Do you think anything of the Chibi-Robo! series? If you do, then you really need to buy Chibi-Robo! Zip Lash because if you don't you might not see him in his own games ever again, and he'll be stuck making cameos in weird things like Captain Rainbow.
That's according to Nintendo producer Kensuke Tanabe in an interview with Verge. Apparently Tanabe can control Chibi-Robo's fate. It's actually pretty rare that a producer will outright say what people should intuitively know to be true: If the game doesn't sell, you're not going to get any more in the series.
Basically, Tanabe stated, "this might be the last chance for us", putting himself together with Chibi-Robo's future. Of course, if Chibi-Robo's batteries cannot be replaced, Tanabe still has a future at Nintendo.