With faster processors and ever-growing display resolution, the battery life for smartphones remained the same even though all manufacturers have put in effort to improve the power efficiency of our devices. As more and more phones are using non-removable batteries, a power bank seems to become a necessity, whether you like it or not.

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Luckily, there are some affordable options in the market from manufacturers like ASUS and Xiaomi. We have just reviewed ASUS’s 9600mAh ZenPower and the review of Xiaomi’s 10400mAh Mi Power Bank was done back in 2014. So why not compare the two most affordable power banks we have in the market?

Sections

  1. Design & Capacity
  2. Charging Speed, Other Features & Verdict

The Design

Both of them look really alike, except the fact that the Mi Power Bank has rounded corners while the ASUS ZenPower is more squarish. They are made of aluminium which feels great in hand and helps in getting rid of heat generated. Both power banks are well-built and I have no concern over their durability. Each of the two has one charging port, one reset/battery level checking button and 4 white LEDs to show how much charge left after the button is pushed.

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Both of them were announced with plenty of colour options but not all colours are made available at the end. For ASUS ZenPower, currently only the blue and pink options are available while the gold, silver and black options are marked as “coming soon” with no ETA. We only have the silver option here in Malaysia for 10400mAh Mi Power Bank and the other options are unlikely to reach here. So a small plus for ASUS ZenPower here if you favour striking colours. On the other hand, you can get rubber protective sleeves for both of them, which come in multiple colours and a cheap price, provided you are looking at the right place.

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While two of them are almost equal in height and thickness, the ASUS ZenPower is much narrower than the Mi Power Bank, making it easier to hold. Weighing at 250g, the Mi Power Bank is 35g heavier than the ASUS ZenPower (215g). The difference in portability is not day-and-night, but certainly you can feel the difference.

Capacity

The ASUS ZenPower certainly has a compact size but do take note that the capacity is smaller (9600mAh VS 10400mAh). So the ZenPower being smaller than Mi Power Bank is expected at the first place. The 800mAh capacity difference is really not a lot and the difference is even smaller if you are considering the actual output. The 10400mAh Mi Power Bank managed to provide around 7000mAh worth of charge during our review while we have recorded 6600mAh of output for the ASUS 9600mAh ZenPower.

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This means that the difference in actual output is actually smaller than what you might expect. Depending on which device you are using, the significance of 400mAh output difference could vary. If you are using the iPhone 6, the Mi Power Bank can give you an extra 22% charge. For phone like Samsung Galaxy Note 5, the difference is just around 13%.

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