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Xiaomi Mi PowerBank 2C 20.000mAh Review: Almost the Same at Lower Price Tag

Xiaomi Mi PowerBank 2C

Xiaomi has sold the most powerbanks last year. This is an amazing result if taking into account two facts. First, 80% of all Xiaomi power banks are fake. Second, the power bank market is populous. In 2016, the company focused on making smartphones sold over 55 million units from this category. That’s why this manufacturer is continuously working on new products. Last year it launched an awesome device dubbed as the Xiaomi Mi PowerBank 2 20.000mAh. As the name suggests we are dealing with a large capacity battery that can charge any large-battery smartphone for several times on a single charge. It was very popular, that’s why we kept it in the spotlight and tried to find out its key features and the key to success for more than one time. As for now, Xiaomi decided not to launch the third-gen power bank at this moment and replaced the existing mode with another named the Xiaomi Mi PowerBank 2C 20.000mAh. This battery is priced at 129 yuan ($20). As you remember, the second-gen model was initially priced at 149 yuan ($23).

Xiaomi Mi PowerBank 2C

The first-gen Xiaomi Mi PowerBank with the same capacity uses TI BQ25895 single-chip and provides one-way fast charge technology. But it supports fast charge only for the input, while the output is still at 5V. It was sold for 149 yuan as well. The second-gen product uses TI BQ25895 + TI TPS61088 design and comes with a two-way fast charge support. The Xiaomi Mi PowerBank 2C 20.000mAh is priced lower at 129 yuan. So it requires detailed review in order to understand whether the manufacturer has reduced the pricing due to weaker hardware or the vice versa.

Unlike the previous models, this one comes in a transparent plastic shell allowing to make out the power bank inside.

Xiaomi Mi PowerBank 2C

On the back, we can see all the key features of the Xiaomi Mi PowerBank 2C such as the product name (PLM06ZM), input interface (micro USB),output interface (USB-A), battery power (20000mAh 3.7V (74Wh)), actual output capacity (13000mAh 5.1V (TYP2)), input specs (5V2A / 9V2A), output specs (2x 5.1V2.4A / 9V2A / 12V1.5A MAX18W), and the manufacturer name.

Xiaomi Mi PowerBank 2C

It looks identical to the second-gen model, but it is larger in size. Looking at the size comparison table we understand the Xiaomi Mi PowerBank 2 is the smallest model in the market with such a capacity battery and two-way charging option. Thereafter, the thickness of the Mi PowerBank 2C remains the same, but the length and width have been increased. The overall dimensions are 149.5mm * 69.6mm * 23.9mm that affect the weight as well (from 330.5g to 358g).

Xiaomi Mi PowerBank 2C

The surface of the battery is similar to the second-gen phone coming with many pits.

Xiaomi Mi PowerBank 2C

Two interfaces are covered with a dust sticker.

Xiaomi Mi PowerBank 2C

Generally, there are three jacks – micro USB input port supporting 5V2A / 9V2A fast charge, and two USB-A output ports supporting 5.1V2.4A / 9V2A / 12V1.5A fast charge.

Xiaomi Mi PowerBank 2C

However, only one of those output ports can provide a fast charging when two ports are connected to devices. The next one will charge the phone at the regular 5V output.

The start/power button is placed on the side. It’s a bit depressed to avoid false touches.

Xiaomi Mi PowerBank 2C

The bottom part carries the same info found on the cardboard inside the packaging.

Xiaomi Mi PowerBank 2C

As simple test via the POWER-Z FL001 showed the Xiaomi Mi PowerBank 2C supports Qualcomm’s QC2.0, QC3.0, and Huawei FCP fast charge with the maximum output power of 20W or more.

Xiaomi Mi PowerBank 2C

Xiaomi MI PowerBank 2C 20.000mAh Tear Down

The shell is fixed via an ultrasonic welding up. The firmness is at the highest level.

Xiaomi Mi PowerBank 2C

The bottom shell is a double-sided groove.

Xiaomi Mi PowerBank 2C

The battery surface is made of an anti-seismic sponge adhesive. We can also see the 4.2V 37Wh N22 type batteries that reduce the energy density. As you remember, the second-gen model uses 4.4V 38.5Wh M74 model batteries. The discharge pressure platform is slightly lower.

Xiaomi Mi PowerBank 2C

There is a temperature probe between two batteries.

Xiaomi Mi PowerBank 2C

The battery shell is surrounded by anti-wear protection sponge. There is also a separate LED power indicator hole to avoid string light.

Xiaomi Mi PowerBank 2C

PCB front view.

Xiaomi Mi PowerBank 2C

PCB back.

Xiaomi Mi PowerBank 2C

This part locks the second port at 5V charging when the first one uses fast charge.

Xiaomi Mi PowerBank 2C

The micro USB port.

Xiaomi Mi PowerBank 2C

The USB-A port.

Xiaomi Mi PowerBank 2C

The Xiaomi Mi PowerBank 2C doesn’t follow its predecessor’s TI TPS61088 + BQ25895 program. It uses an independently researched and developed power management SOC ZMI P05Q70A. Its parameters remain unknown.

Xiaomi Mi PowerBank 2C

The 8205 USB-A mouth is responsible for protecting the output. The QBU2C is a single-chip regulator.

Xiaomi Mi PowerBank 2C

There is also a Fitipower FP6601Q multi-protocol fast handshake recognition IC.

Xiaomi Mi PowerBank 2C

It’s the 5054K protection tube.

Xiaomi Mi PowerBank 2C

The ZMI 8216SU is an independently researched and developed microcontroller. At last, there is the FP6601Q responsible for another USB-A port’s fast charge recognition output.

Xiaomi Mi PowerBank 2C

Conclusion

The company has made some changes in the Xiaomi Mi PowerBank 2C 20.000mAh battery. As a result, it still provides two-way charging options with fast charge technologies. Plus, it’s available at 13% lower price tag than its sibling. So we can state the manufacturer has modified one of its best-selling products to attract more customers. We don’t mind at all.

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