INIU Laptop Power Bank, Compact 20000mAh 65W Fast Charging Battery Pack

I just got my INIU BI-B62 power bank and I've been really impressed so far. Here's what I like: + Fast Charging: It charged my phone super quickly! I plugged it in nearly dead and within an hour it was already at a good percentage. No more waiting around for hours for a full charge. Compact and Portable: It's surprisingly small and lightweight for its capacity. Perfect for carrying around all day. + Multiple Ports: Having both a USB-C and a USB-A port is great. I can charge my phone and another device simultaneously, which is a lifesaver when I'm out and about. + Built Quality: It feels really sturdy and well-made. The fabric mesh cover adds a nice touch and seems like it will protect the power bank from scratches. + Digital Display: The digital display is a great feature. It shows the remaining battery level clearly, so I always know how much juice I have left. I've only had it for a short while, so I can't speak to its long-term durability or how many full charges it actually delivers. But based on my first impressions, I'm really happy with this purchase. It seems like a great option for anyone who needs a reliable and portable way to keep their devices charged on the go.

Fast charging and long lasting

Great power bank Huge capacity and handy I use this to charge my drone and batteries as well as my phone and other gadgets. Rapid charging, great value for money, well designed handy easy to read percentage indicator and all round solid power bank It is heavy and bigger than my phone but that's a trade off due to how much portable power I require. Charging rate obviously decrease with the amount of stuff on charge but it can get my phone full in under an hour! Pair with decent rated cables and it's a winner. If you need a large capacity, cheapish, quick charging power bank this may be the one.

I have taken this on a few work trips over the last few months and it is an absolute lifesaver. Because it outputs a genuine 65W, it actually rapid charges back up to full speed, rather than just keeping it hovering at the same percentage like cheaper power banks do. It is fairly heavy, but that is expected for a huge 20000mAh battery. The little digital display showing the exact percentage is a great feature. I've used it on a full weekend of camping for my phone and still had 60% left haha!

First impressions were very good - nice heft, digital read-out, high anticipations for the fast charge aspect. My OnePlus phone fast-charges at 65W, and with either of my two high-capacity USB cables it will charge my phone from 2% to 100% in 35 minutes. This charger, using either of the fast USB cables and from the charging/65W port, took about 90 minutes. I did four timed charges to be sure there wasn't a mistake on this. That's still faster than my older power bank, but not as advertised. If my phone charged at 20W max I wouldn't have noticed. I installed the Ampere app and this showed the charging rate shot up to 1500mA then dropped back to 450mA for the remainder. Worse was to come. When the power bank ran down to 0% itself (which happened unexpectedly suddenly), it reversed direction and charged itself back up from the phone, the phone going from 62% charge down to 40% charge. The centre port seemed fine though, and wouldn't be able to reverse-charge. A reluctantly returned item, and only the 2nd item I've returned to Amazon in the last few years.

After several technical tests with a USB multimeter, I can confirm the battery cells are high quality and hold their capacity very well. However, you might notice some 'erratic' behavior with the percentage display. For example, it might jump from 85% to 100% suddenly during a 20V charge, or stay at 1% for over 30 minutes while still outputting 25W. This isn't a battery failure; it’s a 'drift' in the Fuel Gauge/BMS software. The cells have more energy than the counter thinks! Tip: If your percentage seems off, do a full discharge until it shuts down and then a full 100% charge. This recalibrates the internal counter. Great hardware, just keep an eye on the software calibration. Keep in mind: often calibrations worn battery's cells faster. Technical Review: Excellent Cells, Conservative BMS Calibration I am uploading these photos to show a specific behavior of the Power Bank's charging curve. In the images, you can see the unit at 84% SoC (State of Charge), yet it is already behaving as if it were nearing 100%. Technical observations: Voltage/Current: The unit is negotiating 20V but the current is being throttled. Saturation Phase (CV): At 84%, the BMS (Battery Management System) is already forcing the transition from Constant Current (CC) to Constant Voltage (CV). Normally, this 'saturation' phase happens much later (around 90-95%). Thermal Management vs. Fuel Gauge: This suggests that either the internal Fuel Gauge has a significant drift (reporting 84% when the cells are actually closer to full) or the BMS is being extremely conservative with thermal management to protect the SOH (State of Health) of the cells. Conclusion: The fact that it can sustain high power delivery even at a reported 1% (sometimes for 30+ minutes) proves the cells are high-quality and have a massive energy reserve. However, the software calibration is a bit 'jumpy'. If you see it slowing down at 80% or jumping from 85% to 100%, it's just the BMS syncing with the actual cell voltage. Highly recommended for hardware quality, just be aware of the software's quirks.

A great item. I get at least 5 charges out of this power pack. Brilliant, for use if you are travelling.

I have bought some cheaper power banks in the past and they have been ok at best if I was to describe them but they would last maybe one phone charge at most. I was nervous buying an unfamiliar brand especially with all the horror stories you hear but having now had this power bank for several months, it has pleasantly surpassed my expectations considering the low price. I have used it for not only charging my phone but at events for powering several USB lights via a 4-way usb extension and it lasts for many hours including charging phones at the same time. I have found it so good I have just purchased my second one to use as a personal product while I keep the other one for business use. I highly recommend this one for anyone needing a reliable on-the-go power bank. I won't say it's the lightest one to carry around in a pocket however it's not the worst either and will charge your phone or other equipment several times over before needing to be recharged itself.

Kupiłem powerbank Iniu, bo wcześniejszy model BI-B5 jest super. Mimo tej samej pojemności na etykiecie, efektywnie pojemność jest o połowę mniejsza.

The power bank did not charge according to specifications so I returned it. Was contacted relatively immediately by inui's customer service and they sent a new one which arrived the following week. Although I was unhappy with the first one, I am very happy with the new one and very good customer service.

tres content, j'ai repris un 2e

J’ai testé cette batterie INIU avec différents appareils (smartphone, tablette et ordinateur portable), et elle tient toutes ses promesses. La charge rapide en 65 W est un vrai atout : mon ordinateur se recharge sans difficulté, mon téléphone atteint plus de 50 % en une trentaine de minutes et ma montre se charge également. La capacité de 20 000 mAh permet plusieurs cycles de charge, ce qui la rend pratique pour les déplacements ou les journées sans accès à une prise secteur. La présence d’un port USB-C en entrée et en sortie la rend très polyvalente, et la compatibilité avec de nombreux appareils est un vrai plus. Côté design, le format reste compact pour une batterie de cette capacité, et la finition est correcte. Après plusieurs utilisations, je n’ai pour le moment pas noté de surchauffe. En résumé, c’est une batterie fiable, performante et bien pensée, idéale pour ceux qui cherchent une solution de charge rapide et durable.

Erg blij met deze aanschaf. Laad erg snel op, en doet wat je van een powerbank verwacht.