PQ290,

PERKO Inc. - Catalog - Battery Switches

This is the switch I have. It is essentially just a single unit that accomplishes the same purpose as two single-pole switches.

Thanks. Brad.
(937)545-8991

BBYSTWY,

So, where would one insert the charge lead(s)? It would appear that all this device does is bridge the two batteries when it's seeing a charge from the alternator. I don't think I'd want that. I've heard horror stories about people setting their switch to "both", to charge them both as they tooled around the lake, shutting down for a moment, then hitting the key, only to find out that one of the batteries had a dead short and had drawn the other one down with it, as the boat was running and supposedly charging both batteries. Like I said, I never run on "both". The last thing I'd think you'd want is a device that does just that automatically. Maybe I'm missing something....?

Thanks. Brad.
(937)545-8991

It never connects the two...just sees voltage from both and sends the current to whichever one needs it....it does not connect both batteries together...when there is no input voltage present it simply shuts off and there's no current going anywhere and the batteries are still isolated from each other.

Let`s start with this .

Maybe Im not understanding you question but with dual battery charger you don`t go thru any switches, the charger will have 2 leads one for each battery . It charges them individually , one could be 20% , the other 80%, it doesn`t matter .
The Seablue relay is only for "house stuff" batteries . It Isolates the house battery from starting batteries but once the engines are running (or trickle charger ) it will recharge the battery.
So if you plug in your huge mechanical dildo into the house battery and but by the time you`re done the dildo battery is dead because of the huge dildo amprage drain, you can still start the engines and on the way home the dildo battery will be recharged and ready for action again.
Hope this helps!:lolhit:

Dan you always have such a way with words :ernaehrung004: hahahaha

So one engine 2 batteries and turning them on to both is your concern?
I think I get it now. I have one starting battery per engine, one dildo battery.

Mine are seperated till I hit a switch on the dash that pulls in a relay and connects them both for starting, it`s a momentary switch so I don`t leave it on like a dummy

This thread took a weird turn. :cartman: Thanks everyone for the help.

Dan,

My interest is in charging while running. I have a dual battery charger that I plug in and hook up while the boat is closed up.

I don't have a "house" battery and an "engine" battery. I have two batteries that serve all functions, and a switch that allows me to manually decide which one is active, or both. I'd like to keep that setup, but wouldn't mind being able to charge both batteries while the engine is running without fear of a faulty battery draining the other one.

And, for the record.... We don't have a huge mechanical dildo. She just sits on the edge of the headrest ridge of the sundeck while the engine is running. Just sayin'..... :kiss:

Thanks. Brad.
(937)545-8991

https://cimg9.ibsrv.net/gimg/www.off...fec64c6003.gif

Dan,

Nope. I would be interested in charging both batteries while I tool down the lake with the switch on either 1 or 2. I have never left the switch on "both". In fact, the times I've had to set the switch as such, the first thing I do after starting the engine is set the switch back to either 1 or 2, depending on which one seemed stronger. I charge that one first, because it is less likely to be toast.

Thanks. Brad.
(937)545-8991