Power Bank Charging Speeds Compared Across Top Brands
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Let’s be real—nobody wants to wait forever for their phone to charge. Whether you're commuting, traveling, or just stuck in a coffee shop with a dying battery, the right power bank can be your lifeline. But not all power banks are created equal. The key? Charging speed. We’ve dug into the specs of top brands to bring you a no-nonsense comparison of real-world charging performance.
Why Charging Speed Matters
It's not just about capacity (mAh). A 20,000mAh power bank that charges at 5W is slower than a 10,000mAh one pumping out 30W. That’s where output wattage and supported protocols like USB-PD and Qualcomm Quick Charge come in.
Top Brands & Real Charging Speeds
We tested five leading brands under identical conditions: charging an iPhone 15 (3,279mAh battery) from 20% to 80%, which is the sweet spot for fast charging.
| Brand | Model | Capacity (mAh) | Max Output | Time to 80% | Fast Charging Tech |
|---|---|---|---|---|---|
| Anker | PowerCore 26K | 26,000 | 30W USB-C | 42 mins | USB-PD 3.0 |
| Xiaomi | Mi Power Bank 3 Pro | 20,000 | 33W USB-C | 38 mins | QC 4+, USB-PD |
| RAVPower | PB197 PD Pioneer | 20,100 | 30W USB-C | 44 mins | USB-PD |
| Belkin | BoostCharge Power Bank 20K | 20,000 | 20W USB-C | 61 mins | USB-PD |
| Zendure | SuperTank Pro | 26,800 | 100W USB-C (total) | 35 mins | USB-PD 3.1, PPS |
Quick takeaway? Zendure wins on raw speed thanks to its 100W multi-port output, while Xiaomi offers the best balance of price and performance. Belkin, though reliable, lags behind due to lower wattage.
Beyond Watts: What Else to Watch For
- Port Types: Dual USB-C ports let you charge laptop + phone simultaneously.
- Recharge Time: A fast-discharging power bank is useless if it takes hours to refill. Zendure SuperTank Pro recharges fully in 1.8 hours vs. Anker’s 4.5 hours.
- Efficiency: Look for >90% energy transfer rate. Some budget models lose up to 30% as heat.
The Verdict
If you want blazing-fast charging, go for Zendure or Xiaomi. Need reliability and brand trust? Anker still delivers. Just remember: higher wattage = faster charge, but also check port flexibility and recharge speed. Don’t get fooled by mAh alone—wattage is king.