Iniu B6 power bank review
There are a lot of power banks on the market that seem great on paper, but it can be hard to know how they hold up in the real world. Iniu is one of my favourite brands thanks to very high-quality power banks with great features and a long warranty, but just as importantly, very reasonable prices. That said, when shopping online, the list price is often quite high, but the power bank is typically sold for much less.
The little Iniu B6 offers a lot considering the price tag, with a 10,000 mAh (37 Wh) capacity and a 20W (9V, 2.22A) PD 3.0 output, which will fast charge most phones fully at least once, with enough leftover for other devices or a second charge later on. The B6 measures 13.6 x 7 x 1.5 cm, weighs 210 grams – a better-than-average size and weight for the capacity, making it ideal for slipping into a pocket, purse or bag.
The B6 has a single USB-C port, as well as two USB-A ports and a large easy-to-read digital display that shows the capacity still available to use. In the box, you get a USB-A to USB-C cable and a carry bag – the latter is a nice inclusion, as the soft-touch coating on the B6 is great to hold but prone to scratches. The soft-touch coating also holds fingerprints and fluff, and I do worry that it might degrade and feel sticky in the future, but so far it's held up well.
The power bank has an LED torch that can be turned on by double pressing the power button. Sure, it’s not very bright, but I've found it very useful for finding lost items in a dark bag. Plus, it will literally run for days – I often use it as a portable night light when travelling. For example, a bit of dim illumination is very helpful when trying to find the bathroom in a dark, unfamiliar hotel room, and avoids needing to turn on the main lights.
The B6 also has a pull-out phone holder that turns the power bank into a stand when charging – also very handy when travelling.
Iniu B6: Price & specs
Iniu B6: Test results
I conduct comprehensive testing of power banks to make sure they can meet the manufacturer's claims. All in all, the B6 gives excellent results that are well above average – especially considering the price.
In testing, the B6 has excellent voltage accuracy and can output 85% of its rated capacity at 20W (9V, 2.22A) and an even better 91% at 5V. These are very impressive results considering the affordable price. The B6 also supports PPS mode from 5V to 11V at 2A, and 5V to 5.9V at 3A, allowing compatible phones to charge faster and more efficiently. Note that while the B6 is listed as 22.5W, that's at 5V 4.5A (or 4.5V 5A) which isn't supported on most phones.
I first tested this Iniu B6 back in May 2023, and have used it as one of my main power banks ever since. Along the way, I've performed periodic cyclic testing and have not turned up any appreciable capacity loss, so I am very confident that the B6 will last well long term. But of course, it’s worth mentioning (again) that Iniu offers a generous three-year warranty, providing peace of mind if you do have an issue.
Should I buy the Iniu B6?
Buy it if...
You need an affordable power bank
The B6 is one of the best-value power banks available, and is often on sale for even less from retailers like Amazon. The B6 offers features, specs, warranty and test results that are as good as premium power banks.
You plan to charge a phone
The 10,000 mAh capacity and 20W output is perfect for topping up small devices when on the go. It’s also just the right size to slip into a bag and not even notice it’s there.
Don't buy it if...
You want to charge a laptop
While great for charging small devices like phones, tablets and earbuds, a higher output power bank is a better option for laptops or handheld gaming devices.
You need to charge multiple devices
The 10,000 mAh capacity is perfect for topping up a phone, but if you want to charge multiple devices, a larger 20,000 mAh power bank is a better option.
Also consider
The Iniu B6 is one of the best affordable power banks available, but below are a few other options if you are looking for something different.
Iniu B41 power bank
The B41 is slightly slimmer and lighter than the B6, but doesn’t offer fast charging. Still, that’s a perfectly fine trade-off depending on your charging needs.
Read our full Iniu B41 power bank review
Iniu B5 20,000 mAh power bank
For those who like the look of the B6 but need a larger capacity, the Iniu B5 has the same number of ports and output voltages and amperage as the B6, but has a 20,000 mAh (74 Wh) battery. It includes the same torch, but no phone holder, and measures in at a larger 13.5 x 7.1 x 2.5 cm and weighs 362 grams.
Read our full Iniu B5 power bank review
How I test power banks
I get hands-on with every power bank I can, and perform extensive testing in both the lab and real-world scenarios. Using equipment like the ChargerLab POWER-Z KM003C, I check charge voltage, protocol support, and log capacity tests.
Each power bank is also tested with real devices, including phones, tablets, laptops, and others, and connected to a programmable load tester for multiple charge cycles. I carry a selection daily in both pockets and bags to assess their durability and ability to withstand rough, everyday use.
All measurements and weights are personally verified, ensuring accuracy beyond the manufacturer’s listings.
Want to know more? Read about how we test.
