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Batteries Won't Charge with Battery Charger

Discussion of batteries, chargers, wiring, generators, distribution panels, battery switches, etc.
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crquisto
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Batteries Won't Charge with Battery Charger

Postby crquisto » May 24th, 2015, 3:58 pm

I had to replace all three batteries on my 405. Now Battery 1 and Battery 2 will not charge using the Battery Charger, either off of Shore Power or Generator Power. I think the Generator battery is charging, but since it carries none of the house load, I'm not really sure. As part of another problem (see "Battery Blowup" in this section) I tested the volts out of the charger per the tech support people guidance, but whenever I leave the boat sitting with anything on and the Battery Charger on with about 20 amps showing on the charger, the batteries still drain. By jumping them, I can start my engines and then charge the batteries, but that shouldn't be required. Any ideas on checking out my problem, and also, do I really need to select only 1 or 2 with the engines running and not BOTH as the manual says?

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waybomb
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Vessel Info: 1987 3697 Carver Mariner
1988 Cougar 46 Kevlar Vee offshore
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Re: Batteries Won't Charge with Battery Charger

Postby waybomb » May 24th, 2015, 5:24 pm

On my boats the charger connects directly to each battery. As does the bilge pumps. My battery switch is always off when I leave the boat. When I am running I run on one only. Either 1 or 2.
Not saying that what I do is correct but it had worked for me for over 20 years.
Thanks
Fred
1964 Barron Flatbottom with BBC Chevy
1969 Glaspar Avalon /1969 Johnson Electromatic 85
1987 Carver Mariner
1988 Cougar Kevlar 46' with triple blown 572s
http://s4.beta.photobucket.com/user/waybomb/library/
Past - 1988 2807, 1989 4207 Aft
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Ondercin
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Re: Batteries Won't Charge with Battery Charger

Postby Ondercin » June 1st, 2015, 7:34 pm

How old is the charger? I just replaced our original charger (1988) with a brand new 30amp 3 bank charger and it works amazing... After winter storage the charger wouldn't get the batteries up to full charge and after putting a car charger on them for a coupe days they went to 100%.. I put the batteries back on the boat charger and after a couple weeks the engines couldn't start due to weak batteries.
Since replacing the charger everything has been great!
1988 carver 3607 AFT
Penetanguishene
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Ramsport47
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Re: Batteries Won't Charge with Battery Charger

Postby Ramsport47 » June 2nd, 2015, 6:32 am

There should also be 3 circuit breakers labelled "battery charger" that need to be in the on position. These are usually by the batter switch (es)
Kenny
1998 Carver 310 Santego
T-Merc 350 Mag MPI (300hp)
Port: Cedar Point Marina, Sandusky, Ohio
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Re: Batteries Won't Charge with Battery Charger

Postby feeez » June 2nd, 2015, 7:30 pm

In our boat the battery charger is connected to the batteries in the same manner as Ramsport suggest. There are three breakers one for each battery bank. Carver also says as you do that the battery switch should be on 1 or 2 and only "both" when either battery will start the engine. I have found that unless my battery switch is set to "both" the batteries don't get charged properly while connected to shore power. I have a feeling that there may have been some "rewiring" done in the past. I took a look behind that panel in the salon..... yuck what a mass of wire back there.







waybomb wrote:On my boats the charger connects directly to each battery. As does the bilge pumps. My battery switch is always off when I leave the boat. When I am running I run on one only. Either 1 or 2.
Not saying that what I do is correct but it had worked for me for over 20 years.
Former 2001 350 Mariner owner
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waybomb
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Posts: 1926
Joined: February 5th, 2013, 9:24 pm
Vessel Info: 1987 3697 Carver Mariner
1988 Cougar 46 Kevlar Vee offshore
1969 15' Glaspar / 1969 Johnson Electrmatic 85
1964 Barron Flat bottom drag boat
A couple of dinghies
Location: Saint Joseph and Trenton, MI
Has thanked: 39 times
Been thanked: 279 times

Re: Batteries Won't Charge with Battery Charger

Postby waybomb » June 2nd, 2015, 9:05 pm

There's Fuses between pumps & charger and batteries but it is a direct link to battery power. Actually I believe the connection is at the back of the battery switch where the main cables connect to the switch not going through the switch.
Thanks
Fred
1964 Barron Flatbottom with BBC Chevy
1969 Glaspar Avalon /1969 Johnson Electromatic 85
1987 Carver Mariner
1988 Cougar Kevlar 46' with triple blown 572s
http://s4.beta.photobucket.com/user/waybomb/library/
Past - 1988 2807, 1989 4207 Aft

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