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ContinuousWave: Whaler Performance
deep cycle ok for starting?
|Author||Topic: deep cycle ok for starting?|
posted 08-25-2003 11:45 PM ET (US)
1993 Mercury 200, carb. Other power needs include the usual electronics for offshore fishing, as well as lights and baitwell.
I obviously need at least 2 batteries, just wondering if I need to make one of them a starting or dual purpose, or would it be ok to go with 2 or more deep cycle?
I just bought the boat, and it came with a relatively new deep cycle but not near big enough to make me want to use it as my primary "house" battery, so if I need a starting battery, then I'll end up needing two more.
posted 08-25-2003 11:51 PM ET (US)
You don't say how the batteries were configured.
How I would do this is to have a separate cranking/starting battery. I would have a deep cycle for house electronics, and electrical needs. I would have nothing on the cranking battery other than the engine.
What I did on mine was to add the stealth one charger that allows me to charge the deep discharge battery from the motor alternator. See
works very well. You connect this device between the two batteries. When the cranking battery has a voltage across its terminals of greater than 13V, the charging current is directed to the other battery. Terrific product, I use it to keep my trolling/house battery up to full charge. Does this very well.
posted 08-25-2003 11:53 PM ET (US)
No need to buy 2.....run the deep for electronics on say #2 and buy a cranking for #1.
posted 08-26-2003 12:01 AM ET (US)
That makes sense Bigshot, I just wanted a bigger deep cycle than this one.
As far as configuration, the usual 1-2-both-off switch.
posted 08-26-2003 02:15 PM ET (US)
Eric, Since you want the 2nd battery for offshore use, why not add the extra safety of a dual purpose battery? The cost difference is minimal (<$5 at Walmart) and you never know when you might need it. I carry 2 dual purpose batteries and have been glad I did on a few occasions (forgot to change the switch when night fishing). I also change which battery I run on consecutive trips to extend the life of each battery. I have at least five years on the batteries (came with boat 2 years ago and last date stamps on the batteries read '98) and both still check out perfect.
posted 08-27-2003 08:50 PM ET (US)
That makes sense Tom, and I've been thinking about one of the dual purpose batteries already.
Thanks for the replies, all.
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