Lumina 15000 mAh Ultra Compact Portable Charger 2-Port External Battery Power Bank High-Speed Charging Technology

There is very little to complain about with this rechargeable battery pack!When it arrived (1 day after I ordered it!), I plugged it into a charger. The LED readout said it was at 83% and I let it charge until it was at 100%. Based on my experience, if you need the backup power immediately, you'll probably have what you need.It got its first workout on May 20 at Golden Gardens in Seattle. We were hosting many people for a b'day party so I brought the Lumina along in case anybody's phone went dead. I started to charge my Samsung 6 with the Lumina when my phone got down to 33%; it took a little over an hour to bring my phone up to 100%. The Lumina went from 100% to 97% (only used 3% of its capacity to charge my phone). My son-in-law topped his Android up as well - it took about 1 minute for each percentage point of charging that his phone needed (his phone was at 70% and it took a tad over 30 minutes to fully charge).Then my wife asked for the Luimina to charge her phone which was down to 2%. A little over an hour later her Motorola G3 was fully charged and the Lumina was now down to 85% so it had plenty of charging left.The Lumina comes with 2 USB charging outputs; it comes with one short USB to micro-USB cord and I dug through all my USB cords until I found a 2nd short one and both of them fit in the box with the backup battery. It's quite compact for all the charging power that it holds.We like to camp off-grid and this device will allow us to keep our phones charged up while we're camping (we have solar power for lights, and propane for our fridge, but can't charge our phones when we're on solar power).I have only one complaint, and that's more of a suggestion. Unless you have a 2 amp/5 volt USB charger, it will take a long time to charge the Lumina up. I have a plethora of USB chargers I've accumulated over the years but you'll need a new one or recent one if you want to find a 2 amp, 5 volt USB charger. It might behoove Amazon to offer one of those as an add-on to this item.

 I recently purchased this Lumina 15000 mAh Ultra Compact Portable Charger as we really needed two power banks. I wanted one for me as well as one for my husband.My other power bank is somewhat smaller and doesn’t seem as durable. This one has a little bit of weight to it and it feels very heavy duty.My favorite feature right now is the LED readout of how much power is left in the charger. Also, you just shake it back and forth to light it back up and see how much is left on it.I stay on the go quite often, I have three kids and go to the gym seven days a week. I like keeping this charger in my purse so I can charge my phone while I am in the store, running misc. errands, and I also bring it into the gym with me. I use my phone a lot while I walk and run on the treadmill for about an hour. I usually drain my battery to about 50% by the time I am done. Then I have a class that starts at 8:30 so during my class that is when I will recharge my phone using this device. My daughter also has a tablet she uses while I work out and it's nice to have something like this to charge the tablet while she plays on it.So far it has worked perfectly and it seems that I get a few full charges out of this at one time. I have not hooked two devices to it at once yet but I am sure it will be just fine if I ever need to do that. This power bank charges my Galaxy S7 pretty fast.It puts me at ease knowing I have a backup way of charging my phone too in case we ever lost power.Overall, this is an awesome device and I would recommend it to others needing an on-the-go power source.

I have owned a couple of power banks for the past couple of years, and this one is wonderful.This power bank has a capacity of 15000 mAh, which is my largest one yet, with my second one being at 10000 mAh. So this one has 50% more capacity. It packs a punch with 2.4A per port. This should be sufficient for modern devices (unless its one of them power hungry tablets, which, only wall adapters will work). I only have two portable devices that I carry around, which is my phone (LG G Flex) and my iPad (iPad Mini 2), and this is enough for both of them for a couple of days.One thing I love on this is that it has no buttons! It is convenient to have no buttons, as you just plug and go. To check the LED power display, just shake it, and it displays the percentage on a LED display. This is also great, as you know the exact amount of power you have left. This is essential to large capacity power banks, as it allows you to determine whether it is enough for the day or not, compared to having 25%, where you don't know if there is 1-3750 mAh.A couple downsides are that it is pretty heavy, and but it allows for the capacity. One more thing is that it comes with a label on the power bank, which I believe could just be a card instead, as it does not peel off cleanly.Overall, it is a great power bank, for a very good price. Allows me to charge my phone multiple times, with limited charging on the power bank, although it does take forever to take to charge due to the capacity.