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Two batteries or one? What is best?
captg
Member Posts: 3 ✭
My 2012 188S is set up for two batteries. When I purchased it used, there is only one battery. Interstate 24M-RD 500CCA. Should I installl a second battery? What type of battery should it be?
Thanks for the help
Thanks for the help
Best Answer
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Should have a Marine starting battery for the engine(I wouldn't use anything less than 800cca) and have a deep cycle for everything else, some of the engine manufactures are now recommending that the engine must have its own battery with nothing else powered off it.
And also it's not a good idea to ever run with the switch on both, unless either battery will not start the motor and you think that both together will, always run on battery 1 or battery two, I usually set them battery 1 for engine and battery 2 for electronics, just alternate them, couple things can happen depending on the engines charging system, if one battery is lower and the other is full the charging system can look at it like the system is low and send juice to both batteries, over charging the one that's full, also it could pick the one that's full and say ok you don't need any juice I'm going to stop sending it now and not charge the lower one, and if the charging system fails when you are on both, guess what your not going to notice until both your batteries are dead, alternators are designed to charge one battery at a time, it really doesn't take long running to charge either, and only turn the battery switch with the engine off.Post edited by 89checkmate on
Answers
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I grew up on the water and learned at a very young age that if you have any tronics running...you should have a second battery...a deep cell is best but I have one deep cell and one cranking on my boat...2012 Hurricane SD2000
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2 batteries. I can run my stereo and whatever else all day at anchor and know that I still have a full charge on my other. I switch back to both batteries when preparing to leave though so both can be fully charged.
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Two batteries for sure. Also need a god quality selector switch so you can isolate in case of an issue.
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That was supposed to be "good" not god.
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I have two batteries, but both are Dual Purpose. I don't run stereo for long periods of time, could probably get by with one battery, but like the peace of mind with two (since the boat came with two). There is probably a three year age difference between the two batteries so, allegedly, I should always have a good one. Will probably replace one this year.
Also, recommend an on-board charger.
2000 Hurricane SD 217 OB -
Always go with 2 or more depending on the size of the boat and load.
A Pirate 200 years too late, the canons don't thunder there is nothing to plunder, I'm an over 50 victim of fate..
