I bought it for points, so it's not so offensive. A weak and slow charge makes the accessory unreliable support in an emergency. If you continue to actively use your phone, the Battery Pack will not be strong enough and the iPhone will still turn off. You can take an exact copy of this on Aliexpress for 1900 - you will get everything the same, but for adequate money;)
2 Pack EN-EL19 Battery & Rapid USB Charger For Nikon Coolpix S32-S7000 Cameras - OAproda
41 Review
Sennheiser HD 206 Closed-Back Over Ear Headphones - Discontinued Model
195 Review
NinjaBatt High Performance Battery For Toshiba A665 And L755 Series - 6 Cells/4400MAh/48Wh
40 Review
Rechargeable 12V 3000MAh Lithium Battery Pack: Power Bank For LED Strip, CCTV Camera & More
43 Review