A:AnswerI can't answer the compatibility of this keyboard, but I found the keyboard, while cheap, is not worth the money, having failed after just six weeks. SEE my review.
A:AnswerOn the backside of keyboard is the battery compartment. It is a little difficult to "slide" open. Normally there is a groove or raised area that you press firmly on with a finger or thumb to gently slide away cover. With my keyboard I had to slip my nail into the space between battery cover to pry open and then slide cover out. On the other hand, you won't have a loose battery cover. Also, there is no ON/OFF switch on this keyboard.
A:AnswerIn my experience with this keyboard, no more than 2 feet. I've had mine for a month and maybe trying newer batteries may make a difference. I don't even remember if the instructions mentioned any of this...the wireless range.
A:AnswerI use this keyboard over 50 hours a week for the past 2 months and I haven't had any problems yet. The battery is extremely long lasting in my opinion for a wireless device.
A:AnswerWould depend on the model of TV it is. Generally the keyboards I have seen for smart TV's are Bluetooth. What you may want to do if you have not, is go through the owners manual to first see if the TV supports a keyboard, then usually they will tell you what kind to look for if they are supported.
