Best Power Banks Under ₹2,000
Advertised capacity and real output rarely match on budget power banks. We ran each one through full charge cycles on a phone to measure what you actually get, not what the box claims.
Mi Power Bank 3i 20000mAh
The closest we've measured to its advertised capacity at this price — roughly 3.2 full phone charges in real testing, where most rivals fall noticeably short of their own claims.
How they compare
| Model | Capacity | Output | Ports | Price |
|---|---|---|---|---|
| Mi Power Bank 3i | 20,000mAh | 18W | 3 ports | ₹1,499 |
| Ambrane 20000mAh | 20,000mAh | 22.5W | 3 ports | ₹1,699 |
| boAt 10000mAh | 10,000mAh | 18W | 2 ports | ₹999 |
| Zebronics 20000mAh | 20,000mAh | 12W | 2 ports | ₹1,299 |
The full ranking
Common questions
Why does a 20,000mAh power bank not fully charge my phone 4 times?
Voltage conversion loses roughly 30-40% of rated capacity in practice. A genuinely well-built 20,000mAh unit like the Mi realistically delivers 3-3.5 full phone charges, not 4-5.
Can I carry these on a flight?
Yes — under 100Wh (roughly 27,000mAh at 3.7V) is allowed in carry-on baggage on Indian domestic and most international flights, which covers every power bank on this list.
Does higher wattage output charge my phone faster?
Only if your phone supports that charging speed. An 18W power bank won't charge a phone limited to 10W input any faster — match the power bank to your phone's actual max charging spec.