Anker 337 Power Bank (PowerCore 26K) Portable Charger, 26800 (Open Box)

I purchased this power block to replace a heavier / larger 16000mAH power block. I'm very impressed with its form factor (rounded edges) and compact size, all hiding a powerful USB charger with intelligent charging ports. Besides its power capabilities, the fact that it can be quickly recharged and ready to go more quickly, was a big selling point for me. While I know that other reviews fuss that it does Not include a charging wall adapter, I understand that Anker assumes with this product purchase, that you most likely already have several of them anyhow. It should be noted that if you do intend to purchase this power block, go ahead and order a multiport wall adapter with high wattage output [less than $20], most of which now offer intelligent port control... better yet, get a newer Anker wall adapter that offer power in compact form factor. There is no Power On/off switch on these units; only a battery level indicator for stored energy level. Simply plug into the USB and the smart ports will detect the connected device and charge it based on the device needs. When charging is complete, the power block will stop charging and not over-charge the connected device...sweet! The only thing I dislike a bit is the Micro USB ports used to recharge the block. I assume their design intent was to keep it very compact, but I'd wish the mfg. would get away from micro and move to Type-C ports [as I would accept the size trade off], besides afer awhile; those micro USB ports start to wear out. Another thing to note; when you push in your USB plug into the block, be sure that its seatted 'All the Way', not at the initial resistance. The power block indicators will light up but that will not indicate that the port is "truly" charging. Have the device side connected first, then plug into the power block... as the intelligent ports will detect the device charging needs THEN begin charging. Check your device to see if it shows the charging 'lightning-bolt'... if not unplug from power block, the re-plug back into the port - fully seating the USB plug. Charging should begin. That's it! I purchased a separate travel case for storage of block/cords/ wall adapter, but I use the nice little padded mesh bag for daily use and to keep the Anker Power block protected. Great purchase and benefit. Thank you Anker. P.S. Anker portable speakers are also amazing little power houses too.