Anker 737 Power Bank PowerCore 24K: The Ultimate Portable Charging Solution

In an increasingly mobile world, our reliance on electronic devices has grown exponentially. From smartphones and tablets to laptops and smartwatches, staying powered on the go is no longer a luxury but a necessity. The fear of a drained battery in the middle of a workday, a long commute, or an outdoor adventure is real. This is where a robust and reliable power bank becomes your indispensable companion, a pocket-sized powerhouse ready to keep your essential gadgets alive. This article will delve into the world of portable chargers, with a special focus on a market leader, the Anker 737 Power Bank (PowerCore 24K), to help you navigate the options and make an informed decision for your power needs.

What is a Power Bank, and Why Do You Need One?

A power bank, also known as a portable charger or external battery pack, is a compact device designed to store electrical energy and deliver it to your electronic gadgets when a wall outlet isn’t available. Think of it as a reserve fuel tank for your digital life. The core purpose of a power bank is to provide convenience and peace of mind, ensuring your devices remain operational no matter where you are.

The necessity for a power bank stems from various modern scenarios:

• Travel: Long flights, road trips, or international adventures often mean extended periods away from power outlets. A power bank ensures your navigation, entertainment, and communication devices stay charged.
• Work & Study: Remote work, commuting, or busy campus life often requires sustained power for laptops, tablets, and phones. A power bank prevents interruptions during critical tasks.
• Outdoor Activities: Hiking, camping, or exploring where electricity is scarce makes a power bank crucial for GPS devices, cameras, and emergency communication.
• Everyday Convenience: Even for daily errands, a power bank can be a lifesaver, providing a quick top-up for your smartphone and ensuring you never miss an important call or message.

Owning a power bank means freedom from low-battery anxiety, allowing you to focus on what matters without constantly searching for an electrical socket.

Popular Power Bank Types on the Market

The power bank market offers a diverse range of products, catering to every conceivable need. These devices can be broadly categorized by their capacity, charging technology, and brand. Understanding these distinctions is key to choosing the right one.

Classification by Capacity (mAh)

Capacity, measured in milliamp-hours (mAh), indicates how much energy a power bank can store. A higher mAh generally means more charges for your devices, but also typically results in a larger and heavier unit.

• Small Capacity (5,000mAh – 10,000mAh):
  • Pros: Highly portable, lightweight, often pocket-sized. Ideal for daily commutes or a quick top-up.
  • Cons: Limited charges, primarily suitable for smartphones and small accessories.
  • Suitable Users: Those needing 1-2 full smartphone charges, typically for earbuds or smartwatches, or as an emergency backup.
• Medium Capacity (10,000mAh – 20,000mAh):
  • Pros: Good balance of portability and power. Can charge smartphones multiple times or small tablets.
  • Cons: Still may not be enough for demanding devices like laptops for extended periods.
  • Suitable Users: Everyday users, commuters, and travelers who need 2-3 smartphone charges or a partial tablet charge.
• Large Capacity (20,000mAh+):
  • Pros: Ample power for multiple devices, including laptops and tablets. Excellent for extended trips or charging multiple gadgets simultaneously.
  • Cons: Heavier and bulkier, less pocket-friendly, often more expensive.
  • Suitable Users: Power users, professionals, frequent travelers, and anyone needing to charge laptops, multiple phones, or other high-drain devices. The Anker 737 Power Bank (PowerCore 24K) falls into this category, offering a substantial 24,000mAh.

Classification by Charging Technology

Modern power banks incorporate various technologies to deliver power efficiently and quickly.

• Standard Charging (5W-12W): Basic charging speed, suitable for older devices or when speed isn’t a priority.
• Quick Charge (QC): Developed by Qualcomm, this technology provides faster charging for compatible Android smartphones.
• USB-C Power Delivery (PD): A universal fast-charging standard that can deliver significantly higher power (up to 100W, or even 240W with PD 3.1 Extended Power Range) over USB-C cables. It’s essential for rapidly charging laptops, tablets, and many newer smartphones. The Anker 737 Power Bank features Power Delivery 3.1, enabling impressive 140W two-way charging [cite: 1, 3, 4 (search 1); 1, 3 (search 2)].
• Wireless Charging (Qi/MagSafe): Offers convenience by allowing devices to charge by simply placing them on the power bank, eliminating the need for cables. However, the Anker 737 Power Bank (PowerCore 24K) does not support wireless charging [cite: 3, 4 (search 2)].
• Proprietary Technologies: Brands like Anker also develop their own intelligent charging technologies, such as Anker’s GaNPrime, which helps deliver higher power output in a compact form factor while maintaining efficiency and lower temperatures [cite: 4 (search 1); 1 (search 2)]. The Anker 737 integrates these advanced features for optimal performance [cite: 1 (search 2)].

