Help with Renogy 40A DC to DC charger

[tz1280]

I have installed a Renogy 40A DC to DC charger in my Gen 3 Prius. I’ve put a 60 amp circuit breaker on the 2 AWG positive cable from the starter to charger. The charger to 270ah LIFEPo4 (its what I had after not using in another install) cable is 8 AWG. The charger is turned on and off with the sense lead connected to cigarette lighter socket. The “starter“ (the motor is actually started by the high voltage traction battery) battery is a Full River 55ah

it all works ok except the 60 amp circuit breaker trips after a few minutes when I use the full 40 amps without current limiting. Can anybody tell me why the 60 amp breaker might be tripping?

 

[rodrick]

substandard Amazon breaker?

 

[grizzzman]

substandard Amazon breaker?

I bought a 300 amp breaker off of amazon that trips around 60 amps.

 

[tz1280]

substandard Amazon breaker?

yeah. I guess it‘s the breaker. I bought it from here. They’re renowned for selling crap.
https://www.jaycar.com.au/60a-32vdc...c020bac53ca&sort=relevance&searchText=Breaker
..and I got ripped off as well. $20 cheaper on Amazon.
https://www.amazon.com.au/Automobil...n-Conductivity-Replacement/dp/B0C2CKMGWG?th=1

I bought a 300 amp breaker off of amazon that trips around 60 amps.

So I need at least 300 amp.

 

[grizzzman]

To be fair when I set up my Renolgy 40 amp DC to DC charger at 14.0 volts from the truck it's amps in was 50 amps and the output at 14.7 at 39.6 amps output

 

[Renogy Solar]

We are sorry to hear about your confusion regarding the use of our products. If possible, could you provide us with a diagram of the wiring of your system so that we can identify the problem?

 

[tz1280]

We are sorry to hear about your confusion regarding the use of our products. If possible, could you provide us with a diagram of the wiring of your system so that we can identify the problem?

Thank you Renogy. There’s no problem, at least charging at 20 amps. I’ve bought 2 of your ANL 60 amp fuses from Amazon - one to replace the circuit breaker and the other with a 50 amp fuse between charger and house battery.

 

[Renogy Solar]

Perhaps it would be more helpful if you could draw a picture of the way you are wired and show it to us to help us identify the problem
At the moment, from your description, it seems that a 60A fuse is not sufficient for your needs and we suggest that you replace it with a 65A or 70A fuse.

 

[mikefitz]

To Renogy Solar.
Page 9 of the DCC 12 12 40 manual specifies a 60 amp ANL fuse.
The issue discussed was due to a low cost faulty breaker, resolved by fitting a 60 amp fuse.

 

[tz1280]

Perhaps it would be more helpful if you could draw a picture of the way you are wired and show it to us to help us identify the problem
At the moment, from your description, it seems that a 60A fuse is not sufficient for your needs and we suggest that you replace it with a 65A or 70A fuse.

Thanks Renogy. There’s no problem. I’ve installed the 60 amp ANL fuse in place of 60 amp circuit breaker. It now works fine on 40 amps but 20 amps is sufficient so are still using the current limiter, as I don’t have a refrigerator yet and my needs are modest. I‘ll be reinstalling the 270ah slimeline LiFePo4 house batteries very close to the starter battery with far shorter cable runs in the space where the spare tire should be.

Just to check. With my 2 x 135ah generic LiFePo4 the dip switches should be as follows:

1: off
2: on
3: on
4: on
5: off

 

[Renogy Solar]

Thanks Renogy. There’s no problem. I’ve installed the 60 amp ANL fuse in place of 60 amp circuit breaker. It now works fine on 40 amps but 20 amps is sufficient so are still using the current limiter, as I don’t have a refrigerator yet and my needs are modest. I‘ll be reinstalling the 270ah slimeline LiFePo4 house batteries very close to the starter battery with far shorter cable runs in the space where the spare tire should be.

Just to check. With my 2 x 135ah generic LiFePo4 the dip switches should be as follows:

1: off
2: on
3: on
4: on
5: off

Dear customer，
We have received your feedback.

Thank you for contacting Renogy.

For solving your problems more timely and efficiently, we suggest you can submit a case through our Help Center Portal (links listed below for specific locations）for help. If you have previously submitted a case which has not been replied, please provide us with the case number so that we can inform the customer service to solve it for you as soon as possible.

https://renogy.force.com/helpcenter/s/contactsupport (USA)
https://renogy.force.com/helpcenterau/s/casesubmit (Australia)
https://renogy.force.com/helpcenterca/s/contactsupport (Canada)
https://renogy.force.com/helpcenteruk/s/contactsupport (UK)

 

[Android4life]

Dear customer，
We have received your feedback.

Thank you for contacting Renogy.

For solving your problems more timely and efficiently, we suggest you can submit a case through our Help Center Portal (links listed below for specific locations）for help. If you have previously submitted a case which has not been replied, please provide us with the case number so that we can inform the customer service to solve it for you as soon as possible.

https://renogy.force.com/helpcenter/s/contactsupport (USA)
https://renogy.force.com/helpcenterau/s/casesubmit (Australia)
https://renogy.force.com/helpcenterca/s/contactsupport (Canada)
https://renogy.force.com/helpcenteruk/s/contactsupport (UK)

Why bother being on here with lame canned responses and not really even reading the post?

 

[grizzzman]

Thanks Renogy. There’s no problem. I’ve installed the 60 amp ANL fuse in place of 60 amp circuit breaker. It now works fine on 40 amps but 20 amps is sufficient so are still using the current limiter, as I don’t have a refrigerator yet and my needs are modest. I‘ll be reinstalling the 270ah slimeline LiFePo4 house batteries very close to the starter battery with far shorter cable runs in the space where the spare tire should be.

Just to check. With my 2 x 135ah generic LiFePo4 the dip switches should be as follows:

1: off
2: on
3: on
4: on
5: off

To answer your question yes.