Hi my name is Malcolm aka fixed1t. I bought several second user Sphero’s to give one as a present to a nephew during lockdown, but it was dead. So I have successfully opened an SPRK+ and changed the batteries and glued it back together in the same shell. Unlike the videos on youtube destroying the Sphero shell completely I don’t do that. I tried it put links to my fixed1t youtube Sphero repair videos but they have been labelled as SPAM and removed. So Sphero’s can be repaired after all, I’m glad as I now have many dead ones to fix LOL. Here’s hoping that this also doesn’t get removed, otherwise you will all continue to throw them away when the batteries die.