Very long-lasting power bank/battery and recharges quickly. It recharges my phone a half dozen times. I mostly use this to power my camera for long periods of time. If video recording, my camera will last for about 90 minutes. I carry one of these in my pocket and connect to my camera with a four-foot USB cable. This allows non-stop recording for the entire day. I carry two, just in case I need it. Sometimes to recharge my gimbal if needed. I selected the 30000mAh size versus a larger Power bank/ battery because if you fly on any commercial airline, a 30000mAh battery is the largest battery you can legally carry-on a plane. Power banks/batteries are not allowed in checked luggage. When you get to your destination, you will find that your power bank is missing from your checked luggage with a note from TSA. So, power banks/batteries must be in your carry-one. You can check the TSA website for the maximum allowed batteries, it is 30000mAh. You do not want TSA confiscating your power bank, then doing a lengthily search of you and your luggage over an oversize power bank. The 30000mAh power bank, TSA will pick it up, look at the size and put it back down, allowing you to go on your way.

Charger is a little big but works great!

I wrote four stars on this product because it's not able to charge my little usb blender. It charged phone several times, and recharges itself very well. It keeps itself charged a lot and I like that. I sort of wish that it was able to charge the blender but it's not that big a deal. While the outside is plastic and feels like it the product is hefty and all in all I am satisfied with this.

I liked this battery pack, but it died within 11 months. Updated review - After I posted this, the seller reached out and gave me a full refund, which was great, so I'll change my review from 3 stars to 4 to reflect their excellent support.

Love this portable charger! The battery lasts for a good long time and I have had it for a couple years now and it still work perfectly! It is a little thicker than some people might like but I take it on all my hikes and anywhere I may go where I may not have a charger. This portable charger hasn’t failed me yet, love it!