Number of cycles Pylontech batteries went through in an ESS system?

Hello, in a (non-Dynamic) ESS system comprising US5000 batteries, is there a way in VRM or via the Cerbo to see how many cycles they lived through?

No. The manufacturers definition of a lithium cycle is a bit variable. Best read from the bms as that’s what support will check for warranty.

You can read that data with MultiSIBControl software, you will have to make an RS232 cable to communicate with the bms