I am baffled as to why I cannot charge beyond 50% regardless of charging method. Solar, alternator and even shore power will happily charge to around 50% as expected then quickly switches to float mode and no further charge is applied. I have a Victron multiplus,, Victron solar charge controller and an enerdrive dc2dc charger. All working well till now. Seems maybe an issue with batteries since it occurs across all charge devices?Any ideas or suggestions welcome.