Which one would I pack?
Xiaomi 4i is my first choice. I prefer its overall performance in everyday use, and its higher published USB-C output gives a compatible phone more charging headroom. I’d pick Duracell if I wanted the option to refill the power bank with a Micro-USB cable.
| Feature | Xiaomi 4i | Duracell DU030 |
|---|---|---|
| Model | PB2030IN | DU030 |
| Rated cell capacity | 20,000mAh | 20,000mAh |
| Published peak output | 33W over USB-C | 22.5W |
| Output ports | 1 USB-C, 2 USB-A | 1 USB-C, 2 USB-A |
| Recharge the power bank via | USB-C, up to 30W | USB-C or Micro-USB |
Sources: Xiaomi India specifications and Duracell DU030 specifications.
Charging a phone and earbuds together
Both have USB-C and USB-A outputs, so either can serve a mixed set of cables. Xiaomi publishes a shared output of 5V/3A when using two ports. Duracell lists support for up to three devices at once. If you need a quick phone top-up, try charging the phone on its own first and check which charging profiles your phone and cable support.
What I noticed using both
I’ve used the Duracell to charge several devices at once. I prefer the Xiaomi overall, but I haven’t timed the two side by side or measured how much energy each delivers. Their matching 20,000mAh cell ratings don’t tell you how many top-ups you’ll get from either one.