r/Sphero

Finally found my ULM after moving and it being in storage for a few years. I remember using it in 2020 and then probably a few more times after that (still have the app too), so it probably had not been charged in 3-4 years. I plugged it last night after retrieving it from storage and it started right up speaking, revving, headlights on. I think it idled long enough to enter sleep mode, but now it won’t charge? I should say I do not know if it is charging or not. Do you think it is a dead battery problem now and that was the battery’s last hurrah? 🤔 Thank you in advance!

After a while without working due to battery problems, I decided to open it and replace the battery on my own, since I couldn't find the original battery to buy I improvised with what I could find in Brazil

I bought a 12v battery from Makita screwdriver, opened it and redid the circuit to be compatible with Lightning McQueen's, it worked super well and the autonomy improved a lot compared to the old battery at the time when it was new, with this new battery I have autonomy of almost two hours playing with McQueen