Blink is also a battery-powered outdoor camera. It’s built around a unique chip that should provide an amazing battery life. However, while my indoor cameras are almost at the two-year mark using the original AA batteries, my Blink XT batteries usually last between 1.5 and 2 months. While I love my Blink indoor cameras, I would not recommend Blink for outdoor use. You can read my Blink XT review and comparison to Arlo Pro here.
UPDATE 16FEB2018: After two weeks, I must downgrade my review... it's become obvious that the Ring Floodlight Cam only detects motion during the day. At night, I can walk through the center of my defined motion zone, but the cam won't record until I'm within 10 feet of it. The defined zone is my driveway which is about 40 feet long and we have 3 cars. As long as the ne'er-do-wells only break into the car parked closest to the Ring cam, they will be recorded. A quick Google search for "ring cam won't detect motion at night" will yield many stories of the Ring product line failing to work in darkness. Apparently, the problem has been documented since September 2017 and Ring has failed to fix it. I must say that I'm beyond disappointed. At least I discovered this in enough time to send the cam back to Amazon for a refund.