Battery

[dadstinny]

Hi all, just got my new to me Yalta Craft 1600 and just sorting out the wiring.

First the basics, it has an old Suzuki 60hp two stroke with electric trim and tilt and the dumb question of the day does the battery get charged of the motor or do I need to remove it and recharge it out of the boat after each use?

Secondly it came with just a standard car battery and I am going to replace it with a deep cycle battery and a battery box what amp hour battery is best to run the electric start, sounder (non colour), cd player, nav lights and 27 meg radio. I was thinking 100amp hour might last me one or two days of use?

Thanks!

[tunaticer]

Do not use a deep cycle battery as your cranking battery, they are not designed for intense short term discharges, buy a cranking battery that is suitable.
If there are cables coming from the rectifier on your motor to the battery and the rectifier works it should be charging your battery as you drive the boat. Depending on the duration of your drives and the number of times you crank the motor, the charge system should be adequate to keep the battery charged. Lots of short runs with a crank every run could be a different matter, but usually 15 minutes of running will replace a normal crank start draw.
Check online for your motor specs and what current supply is needed minimum for cranking. I generally run a battery with 25-30% more CCA than is required.
I would be running two batteries, one cranking and either your current one or a small deep cycle as the second battery for running the electrics you have.

[deckie]

Howdy. Somewhat depends on your plans going fwd, also if its isolated country u frequent. i.e. anything else 12v you may want to run later. The only thing that you mention having that will soak up much current is the cd player, esp if u have a sep amp tucked away. If you're wary of that or arnt a fan of doof doof then the sounder, navs, 2way etc dont require a great deal and a good marine crank being charged off the donk will look after all those adequatety. Check cranking amps specs, guess maybe 550 is way plenty. You can also get a crank batt that has a reserve capacity on it...supercharge maybe ??? They make a seamaster too which has a pretty good rep as a cranking battery.
If u dont plan on adding much i'd just replace with a nice new quality marine batt at this pt and have a real good check or even replace the cables/connections etc and get the cables/lugs done by a pro with proper swage. If u keep that new batt in tip top nick it'll last yrs and yrs, especially if u keep it/terminals clean. A 100Ahr DC tho is bigtime overkill for what u describe and they're hellishly heavy mate, up around 30kg. The stuff u run just doesnt justify that sort of reserve capactiy...i reckon more important u get a good cranking batt to start with as u can always carry a backup batt later if u want to run more stuff or for longer. No need to get fancy.
If you;re in a position to spend some extra coin to get a quality single that might last even longer you could go up to a spiral wound agm like an optima bluetop which will more than fire it up, accept a charge easy out there, flatten vv slow compared to other types, not too hefty, plus has about a 50Ahr reserve which is wayyy big enuff for one or two days of use with what u have currently...but they're pricey. Good but upmarket option if u'd prefer just a single. Supercharge allrounder might be a great compromise.

Its not an Amp hour rating you need to be looking at, its the cranking capacity to go with your suzi. In terms of charging yes the donk will/should charge it whilst out there but you should maintain the charge at home...makes them last plus keeps them in good nick ready to go. Short runs are battery killers so stretch its legs every now and then.

[dadstinny]

Hi all, now my boat is running its time to clean up the electrics and get my sounder working.....

I got this battery for cranking -

http://www.centurybatteries.com.au/s...tteries/ID-203

And I am now going to get a deep cycle to run the accesories as I want to keep the cranking and accessories separate.

I am looking to get one of these and a 70amp hour battery roughly to power my electrics.

http://www.bcf.com.au/online-store/p...15#Description

Are there any thoughts on this battery box and its charger?

Thanks!

[honda900]

Dadstinny,

dont bother with the battery box, get yourself a VSR module, when one battery is charges to a certain voltage, the switch automatically charges your second battery, if your first battery drops below the required level, it changes back and charges the first battery.

BEP dual VSR Module and a battery switch.

Regards
HOnda.

[cormorant]

As above.

Don't buy anything electrical you rely on that is not marine related. Other non marine stuff just falls to bits