This has been one of my best purchases by far!! I have an iPhone 6s Plus and as anyone with an iPhone knows their batteries die so fast and you still pretty much need to be connected to a charger nonstop, but now I don’t have to be! I can just charge this as well as my phone overnight and when my phone battery starts getting low I turn it on and my phone starts charging! I am so happy to be able to not live attached to a phone cord and by an outlet nonstop!!
Niubity Mfi Certified 4000 mah Removable Rechargeable Battery Case for iphone 6 Plus / 6S Plus - Black https://www.amazon.com/dp/B0196SVKYQ/ref=cm_sw_r_cp_api_zPBFAbJQ8RDTT