I was astablesh the connection between the phone and module it was easy to configure and control by phone it was very cheap compared to the other optional source of purchasing.
These batteries are cheap compared to other sellers and are of good quality. Used these for my wifi router mini ups, the earlier backup was 4 hours but after using these batteries these batteries give the backup till 5hrs.
Order was shipped without Power bank module, that too was informed. Later when I called in to check the status of delivery, that is when informed Power Bank module was out of stock, hence ordering the stuff remains useless. Now I have to buy the power bank module again with some other vendor and paying this hefty shipping fees. Else the battery seems good.
Quartz components is a reliable online shop for electronic components. This product also meets all requirements.