Category Archives: Power Banks

Power bank size guide: how many mAh you need to charge a phone, tablet, or laptop, why you get fewer real charges than the label suggests, and what to look for.

Chargers and power banks are sold on a jumble of numbers — mAh, watts, “PD”, “GaN” — that sound technical but rarely get explained. Understanding four of them is enough to stop overpaying, stop charging slowly, and stop being surprised when a “10,000 mAh” bank doesn’t fully charge your phone three times. mAh measures a…