Current is your issue more than voltage. The Yamaha 70hp only outputs 16A, the Redarc pulls 12A from your alternator (not your house battery) which only leaves 4 Amps to run everything else. Voltage would come into play if your wires are maybe too small. I would recommend changing to a smaller DCDC charger that also has an Ignition feed wire. I believe Victron may have a 10A model with Ignition detection. I understand that the Redarc needs a certain Voltage level to turn on, but the current issue is what keeps making the voltage drop below 13.3V or whatever the Redarc needs. Good luck with it all, must be frustrating when you can’t maintain charge in your batteries when travelling long distances up at Limmen Bight etc. love your videos👍
Further to my last comment, HDS7 sounders draw 1.7A each. So with the 12A being drawn by the DCDC charger, and the 3.4A by your sounders, you have 0.6A to maintain charge to your house battery.
Thanks Daryl the red arc is the lowest voltage one they make it’s actually built for running in a trailer and can run off just 12 pin plug and that’s correct about the amps it’s a shame that Yamaha don’t up the charge output on the smaller outboards as more electronics are run off boats now that ever Thanks for watching
As I charge every night after fishing it’s fine for me but a system that can charge the second battery would just be nice to have in a 70 hp outboard to at least get a few days camping without taking a generator would be ideal Thanks for the great feedback these comments help a lot people with issues that don’t quite understand it all and why they encounter problems
Have you checked the amps the 70 is putting out at different revs rather than reading the volts? I don't have a DCDC charger only the Blue Sea 7650 automatic charging relay. Just connects and disconnects to save the start battery. Its only as good as the amount of amps the rectifier will charge though. I suppose its the same as the Redarc...you can't make power from mid air, it has to have a source...a larger rectifier/alternator? You can have a larger capacity battery which will last longer but you still need to find amps from somewhere to put back in.
That’s the exact issue I was referring to so your using a vsr for the task that is my next move to see if vsr can supply the amps directly instead of a dcdc charger To be continued Thanks for the input and I’ll do some homework on the blue sea 7650
Lovely Ep and troubleshooting, The specks say 15amps output for a 70. I've never run anything off my 60 yam 4/ only a sounder and GPS but souder gets turned off just before I anchor. Hope you get it sorted.
It not a issue for me really as I usually always pull my boat from water and charge it but a fix for everyone would be good to know and a more bush proof system would be nice 👍
Why is the alternator only outputting such low voltage it should be outputting more than 13v surely? I haven’t paid much attention to mine but I know the Garmins are showing over 14v when I am on the plane (Suzuki 140). I will pay more attention when its at idle next run.
Cheers for the video, hopefully my 200hp will be okay with charging the system in my boat just getting ideas not sure weather to go vuctron, redarc or bep VSR system cheers
I run a 24volt 100a/h lithium get 3 days with fridge minnkota without any charge minimum , barely ever use my onboard charger on a 5.4m boat , i had 2 yamaha 60s they only put out about 16amp from memory a good sounder killed them batteries easy
I'm told my Yamaha F60 will output a maximum of 8 Amps of charge ( that's about 100Watts ) so that's why it cannot build a charge. And I'm trying to find out how much power my electronics uses. I want to G\go Lithium and keep the 2 batteries separate. Had to be towed back to ramp last week with a flat starter battery
Current is your issue more than voltage. The Yamaha 70hp only outputs 16A, the Redarc pulls 12A from your alternator (not your house battery) which only leaves 4 Amps to run everything else. Voltage would come into play if your wires are maybe too small. I would recommend changing to a smaller DCDC charger that also has an Ignition feed wire. I believe Victron may have a 10A model with Ignition detection. I understand that the Redarc needs a certain Voltage level to turn on, but the current issue is what keeps making the voltage drop below 13.3V or whatever the Redarc needs. Good luck with it all, must be frustrating when you can’t maintain charge in your batteries when travelling long distances up at Limmen Bight etc. love your videos👍
Further to my last comment, HDS7 sounders draw 1.7A each. So with the 12A being drawn by the DCDC charger, and the 3.4A by your sounders, you have 0.6A to maintain charge to your house battery.
Thanks Daryl the red arc is the lowest voltage one they make it’s actually built for running in a trailer and can run off just 12 pin plug and that’s correct about the amps it’s a shame that Yamaha don’t up the charge output on the smaller outboards as more electronics are run off boats now that ever
Thanks for watching
As I charge every night after fishing it’s fine for me but a system that can charge the second battery would just be nice to have in a 70 hp outboard to at least get a few days camping without taking a generator would be ideal
Thanks for the great feedback these comments help a lot people with issues that don’t quite understand it all and why they encounter problems
Don’t forget the jlaudio stereo full noise after a few tins too 😂👍
Have you checked the amps the 70 is putting out at different revs rather than reading the volts? I don't have a DCDC charger only the Blue Sea 7650 automatic charging relay. Just connects and disconnects to save the start battery. Its only as good as the amount of amps the rectifier will charge though. I suppose its the same as the Redarc...you can't make power from mid air, it has to have a source...a larger rectifier/alternator? You can have a larger capacity battery which will last longer but you still need to find amps from somewhere to put back in.
That’s the exact issue I was referring to so your using a vsr for the task that is my next move to see if vsr can supply the amps directly instead of a dcdc charger
To be continued
Thanks for the input and I’ll do some homework on the blue sea 7650
Lovely Ep and troubleshooting, The specks say 15amps output for a 70. I've never run anything off my 60 yam 4/ only a sounder and GPS but souder gets turned off just before I anchor. Hope you get it sorted.
It not a issue for me really as I usually always pull my boat from water and charge it but a fix for everyone would be good to know and a more bush proof system would be nice 👍
@@thumburnfishing yes true
Why is the alternator only outputting such low voltage it should be outputting more than 13v surely? I haven’t paid much attention to mine but I know the Garmins are showing over 14v when I am on the plane (Suzuki 140). I will pay more attention when its at idle next run.
Yeah engine over 70hp pump heaps voltage my 140 Suzuki used to hit 15v at times
This video only reflects the 60/70 Yamaha 4 strokes
My Suzuki ,2018 model
70hp. idle runs at 14.5volts.
Seems very low
Cheers for the video, hopefully my 200hp will be okay with charging the system in my boat just getting ideas not sure weather to go vuctron, redarc or bep VSR system cheers
Big engines over 70hp have plenty amperage so dc dc will be fine I have 2x150 Hondas and the charge awesome
@@thumburnfishing sweet , yer just had a look at the specs of a 200 yammie and can push 22 Amps on idle and up to 50a on full revs
You nailed it. Go Lithium.... they charge quicker and they have way more useable power. :)
I had a lithium cheap one and it was connected to the 20 amp dc dc but was cheap lithium and filled up with water
I run a 24volt 100a/h lithium get 3 days with fridge minnkota without any charge minimum , barely ever use my onboard charger on a 5.4m boat , i had 2 yamaha 60s they only put out about 16amp from memory a good sounder killed them batteries easy
Yep correct 👍 thanks for watching the video and making efforts to reply
I'm told my Yamaha F60 will output a maximum of 8 Amps of charge ( that's about 100Watts ) so that's why it cannot build a charge. And I'm trying to find out how much power my electronics uses. I want to G\go Lithium and keep the 2 batteries separate. Had to be towed back to ramp last week with a flat starter battery
Exactly as I run a fridge full time when fishing that’s why it’s important to charge regularly keep everything healthy