Duel Battery & Charging Setup?

[Wario]

I have a Quiny 470 Te with a Yammy 4s 70Hp + a MinKota iPilot lecky. Both have seperate batteries. I'm wanting to join them (the batteries) together so that the lecky battery gets charged when the Yammy is running & that saves me from having to charge the lecky battery separately etc. I'm sure there are lots of you with a similar setup.

I have the same in my Patrol (2 batteries - one front & one in the rear to run the fridge/invertor/accessories etc). In the Patrol I used a Redarc BCDC1220 charging system that monitors both batteries & directs the charge to where it's required (see here: http://redarc.com.au/static/files/3595_BCDC1220_brochure_Nov_2010_101118__.pdf).

But I'm thinking that this is probably overkill for the boat (also they - the BCDC1220's - are NOT cheap @ $400 + the wiring etc).

SO......?? What setup's have you guys used? Which charger? How is it wired etc? Does it do the job of keeping both fully charged.

Any pictures would be appreciated.

Thanks, Wario

[Tassiebream]

I have a BEP Voltage Sensitive Battery Relay set up in my boat.
It chargers the batteries using the motors alternator while the motor is running.
Keeps them topped up when moving.
And also a on board charger as well.

[Wario]

This is probably the easiest & cheapest.....http://www.ebay.com.au/itm/110644296385?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649

[leachy]

You need to wire them in parallel. This means cable from negative to negative and positive to positive. Just connect the alternator charging wires to one batter, assuming, here that it has a rectifier or DC coming out of it. Depending on what current your alternator can output there is a a solar regulator from Jaycar that has a charging cycle. It works well.

[forsterfisho]

Is it really worth it with a 70hp motor?

I enquired when I had my 60hp motor wired up with the rest of my new boat and the guys at the shop said they could; but the alternator on the smaller motors wasn't really upto topping up both batteries. Easier and more effecient just to top up the cranking battery via alternator and charge via wall socket charger the deep cycle.

Basically if you had a 115 up they said it'd be worthwhile, otherwise just keep topping up the crank battery and manually charge the electric.

[Tassiebream]

Is it really worth it with a 70hp motor?

I enquired when I had my 60hp motor wired up with the rest of my new boat and the guys at the shop said they could; but the alternator on the smaller motors wasn't really upto topping up both batteries. Easier and more effecient just to top up the cranking battery via alternator and charge via wall socket charger the deep cycle.

Basically if you had a 115 up they said it'd be worthwhile, otherwise just keep topping up the crank battery and manually charge the electric.

Yeh mine is a 115hp and the other a 150hp

[Tassiebream]

As Forsterfisho said just charge them back at camp after each outing if needed.
And to make it easier a couple of on board chargers.
Plug em in and that's it.