u/CardiologistFun802

I spent a lot of time chasing a strange Roborock S5 Error 13 case: it would randomly undock, back up, and keep re-docking in a loop.

I tried the usual things first: cleaning the contacts, checking the dock side, and the common hardware fixes people usually suggest. None of them solved it for me.

The actual problem in my case was the battery ID resistance, not the dock contacts. I wrote up the full step-by-step fix here in case it helps someone else with the same stubborn behavior:

How to Fix Roborock S5 Error 13 (Random Undocking & Charging Loop)

If the usual Error 13 fixes did not work for you, this may be worth checking.