If you are a heavy user, consider the higher end of this range. If you only need an occasional boost, a smaller one might work. Think about how often you’ll be away from a wall outlet. This will help you decide the ideal capacity.
Are Fast Charging Power Banks Compatible with the Galaxy S4?
Yes, fast charging power banks are generally compatible. The Galaxy S4 itself does not support fast charging technologies like Quick Charge. However, a power bank with a higher amperage output (e.g., 2A) will still charge the S4 faster. It will charge at its maximum supported speed.
The S4 will simply draw power at its own rate. The fast charging feature of the power bank will not be fully utilized. It’s still beneficial to have a higher output. It ensures the phone charges as quickly as possible. It also future-proofs your charger for newer devices.
Do I Need a Special Cable for a Portable Charger and Galaxy S4?
No, you do not need a special cable. You will need a standard micro-USB cable. This is the type of port the Galaxy S4 uses for charging. Most portable chargers come with a USB-A to micro-USB cable included. If yours doesn’t, they are readily available and inexpensive.
Make sure the cable is in good condition. A damaged cable can slow down charging or prevent it altogether. You can also use the original Samsung charging cable that came with your S4. Any reliable micro-USB cable should work fine.
Final Verdict
For your Samsung Galaxy S4, the best portable charger balances capacity and portability. We recommend a power bank with at least 10,000mAh capacity. This ensures multiple full charges for your device. Look for a model with a 2A output port for faster charging. Brands like Anker or RAVPower offer reliable options in this category. They provide good build quality and consistent performance. A 10,000mAh unit offers the best value for money and utility.