INIUPortable Charger, 22.5W 20000mAh USB C in & Out Power Bank Fast Charging, PD 3.0+QC 4.0 LED Display Phone Battery Pack Compatible with iPhone 16 15 14 13 Pro Samsung S23 Google iPad Tablet, etcClimatePartner certified

This INIU 20,000mAh portable charger has been an absolute powerhouse for extended trips and heavy device usage, providing enough capacity to charge my phone 4-5 times and still have juice left for my tablet or other devices. The 22.5W fast charging really makes a difference compared to slower power banks - my phone charges almost as quickly as it would from a wall outlet, which is incredibly convenient when you're on the go. I appreciate the clear digital display that shows exact battery percentage rather than vague LED indicators, making it easy to plan when I need to recharge the power bank itself. The build quality feels solid and premium, and despite the high capacity, it's still reasonably portable though definitely heavier than smaller power banks. While it's pricier than basic models and takes up more space in your bag, the combination of massive capacity, fast charging speeds, and reliable performance makes it perfect for travelers, outdoor enthusiasts, or anyone who needs serious backup power throughout long days.

This 22.5W 20,000mAh power bank is easily the best portable charger I’ve ever owned. It’s become an essential part of my daily routine and travel kit. Honestly, if you're looking for a power bank for day trips or traveling and don't want to worry about running out of charge on a portable charger, this is the one to buy! Charging ability:With 20,000mAh, I get multiple full phone charges. For reference, I own a Samsung Galaxy S22 Ultra, and I can recharge my phone around 2-3 times from empty to full again with this charger, and possibly even more at times. I love how this charger supports fast charging for my phone because other portable chargers I've used in the past just charge my phone too slowly for me if I'm on the go. I also like the digital display as it makes it easy to know how much charge you have left on the device.Size:Another strong point about this device is its size. The size of this charger is the perfect size as it's not too big or bulky and roughly around the same size as my phone, just a bit taller in height. For the amount of power you are getting with this charger, I would expect it to be bigger, but it's still in a perfectly compact size that's easy enough to throw into a backpack. It might be a bit big for your pockets to carry, but it's definitely possible, as I've done it before, but it's not the comfiest, so I would suggest throwing it into a separate bag on the go instead. Another thing too is this thing is durable, I've dropped it and accidentally stepped on it a few times on accident and it's still for the most part intact and perfectly fine. Flashlight feature:I haven't used this feature much as I mainly use the device for charging, but it's definitely a nice option to have on the go and is really easy to use as well.

It has 3 charging ports, a flashlight, a black mesh bag to hold it. It can go on flights. Not too heavy, fit in my purse. 20,000mah battery is not exaggerated it holds a charge and charged my devices fast and it didn't take forever to recharge it. This power bank was very reliable and didn't disappoint on my vacation. Highly recommend this brand and this charger in particular.

Reliable powerhouse!!! This is the best battery pack by far of All the ones I have purchased over the years. Charges iPhone 3 times or my heated vest almost all day. This one is a replacement for one I dropped one too many times and it finally gave up the ghost. It was at least 2 years old.It’s heavy so if you want something light this wouldn’t be it. But if you’re looking for something with lots of power and reliability this is your go to.

Purchased this power bank (INIU B1-B5 20000mAh) due to seeing YouTube review of several PBs where reviewer took apart several PBs and showed that the batteries used in the PBs were actually rated far below the claimed capacities. INIU was one of few brands whose battery (in this case 20000mAh) label actually matched the advertised capacity. IOW, some brands that advertised 20000mAh capacity actually had batteries in them that were listed at 10000mAh etc.I used an old iPhone 7plus (with a 2900mAh battery) to charge from 50% back to 100% (or 1450mAh). The INIU B1-B5 went from 100% down to 86% (test was done three times with same results). Due to voltage conversion from the 3.7v battery to 5v USB output, the effective total capacity of the PB should be around (3.7/5)*20000 or 14800mAh. Since 14% of the PB was used, this amounts to 2072mAh. Since 2072 mAh of output from the PB was used to effectively charge 1450mAh of the phone battery, this amounts to a 70% charging efficiency. This means that I would get around 3.57 charges of my old iPhone 7plus out of this 20000mAh battery power bank.IIRC, I read somewhere that the expected efficiency of power banks should average around 80-85% due to conversion losses. At 70% loss, this power bank does not seem to be every efficient (although in my test, this may be due in part to the fact that the phone used is an old one).The positives: This power bank did charge my phone from 50% to 100 % in 1hr 57min which is pretty good given the iPhone 7plus is not fast charge (PD) capable. In my short time with the INIU, it seems to hold a charge well, did not heat up and did not heat up the phone while charging. It was also consistent in the charge times.The neutrals: While the thickness and weight of the unit does not lend itself to carry in a pocket while charging your phone (see specs on Amazon page), it is compact enough to easily carry in your carry on luggage as at a rated 74Wh it is well below the 100Wh limit imposed by the FAA and airlines. While it did underperform regarding capacity vs what it is advertised to be able to do, it was not as bad as some of the other power banks I tested, and came the closest to the advertised capacity as compared to some of the others I tested.The negatives: All power banks seem to use misleading specs in their advertising. Just because the power bank has a “20000mah” battery, does not mean that it will charge a device with, say a 4000mAh battery 5 times. Far from this due to various conversion losses etc. Also, I assume that these conversion losses can vary quite a bit between various power banks. While this power bank seems to not be very efficient, it met my needs (especially for the price).Unknowns: I have only just gotten this power bank and have only used it 4 times to charge my phone from 50% back to 100%. I anticipate using it primarily for travel. I have read reviews warning of battery pack swelling and failure etc over time. I have not had any problems with it so far but have used it for less than one week. So time will tell. In the meantime, my spouse also bought one as well so we will see.