ACK-E18, FlyHi ACK-E18 Replacement AC Power Adapter + DR-E18 DC Coupler for Canon EOS Rebel T6i T6s T7i / EOS 750D 760D 800D 77D / EOS Kiss 8000D X8i DSLR Cameras (Replaces LP-E17 Battery)

For the price I believe it is fair as the rechargeable batteries go for way more. Although I was confused how to use it on a t6i I found out that you in fact have to have the battery latch closed to make it work but I would definitely recommend it if your trying to find a good ac adapter.