Classification by Brand

While many brands exist, some have established a strong reputation for quality, innovation, and reliability. Anker is widely recognized as a premium brand in the portable charging space [cite: 3 (search 1); 3 (search 3)]. Other popular brands include Xiaomi, Samsung, UGREEN, and Belkin, each offering a range of products with varying features and price points. Anker’s commitment to quality and support is frequently highlighted in reviews [cite: 3 (search 1)].

Anker 737 Power Bank (PowerCore 24K): A Closer Look

The Anker 737 Power Bank, also known as the PowerCore 24K, is a flagship portable charging solution designed for users who demand exceptional power and advanced features on the go [cite: 4 (search 2)]. It combines cutting-edge technology with a robust design, making it a standout choice for professionals, travelers, and tech enthusiasts.

Key Features and Specifications

The Anker 737 boasts a set of specifications that position it at the high end of the power bank market:

• Capacity: 24,000mAh (86.4Wh). This capacity is significant enough to charge an iPhone 13 nearly five times or a MacBook Air (M1) 1.3 times, while remaining within the 100Wh limit for airline carry-on luggage [cite: 2 (search 1); 1 (search 2)].
• Charging Output:
  • Total Output: A formidable 140W max [cite: 1, 3 (search 2)].
  • USB-C Ports (x2): Both USB-C ports can deliver up to 140W when used individually, supporting Power Delivery 3.1 [cite: 3, 4, 5 (search 1); 3 (search 2)]. This enables rapid charging for high-end laptops like the MacBook Pro [cite: 4 (search 1)].
  • USB-A Port (x1): Provides up to 18W, suitable for older accessories or phones [cite: 3 (search 1); 3 (search 2)].
  • Simultaneous Charging: The 737 can charge up to three devices at once, such as a laptop, tablet, and smartphone, intelligently distributing power [cite: 4 (search 1); 1, 2, 3, 4 (search 2)].
• Charging Input: The power bank itself can be recharged at an impressive 140W via one of its USB-C ports [cite: 3, 4, 5 (search 1); 3 (search 2)]. This means it can go from empty to full in approximately 52 minutes with a compatible 140W PD wall charger, or about 1 to 1.5 hours with a 96-100W PD charger [cite: 3, 4 (search 2)].
• Smart Digital Display: A prominent OLED/LCD screen provides real-time, detailed information, including remaining battery percentage, current input and output wattage for each port, estimated time to full recharge, and even battery health metrics [cite: 1, 2, 4, 5 (search 1); 1, 2, 4 (search 2)]. This transparency is highly valued by power users.
• Design and Build: Measuring approximately 155.7 × 54.6 × 49.5mm (6.13 x 2.15 x 1.95 inches) and weighing around 630g (1.4 lbs), the 737 PowerCore 24K is solid and robust [cite: 1, 2 (search 1); 1, 4 (search 2)]. Its matte black finish and rounded edges balance durability with a sleek appearance. While it’s too bulky for a casual pocket carry, it fits comfortably into a backpack or travel bag [cite: 1, 5 (search 1); 4, 5 (search 2)].
• Safety Features: Anker incorporates multiple safety mechanisms, including ActiveShield 2.0, which monitors temperature and protects against over-voltage, over-current, and short-circuiting [cite: 3 (search 2)].
• Trickle Charging Mode: For low-power devices like earbuds or smartwatches, a dedicated trickle charging mode prevents overcharging and damage [cite: 3 (search 2)].

Pros of the Anker 737 Power Bank (PowerCore 24K)

The Anker 737 stands out for several compelling reasons:

• Unrivaled Charging Speed: 140W two-way charging is a game-changer, allowing it to rapidly charge high-power laptops and quickly recharge itself [cite: 1, 4 (search 1); 1, 4 (search 2)].
• High Capacity for Demanding Users: The 24,000mAh capacity provides substantial power for extended use across multiple devices [cite: 2 (search 1); 2 (search 2)].
• Intelligent Monitoring: The vibrant digital display offers crucial real-time data, giving users unprecedented control and transparency over their charging activities [cite: 1, 4 (search 1); 1, 2, 4 (search 2)].
• Versatile Multi-Device Charging: With two 140W USB-C ports and an 18W USB-A port, it can handle a wide array of gadgets simultaneously [cite: 3, 4 (search 1); 1, 3, 4 (search 2)].
• Flight-Safe Design: Its 86.4Wh energy rating is below the 100Wh airline limit, making it a reliable travel companion [cite: 1, 2, 4 (search 2)].
• Premium Build Quality: The device feels sturdy and durable, reflecting Anker’s reputation for high-quality products [cite: 2, 3, 5 (search 1)].

