Xiaomi Power Bank 4i 20000mAh 33W Super Fast Charging PD - Preview

Mobile Accessories / Xiaomi

Xiaomi Power Bank 4i 20000mAh 33W Super Fast Charging PD

A powerhouse 20,000mAh portable charger with 33W Power Delivery, triple port output, Power Delivery 3.0, and 12-layer advanced circuit protection.

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At a glance.

Massive 20,000mAh high-density lithium polymer battery capacity
33W SonicCharge & Power Delivery (PD) fast charging output
Triple port output (2x USB-A + 1x Type-C) charges 3 devices simultaneously
Two-way fast charging refuels the power bank itself in ~5.5 hours
12-layer circuit protection against short-circuits and overheating

What stands out

Charges modern smartphones from 0 to 50% in under 30 minutes
Charges typical phones 4 to 5 times on a single charge
Low-current charging mode for smartwatches and TWS buds

Things to consider

Substantial weight (434g) due to real 20,000mAh cell capacity

The specifications

Battery Capacity: 20,000mAh (74Wh)
Max Output: 33W Max
Ports: 1x Type-C (In/Out), 2x USB-A (Out)
Weight: 434 grams
Dimensions: 15.4 x 7.4 x 2.7 cm

A good fit for

Train and flight travelers across India
Power users during electricity power cuts and road trips

Behind the details.

The source references recorded for this product. Our editorial approach is based on documented information, rather than personal testing claims.

Verified technical specifications for Xiaomi Power Bank 4i 20000mAh 33W Super Fast Charging PDXiaomi Corporation Technical Whitepaper · Recorded 2026-11-10