Product & Brand Comparisons

See how slim power banks underdeliver: lab tests reveal mAh vs Wh reality, thickness-driven throttling, and buying criteria for reliable PD performance.

Learn how PD, QC, and PPS actually negotiate, why e-marked cables matter, and how to match your device and power bank to eliminate slow charging.

Choose a travel power bank by verified PD/PPS performance, not mAh - match outputs, Wh/kg, and thermal limits to your devices and trips, plus airline Wh limits.

Cut through inflated mAh claims with real-world testing of delivered watt-hours, sustained output, and warranty strength to see which sub-$20 banks are worth it - INIU’s 10k leads for stable fast charging. Learn a quick mAh-to-Wh check to spot underperformers before you buy.