New Xiaomi Power Bank 2 (10,000mAh) Teardown

Xiaomi has released the Xiaomi Mi Power Bank 10,000mAh and the Xiaomi Mi Power Bank 20,000mAh in the fourth quarter of 2,016. Two power banks have received significant attention in the market. In December 2017, the new Xiaomi Power Bank 2 (10,000mAh) was launched.

The following are the specifications of the new Xiaomi Power Bank 2 (10,000mAh).
Product model: PLM09ZM
Capacity: 10,000mAh 3.7V (37Wh)
Rated capacity: 6,500mAh 5.1V (Type 1A)
Input port: Micro-USB
Output port: USB-A
Input: 5V/2.0A, 9V/2.0A,12V/1.5A
Output: 9V/1.6A MAX, 12V/1.2A MAX
Dimensions: 147 x 71.2 x 14.2mm

Now, we will start taking apart the new Xiaomi Power 2 1,000mAh and see its internal structure.

First, remove the white plate from the top and bottom of the power bank.

After removing the white plate at the bottom, two Philips head screws can be seen in the plastic housing.

The Phillips screws tightly connect the bottom plastic casing with the internal frame.

After removing the screws, the casing can be taken out. Then, all the internal components can be seen.

The battery is covered with sponge cushioning tape to prevent friction.

The new Xiaomi Power Bank 2 features a 4.2V lithium battery with a capacity of 10000mAh. This battery is manufactured by Tianjin Lishen.

The NTC temperature probe directly contacts the battery to ensure more accurate temperature detection.

The battery is stuck in a plastic casing with a double-sided adhesive.

The plastic casing is made of ABS+PC composite material, which has excellent toughness and hardness performance.

Close-up of the PCB

Close-up of the PCB

The ZMJ F8216AUBN is a 24-pin microcontroller developed by Zimi Electronics Technology, unlike previous 20-pin microcontrollers.

The ZMI P03Q7VQ is a power management chip developed by Zimi Electronics Technology. The specifications of this chip have not been made public. Its predecessor model is PO2Q6RB.

The chip marked with ZMY6K is a custom fast-charging chip, FP6601m.

Two output ports with independent current-limiting protection.

Xiaomi’s custom copper USB-A output port has good quality.

The new Xiaomi Power Bank 2 (10000mAh) and the Xiaomi Mi Power Bank (10000mAh) are both priced at CNY 75 (approximately $12). However, the new Xiaomi Power Bank comes with a micro-USB port and dual USB-A ports, making it more convenient to charge multiple devices. Additionally, although the new Xiaomi Power Bank 2 1,000mAh and the old model use the same battery brand, their battery specifications are different: the old model uses an M74 type 4.4V 38.5Wh high-density lithium battery, while the new Xiaomi Power Bank 2 (10,000mAh) uses an N22 type 4.2V 37Wh standard lithium battery. Although the capacity is the same, the new battery is larger in size than the old one. Overall, the new Xiaomi Power Bank 2 (10000mAh) offers better value for money compared to its predecessor.

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