Batteries

[lobstamike]

21 ft Bayliner "project" boat with a Volvo AQ123 130 HP 4 cylinder engine. Need to replace the missing batteries. Can someone recommend battery size? CCA? Dimensions, etc. Thanks.

 

[alldodge]

Re: Batteries

4 cylinder I suggest a group 24 with as many CCA's as you want to buy, at least 700 but more is better. If you have a house battery then use a group 27 deep cycle, you could probably get by with a group 24 deep cycle but need to know what electronics you are using. If there is no house battery and the second battery is used as backup then use another group 24 starting

Edit :welcome: to iboats

 

[jerryjerry05]

Re: Batteries


No AQ123?
The battery can be as low as a 450CCA
Running 2 batteries?2 is the best setup.
Then 450's will be ok.
A single battery then anything above750CCA should be used.
Deep cycle's are good for trolling motors and running electronics.
The starting batteries are best for starting.
Since it's a "project" replace the cables with at least #4 cable and don't use the pre-made ones.
The connectors are crap and will fail.
Use good copper ones.The cable connecting(pic) tool is cheap

 

[sweet addiction]

Re: Batteries

First off, unless you are operating your boat at 0 degrees F...Cold cranking amps do not matter. What you need to look at is MCA(marine cranking amps). I have a Merc. 4 banger and have been running Interstate group 29's(model SRM-29) for ALL my needs for years now, and they have been flawless. I will post a link giving a break down of the various ratings for those batteries.

Cold-Cranking Amps (CCA)--A rating that is used to define the battery's ability to start an engine under low-temperature conditions. BCI defines it as "the number of amps a lead-acid battery at 0?F (-17.8?C) can deliver for 30 seconds and maintain at least 1.2 volts per cell (7.2 volts for a 12-volt lead-acid battery). See also CA and HCA.

Marine-Cranking Amps (MCA)--A rating that is used to define the number of amps that a lead-acid marine battery at 32?F (0?C) can deliver for 30 seconds and maintain at least 1.2 volts per cell (7.2 volts for a 12-volt lead-acid battery). This artificially high rating should not be confused with CCA.

http://www.interstatebatteries.com/cs_eStore/content/product_info/marine_f.asp

 

[alldodge]

Re: Batteries

What an elephant was doing in my pajamas I'll never know
Dang it Jim I'm just an old country doctor
Captain I can't change the laws of physics

 

[sweet addiction]

Re: Batteries

What an elephant was doing in my pajamas I'll never know
Dang it Jim I'm just an old country doctor
Captain I can't change the laws of physics

???

 

[sam am I]

Re: Batteries

.....My God Man, is that a gun I'm looking down? {{{{Hauls BUTT}}}