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2004lebanshee

Charger and house bank questions...

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Ok here is the set up. 2006 265 8.1 motor. Has fridge, microwave, vacuflush, lights, and upgraded stereo. Most days are day boating where I want to run the fridge and play some tunes. I may add a smaller tv.

What I have now is a 2 bank battery set up with 2 seperate 24 class batteries (one starting which is newer and 1 older deep cell). I also have a protech 4 1220 onboard charger.

There is also a old 3rd battery in the motor compartment just hooked up to the 3rd bank of the charger next to the starting battery. Owner said it was there for jump start purpose. That's comming out.

What I want to do is keep the starting battery in one as is. I want to remove old 24 bank house for 2 31 group deep cells in parallel 

Can I hook up this charger to all 3 batteries and be fine? Or do I hook up one bank to the starter and one bank to one of the parallel batters and assume it sees them as one? 

Do I scrap the charger and get something else? The reviews are muddy on this thing. Id rather keep it if it works and use the  cash towards trim tabs and or a 28p prop but that's down the road.

What half way affordable options are there if I should replace?

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On a side note does this charger have anything to do with my microwave operation? It works on short power only. Not sure if I have an inverter somewhere or not.

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Keep checking out as much electrical stuff as you can.

ALWAYS ISOLATE the starting battery....ALONE ….with  NOTHING ELSE  on position #1 of the big battery selector switch.  Is that switch a …..1---2---both----off ?  Important for your music running times with the engine not running.

I would recommend you keep all batteries Lead Acid types to get maximum life from them on the engine alternator. It is set up for Lead Acid batteries only.  Be back in a while  Need to check out your charger abilities.

The 2006 Protech 4 1220 was a bad failure prone model. Company offered various trade deals to replace it. The better unit was / is the 1220i.  Back then. Chargers see VERY HIGH ABUSE when charging near dead batteries.  THAT IS NOT what they are designed for.  EVER !!

Pick a new charger.  BASE IT ON charging ….RUN DOWN..... 2 type 31 sized batteries barely operating the music system when you plug into dockside power.   Call the company of whoever you like better.  Ask for Technical Assistance to help select the strong enough charger.  A multi step charger is mandatory with your starting battery always fully charged.  House always run down. …....A simple dumb charger can fry / boil out the water rapidly.   Can not recommend any make or models to you. 

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Yes my switch is a 1 2 both and off. I plan o.n keeping lead acid batteries as well. Thanks for the info. I'll have to do some looking around.

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7 hours ago, 2004lebanshee said:

There is also a old 3rd battery in the motor compartment just hooked up to the 3rd bank of the charger next to the starting battery. Owner said it was there for jump start purpose. That's comming out

If its only connected to the charger, its basically useless, unless you climb into the engine hold and connect up some jumper cables. This is less then ideal. I would consider connecting it to the existing house battery, basically doubling your anchor time in terms of Ah. 

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1 hour ago, Was_Wylie_Tunes said:

If its only connected to the charger, its basically useless, unless you climb into the engine hold and connect up some jumper cables. This is less then ideal. I would consider connecting it to the existing house battery, basically doubling your anchor time in terms of Ah. 

Yeah it's right next to the starting battery with the house on the other side of the motor. It's also 10 years old. I'm scrapping the whole house and spare battery set up for new batteries. I really dont trust it. The boat is new to me only a month or to so I'm trying to plan all these changes in the winter months.

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R emember to check the water levels in each battery . All the cells.  Get batteries with water caps that screw on. So much easier to check. I bought a automatic shut off battery filling container. press the nozzle into the cell opening . water flows . Then stops ..... Hopefully at the correct depth.  I only add water right after a long recharging. That is when the water is hottest and has EXPANDED due to heating. Doing the refilling then PREVENTS overfilling a cooled down battery. Which would cause acid to possibly expand & spill out of the hole. 

A good charger will not cause excessive heating & bubbling out of the cell.  ........ASk the Technical Support if their charger will cause excessive bubbling of acid out of the hole. Can it be avoided ?

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52 minutes ago, 2004lebanshee said:

Yeah it's right next to the starting battery with the house on the other side of the motor. It's also 10 years old. I'm scrapping the whole house and spare battery set up for new batteries. I really dont trust it. The boat is new to me only a month or to so I'm trying to plan all these changes in the winter months.

Let me clarify. Im not advocating retaining the actual battery(s), just the concept of two batteries as one house bank. You've got the ideal switch for this setup, sounds theres room and existing battery trays/hold downs and you seem to be  in the market for a new charger. Just need the cabling to make the connecting between the existing house battery and the "jumper" battery.   

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