A power bank is an essential tool for keeping your devices running in a busy lifestyle. But when it comes to buying one, the question most people face is simple: how much capacity, measured in milliamp hours (mAh), is enough? The right choice depends on your devices, your habits, and how often you need to stay unplugged. From compact everyday chargers to high-capacity travel companions, choosing the right size can make all the difference.
Understand How Much Capacity You Need
When selecting a power bank, the mAh rating determines how many times it can recharge your devices. Let’s break down the key considerations that guide your decision.
For Daily Smartphone Users (5,000–10,000mAh)
If your primary concern is topping up a phone during the day, a compact portable charger of 5,000–10,000mAh is ideal. A 10,000mAh option, like the Anker MagGo Power Bank, typically recharges most flagship smartphones 1.5 to 2 times. These pocket-sized models are lightweight, travel-friendly, and perfect for commuters or students who need a reliable backup charge without carrying bulk.
For Multi-Device Users (15,000–20,000mAh)
Those juggling more than one device, such as a smartphone and wireless earbuds, or a phone and a tablet, should consider 15,000–20,000mAh. This range strikes a balance between portability and performance. A 20,000mAh model often powers a phone four times or a tablet 1.5 times. It’s the sweet spot for frequent travelers or professionals who don’t want to worry about running out of juice during long meetings or trips.
For Laptops and Heavy-Duty Use (25,000–30,000mAh)
Laptops and gaming handhelds require significantly more power. A 25,000–30,000mAh unit, like the Anker Prime Power Bank (27K, 250W), offers the output needed for USB-C laptops and high-performance devices. With up to 250W total output and multiple ports, it can recharge a MacBook Pro to 50% in under half an hour while still having enough capacity left for other devices. For digital nomads or content creators, this category ensures uninterrupted productivity.
Air Travel Considerations (Under 100Wh)
Capacity is not just about convenience, but also about compliance. Airlines limit lithium battery packs in carry-on luggage to under 100Wh (roughly 27,000mAh at 3.7V). High-capacity Anker models, such as the 27,650mAh Prime Power Bank, are carefully designed to meet TSA regulations, giving you maximum power without the worry of restrictions. If you fly often, this is the maximum safe range you should target.
Occasional Users and Emergency Backups (5,000mAh or less)
Not everyone needs a massive power bank. If your use case is emergency backup only—say, to keep your phone alive until you get home—a small 5,000mAh model is sufficient. It may only provide one full phone charge, but its slim design makes it easy to carry in a purse, pocket, or even attach to a keychain-style charger.
Matching mAh to Your Lifestyle
Ultimately, the right mAh capacity aligns with your lifestyle. Casual users can save money and space by choosing lower capacity, while power users or frequent travelers should invest in larger models with higher wattage. Anker’s wide range ensures there’s a fit for everyone, from compact wireless chargers to powerhouse laptop-ready models.
Conclusion
So, the right mAh isn’t a one-size-fits-all answer. It depends on your devices and your daily habits. For light users, 5,000–10,000mAh will cover daily needs, while multitaskers may prefer 15,000–20,000mAh. Professionals and travelers requiring laptop charging should look for 25,000–27,000mAh options that remain airline-compliant. With trusted brands like Anker offering models across these ranges, finding the right balance of portability, power, and safety is simpler than ever. The key is to match your charger to your lifestyle, not just your phone.