We have two VE Multiplus 3000 connected in parallel, and 6 x VE AGM supercycle 125 batteries which are a year old. We had a VE engineer check out the set up one month ago and he did a diagnostic with his laptop. He changed the ABS to 14.7V and float to 13.8. However, our batteries are not holding charge now and the electrician here in Italy said that 5 are dead. He then connected them up and measured the voltage going in from shore power which was up to 15.75 v.
Could the recommended VE engineer have set something incorrectly, or is one or both of the multiplus 3000 units damaged somehow?
Everything seemed fine before he changed the settings, but he seemed to know what he was doing! I don't want to destroy a new set of batteries.