Power Bank Portable Charger- 24000mAh High Capacity with Digital Display LCD Screen, 3 USB Output & Dual Input, External Battery Pack Compatible with All the Phone

I'm not an electrical engineer, I just googled some stuff and the math below checks out.I recently purchased an AdirPro heated jacket with a 2.1A input USB. That jacket came with a 6000mAh 2.1A battery, and while on the high setting was listed to last right around 3hrs. Actual math (6Ah/2.1A=2.86hrs, or 2hrs 51min). After roughly a week of daily 100%-0% use, I can confirm the rating and the math is pretty close to accurate.Today I received this battery, and after plugging it in, it was already preloaded at 72%. So I decided (like with all new batteries) to drain what's there and recharge. As it currently stands, I've left it in the jacket and left the setting on high.6:10pm to 8:30pm, 2hrs 20min from 72% to 00%. So using proportionality laws, I'm looking at around 3.24hrs of battery life, or 3hrs 14min. Taking (2.86/6000)*(3.24/???) for proportionality ((3.24*6000)/2.86), this battery is around 6797.20mAh.To be clear, the jacket's input is 2.1A, which means it will only draw at 2.1A even though this battery is rated up to 2.4A. There's no way this battery is 4x as strong as the 6000mAh battery the jacket came with (made by General Armor).I'm going to charge this battery from dead to full, and retest. If it was just an odd initial %, no biggie, and I'll happily adjust the rating and this comment. However if the battery continues to drain this quickly, I'll simply to go to Anker or RAVPower. This power bank is still at least 25% useful and for the price I'm okay with that, it just won't suit my wintry needs.Feels super durable, and is real easy to use otherwise.UPDATE 1: The battery at the last update was 0%, I have only charged it since. The instructions say that once it's fully charged, the LED will stop flashing within 35 seconds. It took from 9:00pm to 2:30am to charge to "100%", however I've had the battery on the charger for 1hr 20min at 100%, and the 'in' light is still flashing (which according to the instructions, means its still charging). That puts us at 7hrs 50min of total 'charge' time, and we're still going. I'm only charging when I'm home so I can monitor the levels, start, and stop times efficiently.This makes me curious, if the internals are made of several 6000mAh batteries linked together that could explain why the display isn't accurate, provided the display is only linked to a few of the internal batteries and not all of them. Again, not an EE but it could make sense.

This power bank was a huge help to us the other night when a power transformer blew near our neighborhood making us without power for a few hours. We were still able to charge our phones (both android and iPhone) to make calls, etc. I love the digital display (shown in one of the photos at 96%). It easily shows how much battery is left in the power bank. It charged 2 phones and an iPad with battery life still left. I highly recommend this for emergencies, travel, camping, etc. It is large, but no larger than an iPhone plus (as seen in one of the pictures). It would fit easily in a purse, desk drawer, glove compartment, briefcase, etc. We are very pleased with this purchase, and believe we will use it frequently.

This thing is awesome! I really like the digital display letting you know wherethe battery life is at and it also charges my phone really fast without using much battery life the on off button is a nice feature as well the only complaint would be thatit doesn't have a USB-C outlet but it does have a mini usb and an apple outlet overall i really like this product and for the price I'd recommendto anyone

This is a great power bank! I love the digital display on it showing the percentage of battery life that is left.This power bank has 3 charging slots on it which is a great feature. My husband and I like to go to music festivals and concerts for dates and we always make sure to bring a power bank with us so our phones are always charged and we can be reached in case of an emergency with out children. With the three ports it allows both of us to charge.You are also able to get 5-6 charges out of this power bank before it needs recharged. Great feature if you are using it because of a power outage.All in all I think it’s very useful to have on hand. Only downside would be that it’s a bit bulky but the positives outweigh that part of it!

Excellent charger I've been traveling recently and this charger works great. It gives me about 6 to 7 phone charges. The powerbank has 3 USB outports to charge your phone. It also has 2 in ports for different USB types.

This product at first would use about 10% charge to charge 10% of a iPhone so I became skeptical (1% loss for 1% provided) However, after using it more and breaking it in, this has proved to be worth my money. Today, my pack started at 100%, I charged 2 iPhones from 20% each up to 100% simultaneously, and then another iphone from completly dead to 80% by itself. At the end of the day, the pack was at 80% of charge, after providing 240% charge to iPhones. (1% lost for 12% provided) Spectacular!! The display is amazing, and relieves any anxiety about the exact charge of your battery pack. If you’re someone who needs to charge your iPhone multiple times quickly, and charge multiple devices on the go simultaneously, this product is definitely for you.

I bought this product because I was going on a week vacation to europe and needed something to keep my phone charged during the day while taking bunch of pictures. I was beyond surprised on how amazing this product worked for me. I have a samsung galaxy note 8 which has a big battery.This product held the charge very very well and charged my phone fast.Highly Recommend it

I bought this product to use during power outages, but also took it on vacation with me and it was fantastic. It allowed me to charge my phone and iPad on the go. It’s much heavier than I anticipated and is super easy to use. I like the battery life display, so I know exactly how much battery life it has. Great product for the price!