High Capacity Power Bank 100000mAh Fast Charging 22.5W PD 20W Portable USB C Battery Packs with 7 Outputs & LCD Display Battery Bank for iPhone, Samsung, iPad ,Macbook & Outdoors Camping (GREEN)

I can't speak for the long term performance of this power bank, but from my experience so far it seems to hold a huge charge that lasts longer than I expected or maybe even need. It does take a long time to charge like the other reviews say, which isn't too big of a deal. The digital screen will have a "sanded" appearance new, out of the box, but fear not, it is just a protective film that is easily removed.

Lots of backup power. Last for a very long time

It took an initial charge to 98% (for some reason that's it's maximum charge). It then charged my Samsung S22+ phone 13 times. It then recharged to 98% by my 100W solar panel. So far I am pleased with this power bank and find the seller professional in responding to a question.

Do not buy if ur wanting a 12v powerbank it does not do 12v and it does not come with manual without special adapter and u can not return it. It's just a really big cellphone charger. I know Amazon says it's 12v but it's not do not believe them. I bought it for my 12v heated jacket it does not work

Mine came 75% charged, too. Instructions say the first 3 cycles should be: Charge to 100%, then down to 0% -- three times. For a 100,000 mAh power bank, that's a lot of homework. Contradictory instructions. On one enclosed paper, it says "Input port supports charger with fast charging option." On a different enclosed paper, it says "A 5V | 1A charger is recommended if a power adapter is not included." Well, a charger is not included, but a 1A charger is not a 'fast charger' in this realm. It supports fast charging, but they recommend a non-fast charger? Maybe some reviews about the Power Bank charging SO SLOWLY are because some people are following the 2nd paper, trying to charge up 100,000 mAH with a 1 amp charger, lol. Performing differential equations, I calculate that a 1 amp charger would take 100 hours to go from 0% to 100%. And you have to do that three times. I'm sure the intention is to use a quick charger that can deliver 18 watts, 12V at 1.5 amps, to the power bank. Someone just didn't notice the erroneous small-print about the 1A charger they included with the power bank. I do have a quick USB charger with a 100 watt jack. My USB tester says the new power bank will take 12V at 1.5 amps from my quick charger. That's 18 watts as specified. The power bank maybe has another mistake. Printed on the side of the power bank, it says Output 2 is USB 1, whose max output is 12V/1.5A (22.5W). If its capacity is 1.5A, then it's 18 watts, not 22.5. If it can deliver 22.5W [as marketed], that would be 1.875 amp capacity, not 1.5. Round DC connectors -- Everyone raise your hands that will be using the round 12V input or the round 5V output. The faux leather handle is thin, feels like it will tear if actually used any length of time. And when it does tear, the power bank will fall to the floor and split open. It doesn't smell like leather either... Printed on the power bank next to the output jack specs, it also says Cell Capacity 3.7 volts 100,000 mAh 370 Wh; Net Capacity 62,000 mAH 310 Wh. 310W/62A=5V, confirming that the 62,000 mAh is the working 5V capacity. The Marketing Department prefers to provide the internal 3.7V battery specs, not the 5 volt working specs. I can't find where it says what the power bank chemistry is. They should say, so we can research how best to treat the battery, if we care to maximize its lifetime. But the 3.7 volts printed on the side suggests either Lithium Ion or Lithium Polymer. Both are 3.7 volts, but should be treated differently. Directions say best capacity will be achieved when the power bank is charged and discharged 3 times. I never heard of that. Do they really mean to charge to 100% and drain down to 0% --three times? They should specify the desired percentages. In my limited experience, 100% and 0% is the worst way to treat a Lithium Ion, not the best way. I'll have to ask the Artificial Intelligence if there's something special about the three initial cycles. The flashlight gives a nice soft white glow, good for something when the power goes out in the middle of the night. More like a mood light, like a few candles. But you'll still want a real flashlight if you want to avoid tripping over the cat. Besides, the cube is a bit large to use as a traditional flashlight. Press the flashlight button until it comes on. Then tap it to cycle between Dim, Brighter, Brightest, and Blinking Brightest. Update, 2 days later. I spoke to the artificial intelligence. It confirmed that before normal use, the power bank really should be charged to 100%, then discharged to 0%, and do it for 3 cycles. This calibrates the power bank's Battery Management System. I never heard of that either. If the directions tell you to perform that procedure, then your power bank has a Battery Management System. One of its functions is to give a (hopefully) accurate readout of the remaining charge level, hence the calibration procedure. It took almost a half a day, or something, to increment the power bank's charge for each 1% using my 1 amp, slow-charge, USB charger. Until it got to 98%, at which time the charge stopped incrementing. I had to attach my 100 watt USB charger to get the power bank to go up to 100%. Maybe the last two percent are a special situation, and if I left the 1 amp charger hooked up for a few more days, the power bank would have crept up to 100%? The artificial intelligence also said that during the charging-half of those 3 charge-discharge cycles, it's ok to interrupt the charging, and even draw a little bit of power from the power bank before resuming the charge. Then, for the discharge-half of the initial 3 charge-discharge cycles, for a 100,000 mAh battery, it will take a long time to discharge it down to 0%; nice work if you can get it. It didn't seem necessary to inquire about doing a little charging during the discharge-half of the initial cycling. Just say No. And lastly, of the four USB-A outputs arranged in a square, the one in the upper left corner is supposed to have quick-charge capabilities. Mine didn't increase beyond 5 volts, and I assumed the power bank had a failing quick-charge function. But, I purchased new USB-A to USB-C cables (Amazon item# B07T8FR5L9), specified as "fast charging cord," and then the power bank's USB-A came to life and delivered 9V to my phone and 12V to a smaller power bank. No problem. Apparently, the original cables I used were not spec'ed for quick charging.

This seems to be very well thought-out & Quality-made. Features are perfect, EXACTLY what I was expecting & needing! I wish Amazon had the option of saying whether one would buy this again, as yes!, I’d definitely buy this again!

This power bank seems to work very well it is packed with power 100,000 milliamp hours works as it should

It seems like a very large capacity power cell. Even though I purchased a high out put adapter and heavy duty USB C cables, it still took aprox 20 hours to charge first time.