Battery does not last

Battery will not stay charged even when I turn it off between uses. I cannot use it more than 2 days without charging it. I am only using it a couple of hours each of those days and I turn it off after I get where I am going. Very frustrating. This is my 2nd Rii. My other one that I use for hours daily, will only need to be charged about every 3 weeks. Very disappointed in this newer model.

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