Cons of the Anker 737 Power Bank (PowerCore 24K)

While exceptional, the Anker 737 does have a few drawbacks:

• Size and Weight: At over 600g, it’s notably heavier and bulkier than smaller power banks, making it less ideal for pocket carry [cite: 1, 5 (search 1); 2, 4 (search 2)].
• Premium Price: Its advanced features and high performance come at a higher cost compared to basic models, which might be a barrier for casual users [cite: 1, 4, 5 (search 1); 3, 5 (search 2)].
• No Wireless Charging: Unlike some competitors or other Anker models, the 737 lacks wireless charging capabilities, which could be a consideration for some users [cite: 3 (search 2)].

Comparison of Power Bank Types (General)

To put the Anker 737 into context, here’s a general comparison table of various power bank types based on common characteristics:

Feature	Small Capacity (e.g., 5,000mAh)	Medium Capacity (e.g., 10,000mAh – 15,000mAh)	Large Capacity (e.g., 20,000mAh – 24,000mAh+)	Anker 737 PowerCore 24K (24,000mAh)
Capacity	5,000 – 10,000mAh	10,000 – 15,000mAh	20,000mAh+	24,000mAh (86.4Wh)
Primary Use	Phone top-up, earbuds	Multiple phone charges, small tablet	Laptops, multiple devices, extended trips	Laptops (140W PD 3.1), multiple high-power devices
Max Output	10W – 18W	18W – 45W	60W – 100W+	140W (USB-C), 18W (USB-A)
Input Charging	10W – 18W	18W – 30W	45W – 100W+	140W (USB-C)
Portability	Pocket-friendly, very lightweight	Handbag/small bag, manageable weight	Backpack/travel bag, noticeably heavy	Backpack/travel bag, heavy (630g), compact for its capacity [cite: 1, 5 (search 1)]
Features	Basic charging, few ports	Often includes fast charging (QC/PD), 2-3 ports	Fast charging (PD), multiple ports	140W two-way PD 3.1, GaNPrime, OLED display, 3 ports, trickle charging [cite: 3, 4 (search 1); 1, 2, 3, 4 (search 2)]
Price Range	Low	Mid	High	Premium [cite: 1, 4, 5 (search 1); 3, 5 (search 2)]
Wireless Chg.	Rarely	Some models	Some models	No [cite: 3 (search 2)]
Pros	Highly portable, affordable	Good balance of power/portability	High capacity, versatile	Ultra-fast, high capacity, informative display, laptop charging
Cons	Limited power	Not ideal for high-power laptops	Heavier, more expensive	Heavy, premium price, no wireless charging
Overall Rating	Good for emergencies/light use	Very good for daily use/short trips	Excellent for power users/long trips	Exceptional for power users needing laptop-level charging

Guide to Choosing the Right Power Bank

Selecting the perfect power bank involves a careful assessment of your personal needs and an understanding of key technical specifications.

Determine Your Usage Needs

Before diving into specs, consider how and where you’ll primarily use your power bank:

• What devices do you need to charge? (e.g., smartphone, tablet, laptop, smartwatch, drone). The power requirements vary significantly. A power bank like the Anker 737 is designed for a diverse range, including power-hungry laptops [cite: 4 (search 1)].
• How much capacity do you need? If you just need to top up your phone once a day, 5,000-10,000mAh might suffice. For multiple devices or laptop charging, aim for 20,000mAh or higher [cite: 1, 2, 3 (search 3)]. For example, the 24,000mAh Anker 737 can recharge an iPhone 13 nearly 5 times or an iPad Pro 12.9″ 1.3 times [cite: 2 (search 1)].
• Do you need fast charging? If time is critical, look for power banks with Power Delivery (PD) or Quick Charge (QC) technology. The Anker 737’s 140W PD 3.1 is ideal for rapid charging [cite: 1, 4 (search 1); 1 (search 2)].
• What is your budget? Power banks range from inexpensive basic models to premium, feature-rich devices. Be prepared to invest more for higher capacity and faster charging.
• How important is portability? Small power banks fit in pockets, while larger ones like the Anker 737 are better suited for backpacks [cite: 1, 5 (search 1); 4, 5 (search 2)].

