Review: Silicon Power QP66 10,000mAh 18W Power Delivery Power Bank

Silicon Power QP66 10,000mAh 18W Power Delivery Power Bank









  • Has a Quick Charge and Power Delivery port for fast charging
  • Uses three input ports that include a Micro-USB, USB-C and a even a Lightning input port
  • The entire power bank is made of Aluminum, with no plastic used
(Last Updated On: September 23, 2020)

When it comes to purchasing a power bank, especially now, one of the most important factors to know is if the charger features fast charging. That’s because most smartphones are Power Delivery, Quick Charge compatible, or they’re compatible with some other fast charging tech.

This Silicon Power portable charger has a 10,000mAh power capacity, but that’s not the most impressive part. There are plenty of 10,000mAh power banks on the market, many are similar to each other, but this Silicon Power charger does stand out a bit. This is mostly, due to its output and input charging. Let’s take a closer look.


Power Capacity:

The 10,000mAh power capacity that this charger has is going to be the most useful for smartphones only. Yes, we realize that this power bank has an 18W Power Delivery port, but it’s not powerful enough for charging USB-C PD compatible laptops. Also, a 10,000mAh power capacity is not enough for charging tablets or laptops anyways as those types of devices have larger batteries.

That said, a 10,000mAh power capacity from this Silicon Power portable charger can charge most smartphones to full power about two times or less. Most smartphones now have very large batteries, such as the Samsung Galaxy Note 20 using a 4,300mAh battery and Note 20 Ultra has a 4,500mAh battery.

The fast charging from this power bank does lower the conversion rate of the power capacity, so you’re left with less of power capacity to use. So when it does come to charging larger battery smartphones like the Galaxy Note series of phones, you can charge them to full power at least once, and have some power capacity left over, but the power capacity that you have leftover may not be enough to charge your phone again to full power.

Output Charging:

The output charging is powerful for this power bank, but once again, it’s powerful for smartphones and that’s because the two ports are a Quick Charge port and a USB-C Power Delivery port with an 18W charging speed.

The Quick Charge port can fast charge Quick Charge compatible Android smartphones, and it can still charge Non-Quick Charge compatible smartphones and tablets. The USB-C Power Delivery port has an 18W charging speed, and an 18W PD port is best for charging smartphones that are PD compatible.

The Power Delivery port on this power bank is not reliable for charging USB-C Power Delivery compatible laptops as 18W of charging power is not enough and will either charge them very slowly or not charge them at all. We did test out trying to charge a Lenovo Flex 5 laptop with the Power Delivery port, but that did not work, but the Power Delivery port was able to charge a Surface Go tablet, but not at its max charging speed.

Also, we tested the Power Delivery port with a Google Pixel, and the PD port was able to fast charge the Google Pixel. Then we charged an LG G7 alone via the USB-A Quick Charge port and the LG G7 was able to fast charge.

However, when we charged the Google Pixel and the LG G7 at the same time, then neither of them was fast charging and that’s because the max output is 3A when both ports are charging at the same time. So you’re only able to fast charge a single device at a time.

Input Charging:

Recharging this power bank is awesome and that’s because it has three input ports for recharging. The USB-C Power Delivery port can be used as an input port for recharging the power bank 18W, and so can the Micro-USB input port. The third input port is the Lightning input port that has a 5V/2.0A input speed. The Lightning port may have the slowest recharge speed for the power bank, but not many power banks use a Lightning input port, and it can be very useful for iPhone users that are using the Power Delivery port on this power bank to fast charge their iPhone.

As they can use the same USB-C to Lightning cable to recharge the power bank.


Size and Weight:

The size of 10,000mAh power banks is in the mini range, and that’s true with this one. This Silicon Power portable charger has a 5-inch length and a 0.5-inch thickness. The weight of the charger is 7 ounces.

It’s a slim power bank that we were able to easily place into a pocket, and the power bank is not heavy at all, and keeping it in your pocket for long periods does not cause any problems.

Functional Components:

Charging from this power bank does automatically start, but there is a power button that can be used to restart charging if it has stopped and the power button can be used to check the remaining power capacity level.


Structure and Material:

The build quality of this Silicon Power portable charger is incredible, and as the entire charger is made of Aluminum, and there are no signs of plastic at all. Usually, Aluminum power banks have some plastic, but this one does not, and so it’s a lot more sturdy and tough.


As the power bank has a small size, it still does not overheat and this is likely due to the max output being set to 15W, as you can’t fast charge two devices at the same time.


With its use of Quick Charge and Power Delivery, this power bank is most reliable for smartphones that are compatible with either of those fast charging technologies. This power bank is not reliable for charging Power Delivery laptops or tablets, as 18W of Power Delivery is not enough charging power for those larger and more powerful devices.



There is enough power capacity for charging smartphones to full power about two times, and the charging speed from the ports is great as the charger uses a Quick Charge port and a Power Delivery port. The recharging is great as the power bank uses three input ports with one being a Lightning input port.


The charger has a slim and small form factor that can easily fit into a pocket.


The charger is fully built of Aluminum with no plastic in sight. The power bank doesn’t overheat either as the charger only has a 15W max output.


This Silicon Power portable charger is most reliable for fast charging Quick Charge or Power Delivery compatible smartphones.

Silicon Power QP66 10,000mAh Power Bank Specs
Power Capacity10,000mAh
USB-A Port5V–6V/3A | 6V–9V/2A | 9V–12V/1.5A
USB-C Power Delivery Port5V/3.0A | 9V/2.0A | 12V/1.5A
Max Output18W
USB-C PD Input5V/3.0A | 9V/2.0A
Micro-USB Input5V/3.0A | 9V/2.0A
Lightning Input5V/2.0A
Size5.3 x 2.6 x 0.5 inches
Weight7.5 Ounces


Silicon Power portable chargers are a somewhat different type of power bank on the market, and that’s a difficult thing to do in a market where portable chargers are plenty. However, they’ve done a great job with power banks having great build quality, featuring two fast charging ports, and three input ports to recharge the power bank.

Buy at Silicon Power

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