Second Battery Connect to DF175

[tudunka]

Hi All,

I have a DF175 that the service manuals says I can connect a secondary -battery for direct charge from the electrical system of the outboard.

I have a Perko battery swtich on my boat and I've read that if I put the switch in the "All" that the charging system from the OB will charge both batteries. I don't have a meter on either of the batteries so I don't know this is actually happening.

So two questions:

One - So, If I have the Perko with the Off-1-All-2 type of switch and is it charging both and then do I need to NOT connect the second battery to the OB?

Two - Can anyone share how to connect the secondary battery to the DF175 OB? Is there a Youtube on this?

Thanks Everyone !!!

Andy

[Harper]

Recommend you read both of these threads:

http://www.suzukioutboardforum.com/s...tery-lead.html

http://www.suzukioutboardforum.com/s...r-harness.html

and where in south central Texas?

[wilbur1]

Harper. why cant you just run the second battery in parallel to the first. Have all leads on the first bat. and just the jumpers to the second? Would this not work?

[Moonlighter]

Because if the first battery fails, it then takes out the other one.

Lets say you do it that way and something in the boat is making a big drain on the batteries. Connectd in parrallel, you then risk both batteries being run down.

Many of us run twin battry setups on a single motor - one battery dedicated as a start battery, the other as a house battery that runs every other electrical item on the boat.

In my case, with no secondary charging cable, I use a BEP dual battery VSR cluster to link the batteries. When the start battery is fully charged by the engine, the VSR opens the link allowing both batteries to get charged. When the engine is stopped, almost immediately the VSR automatically cuts the link and they are separated - thus preventing both batteries being flattened by something on the house circuit.

This system also has the advantage of preventing electrical spikes (eg when the engine is started) from damaging sensitive and expensive electronics, and it also stops annoying things happening such as GPS chartplotters turning themselves off when motors are started due to voltage drops below their thresholds.

My BEP system also has a switch that allows both batteries to be connected in parrallel if one fails eg the start battery fails then the motor can be started from the house battery. Google BEP dual charging Quad cluster and you should find it.

Im pretty sure you can achieve much the same thing with the secondary charging cable - both batteries are kept charged and separated to avoid a failure in one, becoming a failure in both.

[redlowrey]

Me being a tight arse, start on two then just switch one off when fishing.

[tudunka]

Recommend you read both of these threads:

http://www.suzukioutboardforum.com/s...tery-lead.html

http://www.suzukioutboardforum.com/s...r-harness.html

and where in south central Texas?

Hi Harper,

Thanks for the links - very helpful. I live in Boerne Texas, just NW of San Antonio.

I'm getting ready to head out to Lake Buchanan this next week and making sure both batteries are up to par.

Where did you get the images from? Is there a manual or site that I can get this from? I have the Service Manual, but it doesn't break it down like the images you shared.

Thanks again for sharing.

Andy

[ChrigelKarrer]

Does your DF175 does not have a secondary charge cable?
The best way (and without inserting a additional weak point like charging devices/battery separators/etc) to solve our problem would be to pull a second cable going to the second battery.
The second battery will feed all the non engine related thingies.

The best way for the PERKO would be 3 PERKO's with ON-OFF positions
PERKO 1: Input from engine battery cable, pole ON goes to engine battery
PERKO 2: Input from secondary charging cable pole ON goes to house battery
PERKO 3: Input pole goes to battery 1 and pol ON goes to house battery, switching tis one to ON, then it interconnects battery one and battery two

When you use your boat just switch the 2 PERKO's to ON and all works
If one battery fail then switch PERKO 3 to ON and you have both batteries connected. I use a non Perko battery switch with a key to do that to avoid that someone switch on also the interconnect switch for normal use.

There are several other brands of batterie switches on tha market and they are considerable less expensive than PERKO and they work just as fine.

Chris
Chris

[Harper]

I live in Boerne Texas, just NW of San Antonio

Well hi, neighbor. Very familiar with Boerne. I live 17 miles west of Fredericksburg. Mailing address in Harper, hence the username.
Never been on the fresh water lakes. Haul the boat to Port Aransas all the time.

The pages I posted are from the outboard setup instructions. I can post the entire manual here if you want it (I think).

Mike

[Harper]

Does your DF175 does not have a secondary charge cable?
The best way (and without inserting a additional weak point like charging devices/battery separators/etc) to solve our problem would be to pull a second cable going to the second battery.
The second battery will feed all the non engine related thingies.

The best way for the PERKO would be 3 PERKO's with ON-OFF positions
PERKO 1: Input from engine battery cable, pole ON goes to engine battery
PERKO 2: Input from secondary charging cable pole ON goes to house battery
PERKO 3: Input pole goes to battery 1 and pol ON goes to house battery, switching tis one to ON, then it interconnects battery one and battery two

When you use your boat just switch the 2 PERKO's to ON and all works
If one battery fail then switch PERKO 3 to ON and you have both batteries connected. I use a non Perko battery switch with a key to do that to avoid that someone switch on also the interconnect switch for normal use.

There are several other brands of batterie switches on tha market and they are considerable less expensive than PERKO and they work just as fine.

Chris
Chris

Not sure why you'd install three separate switches to do what you describe when there are switches available to do exactly what you decribe with just one unit.

[ChrigelKarrer]

Because it avoids to switch the battery switch to the wrong position. Simplicity!
I have seen much more customers putting always a 1-2-All Perko in the ALL position than you may expect.

On someones own boat this can be/may/is not be a big problem, but if you have "captains" who use it without your presence then they mess the position up.

Chris

[Harper]

Haha...okay. Point taken. NO "captain" uses my boat but me.

[ChrigelKarrer]

Yours not, mines yes, but not often as i hate when my captain goes out alone with the customers.
As i wrote,
i rigged about 50 boats and in about 40 cases the owners where not able to use the battery switches the right way.
So i started to use the 2 on-off switch and a third key operated switch to put them in parallel and told them that they get electrocuted if the use the key with full batteries.
Obviously not true, but worked perfectly .... Problem solved ... :-)

We had problems with a customer who every other day drained the battery of his RIO 700 with a carburated Mercruiser 200-300 hp gas inboard.
The only way to start this sucker was to fully accelerate twice and the turn the key. Any other way of starting lead to a flooded engine, then they cranked until the batteries where dead.
Then they called us and we had to rescue him with a battery booster.
On the end the sold the boat and got 150HO Suzuki outboards, problem solved ...

Chris

[tudunka]

Well hi, neighbor. Very familiar with Boerne. I live 17 miles west of Fredericksburg. Mailing address in Harper, hence the username.
Never been on the fresh water lakes. Haul the boat to Port Aransas all the time.

The pages I posted are from the outboard setup instructions. I can post the entire manual here if you want it (I think).

Mike

Hi Mike,

Yeah, been in Boerne for about 30yrs now and I do fresh water mostly and I have two lakes within 30 minutes each way from my house.

As for the setup of the OB, if that wouldn't be so much trouble, I'd love a copy if you don't mind.

Thanks,

Andy

[Harper]

Andy, PM me your email and I'll send it to you. I've tried four times and for some reason cannot upload the file to the forum.