Understand Technical Specifications

Deciphering the jargon can seem daunting, but these terms are crucial:

• Capacity (mAh): As discussed, this is the total energy stored. Remember that real-world usable capacity is typically 60-70% of the stated mAh due to energy conversion losses [cite: 2 (search 2)].
• Wattage (W), Voltage (V), and Amperage (A): Wattage (W = V x A) determines charging speed. Higher wattage means faster charging. Ensure the power bank’s output wattage matches or exceeds your device’s charging requirements [cite: 1, 3 (search 3)]. For example, a laptop might need 60W-100W, which the Anker 737 can easily provide [cite: 4 (search 1)].
• Port Types:
  • USB-A: Standard rectangular port, typically for older devices or slower charging.
  • USB-C: Reversible, versatile port supporting fast charging (PD) and higher power transfer. Many modern devices use USB-C for both input and output. The Anker 737 features two USB-C ports and one USB-A port [cite: 1 (search 2)].
  • Lightning: Apple’s proprietary port, primarily for older iPhones/iPads (though newer models use USB-C).
• Charging Efficiency (%): This indicates how much of the stored energy is actually transferred to your device. Higher efficiency means less wasted power. The Anker 737 shows good efficiency, around 83-90% depending on the output load [cite: 4 (search 1)].
• Safety Features: Look for certifications and built-in protections against overcharging, over-discharging, over-current, over-voltage, and short-circuiting. Anker’s ActiveShield 2.0 is an example of advanced safety measures [cite: 3 (search 2)].

Choose a Reputable Brand

Brand reputation often correlates with product quality, safety, and customer support. Trusted brands like Anker invest in research and development, use high-quality components, and adhere to safety standards [cite: 3 (search 1); 3, 4 (search 3)]. Reading user reviews and checking warranty policies are also excellent ways to gauge reliability. Anker, for instance, typically offers a 2-year warranty on its 7xx series power banks [cite: 5 (search 2)].

Compare Prices

Always compare prices from various retailers. While a lower price can be tempting, be wary of suspiciously cheap products, as they may compromise on quality or safety. Balance cost with the features, capacity, and brand reliability you need. The Anker 737 PowerCore 24K sits at a premium price point, reflecting its advanced capabilities [cite: 1, 5 (search 1); 3, 5 (search 2)].

Top Power Bank (Anker 737 PowerCore 24K)

For those who demand the absolute best in portable power, the Anker 737 Power Bank (PowerCore 24K) frequently earns top recommendations, especially for power users and professionals. It’s often highlighted in “best of” lists for its combination of capacity and speed [cite: 2, 5 (search 2)].

Anker 737 Power Bank (PowerCore 24K)

• Capacity: 24,000mAh
• Technology: Power Delivery 3.1 (140W two-way), GaNPrime
• Output Ports: 2 x USB-C (140W max each), 1 x USB-A (18W max)
• Design: Robust, matte black, smart OLED display, ~630g
• Price: Premium

Detailed Assessment:
The Anker 737 is a powerhouse designed to keep high-drain devices like laptops, tablets, and multiple smartphones charged at impressive speeds [cite: 4 (search 1); 1, 2, 4 (search 2)]. Its standout feature is the 140W two-way Power Delivery 3.1 charging, which not only rapidly charges connected devices but also allows the power bank itself to recharge to full in under an hour with a compatible charger [cite: 3, 4 (search 2)]. The integrated OLED display is a significant advantage, offering real-time data on power flow and battery status, which is invaluable for managing multiple devices [cite: 1, 4 (search 1); 1, 4 (search 2)].

While its 630g weight and relatively large size make it less suitable for a shirt pocket, it’s remarkably compact for its capacity and power output, fitting easily into a backpack [cite: 1, 5 (search 1); 4, 5 (search 2)]. The build quality is excellent, with a durable feel that promises longevity [cite: 2 (search 1)]. For users who rely heavily on their tech for work, travel, or gaming, the Anker 737 justifies its premium price by offering unparalleled performance and reliability. It’s truly a future-proof investment, capable of handling devices with increasingly higher charging demands [cite: 3 (search 1); 4 (search 2)].

> “The Anker 737 PowerCore 24K redefines what a portable charger can be. Its combination of 140W two-way charging, 24,000mAh flight-safe capacity, and OLED monitoring makes it one of the most capable power banks available today.” – Cubed3 Review, on the Anker 737’s innovation [cite: 1 (search 1)]

Ideal User: Professionals, digital nomads, gamers, and frequent travelers who need reliable, high-speed charging for laptops, tablets, and multiple devices simultaneously. If you need serious portable power and are willing to invest in top-tier performance, the Anker 737 is an exceptional choice.

How to Use and Maintain Your Power Bank Correctly

To maximize the performance and lifespan of your power bank, proper usage and maintenance are essential.

