Power bank buying guide & the specs that matter and the ones manufacturers inflate
The headline capacity number is not what you'll experience in real use. A 20,000mAh power bank typically delivers 10,000 -14,000mAh to your device after conversion losses. This is physics, not a defect. But some brands lose significantly more than others.
What actually matters:
- Real-world output efficiency (harder to find, but reviews test this)
- Charging speed: both input (how fast it recharges itself) and output (how fast it charges your device)
- Port quality and durability - the micro-USB input on cheap ones fails within months
- Weight relative to capacity if you're carrying it daily
We compared India's best power banks across travel, daily-carry, and high-capacity use cases.
The right one for travel is different from the right one for heavy daily use. Worth knowing before you buy.
Posted May 6, 2026, 3:42 PM UTC
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