Insignia™ - 15600 mAh Portable Charger - Black/Gray

I purchased this battery pack about six months ago from Best Buy. I absolutely love it. It does take forever to charge, but that's because it's got a boat load of juice to refill inside. It charges my Nexus 6P faster than the "rapid" charger that my phone came with. It has charged my phone dozens of times so far and I seem to get at least ten half power to full charges before the battery shows less than half life left.

Was going on a trip to Hawaii and figured I might not have enough mobile battery to survive a day taking pictures and video without a charger. Was able to survive on one of these for an extra day on top of my mobile battery. I bought another one just in case but didn't have to use it. Got it for a great price at under $30. One 15600 Mah battery back up charger is all you need for about a day or so of usage.

I bought this battery as part of a sale Best Buy had and also because of the capacity. It's really good and lasts a long time. I have several other small batteries which are convenient when walking but use this one for longer treks or when not able to get to an outlet. It has ample supply when fully charged and can charge iPads which is what I wanted.

I absolutely love this portable power supply. We recently used it on a long flight and totally recharged two tablets and a smart phone and still had plenty of juice left in the power supply to charge another device, if we had to do that. The charger never got hot. Pretty cool

I full time RV, hike and ride a motorcycle; having this portable power unit is a must. It fills that low or out of power need with quick convenience. I like the way it charges my smartphone faster than a fast charger without getting my phone as warm/hot-great for life in the southwest desert. It's just the right size for me. Except for being thicker it's the same size as my smartphone and I get 5 full charges or dozens of top ups. You have to provide your own charger but it works with any micro usb source. I charge it off my RV solar array so it's like free power on the go! It fits in my camera bag always ready for my on the go lifestyle.

When I travel, I carry too many devices - I admit that. But: what is worse than too many devices is to have all of them run out of power halfway through the trip because there's no time to charge them. I have owned brand named power packs before, and got good service from them. When I found this item at BestBuy, the price was great (about 25% less than the comparable name branded item) so I was skeptical about its performance. Not only did it exceed my expectations, it also exceeded the performance of my old battery pack by about 25% -- meaning rather than just getting one phone charge and one pad charge out of it, I got a second phone charge from it of about 50% of a full charge. That means a lot when you're travelling for 14-18 hours on a long trip and your layovers won't allow you to plug in for any decent period of time to the wall. I completely recommend this item and would buy it again in a heartbeat.

brought it to a trip to Canadian Rockies, recharge my iPad three times in one charge. Recharge is very fast. Did not loss any capacity after used for about four months.

I love the fact that once fully charged, it will keep charged for several weeks of no use. It re-charges my phone very quickly.