Proper Usage

• Use Compatible Cables: Always use high-quality, compatible charging cables. For fast charging, especially with the Anker 737’s 140W output, ensure you use USB-C cables rated for Power Delivery 3.1 to achieve optimal speeds [cite: 3 (search 1)].
• Charge Appropriately: While modern power banks have protection against overcharging, it’s generally good practice to disconnect your device once it’s fully charged. For the power bank itself, recharge it using a charger with sufficient wattage (e.g., a 140W PD charger for the Anker 737) for the fastest replenishment [cite: 3 (search 2)].
• Avoid Extreme Discharge: Try not to let your power bank completely drain to 0% often, as this can reduce its overall lifespan.
• Utilize Trickle Charging: For low-power devices like smartwatches or Bluetooth earbuds, use the trickle charging mode (if available, like on the Anker 737) to prevent over-current and ensure safe charging [cite: 3 (search 2)].

Proper Storage and Care

• Keep it Cool and Dry: Store your power bank in a cool, dry place away from direct sunlight and high humidity. Extreme temperatures can degrade battery performance and safety.
• Avoid Physical Damage: Power banks are generally robust, but dropping them or subjecting them to strong impacts can damage internal components.
• Charge Periodically: If storing for an extended period, charge the power bank to about 50-70% capacity and recharge it every few months to prevent deep discharge.
• Clean Ports: Keep charging ports clean and free of dust or debris to ensure efficient connections.

Important Safety Notes

• Airline Regulations: Be aware of airline regulations regarding power bank capacity. Most airlines permit power banks up to 100Wh (approximately 27,000mAh) in carry-on luggage only, not checked baggage. The Anker 737’s 86.4Wh capacity is well within this limit [cite: 2, 4 (search 2)].
• Genuine Products: Always purchase power banks from reputable brands and authorized sellers to avoid counterfeit products, which can pose safety risks.
• Disposal: When a power bank reaches the end of its life, dispose of it responsibly at an electronic waste recycling facility.

Conclusion

A power bank is an essential tool for navigating our increasingly connected and mobile world. While there’s a vast array of options available, understanding your specific needs—from capacity and charging speed to portability and budget—is paramount. The Anker 737 Power Bank (PowerCore 24K) stands out as a top-tier choice for users who demand exceptional performance, particularly for charging high-power devices like laptops with its groundbreaking 140W two-way charging and informative OLED display.

Although it comes with a premium price tag and a noticeable weight, its ability to keep multiple devices, including the most demanding ones, fully powered makes it an invaluable investment for professionals, travelers, and anyone who can’t afford to run out of battery. By choosing a reputable brand like Anker and following proper usage and maintenance guidelines, you can ensure your portable power solution serves you reliably for years to come. What device are you most eager to keep charged on your next adventure?

Frequently Asked Questions

What is the actual usable capacity of the Anker 737 Power Bank (PowerCore 24K)?

While the Anker 737 Power Bank has a nominal capacity of 24,000mAh, the actual usable capacity for charging devices is typically lower, around 60-70% due to energy conversion losses and voltage differences. This means you can expect to transfer roughly 14,400 to 16,800mAh of effective charge to your devices.

Can the Anker 737 Power Bank charge a MacBook Pro at full speed?

Yes, the Anker 737 Power Bank (PowerCore 24K) supports Power Delivery 3.1 with an output of up to 140W via its USB-C ports. This is powerful enough to charge high-end laptops like the 16-inch MacBook Pro at or near their maximum charging speeds, offering significant power even while the laptop is in active use [cite: 4 (search 1); 5 (search 2)].

Does the Anker 737 Power Bank have wireless charging?

No, the Anker 737 Power Bank (PowerCore 24K) does not feature wireless charging capabilities. It relies solely on its USB-C and USB-A ports for wired input and output charging [cite: 3 (search 2)].

How long does it take to fully recharge the Anker 737 Power Bank?

The Anker 737 Power Bank can be fully recharged very quickly thanks to its 140W Power Delivery 3.1 input. With a compatible 140W USB-C PD wall charger, it can reach full capacity in approximately 52 minutes. If using a 96W or 100W PD charger, the recharging time will be closer to 1 to 1.5 hours [cite: 3, 4 (search 2)].

Is the Anker 737 Power Bank safe to take on an airplane?

Yes, the Anker 737 Power Bank (PowerCore 24K) has a capacity of 24,000mAh, which translates to 86.4Wh. This is below the typical 100Wh limit set by most airlines for carry-on luggage, making it safe and permissible to bring on flights in your carry-on bag [cite: 2, 4 (search 2)].