marine electrics

[seasick]

Two conflicting views on leaving the boat plugged into pontoon electric supply. One view is that one should leave the electric supply plugged in whilst away from the boat because it ensures that the leisure batteries and independent bow/stern thruster batteries are kept topped up thus prolonging battery life. The other is that leaving the lead plugged into the berth mains risks damaging effects from earthing problems from other boats . Any thoughts please

 

[Plum]

Two conflicting views on leaving the boat plugged into pontoon electric supply. One view is that one should leave the electric supply plugged in whilst away from the boat because it ensures that the leisure batteries and independent bow/stern thruster batteries are kept topped up thus prolonging battery life. The other is that leaving the lead plugged into the berth mains risks damaging effects from earthing problems from other boats . Any thoughts please

There is no "right" answer. If the batteries are fully charged when you leave it and all the isolators are off so there it nothing draining the batteries then my view is not to keep plugged in as the batteried should retain a high percentage of charge even after many months.

www.solocoastalsailing.co.uk

 

[Seastoke]

Well do you have a bilge pump if you develop a leak , I would want my battery charged we also run on board cameras for when we are away.

 

[Mr Googler]

Fit a galvanic isolator and leave plugged in. I’ve done that for years….no issues.

 

[DavidJ]

I have a galvanic isolator but never like to leave it plugged in. It’s often months (re COVID 2 years) between trips so I have a solar panel and a regulator thingy and (hopefully) that has kept the both battery banks ok.
My solar panel is under the screen so I get reduced light but it gives 1-2 amps which is ok for keeping the battery alive (again hopefully after 2 years)