[Guide] Renogy IP67 50A DC-DC Charger + MPPT (for leisure battery) -- How We Done It --

[Skyliner33]

My AMT12-2 has been disconnected for a few weeks. Will it hold the settings that were set previously. I have looked on the abelmail website and cant find any info. I cant even find the method to input the new settings now.

All I can see is the LED on the ABelmail flashes red, but not with a seemingly consisten time interval between flashes.

 

[snoop6060]

Ok, I have one of these and the wiring guide is a little weird (to me at least!). Its at the start of this thread for reference. Probably just me but hey, ho better be safe then sorry. The cables coming out of the unit are 10AWG and the wiring guide from the charger to the LB calls for 6AWG. 6AWG from the LB battery to the fuse (60A ANL), 6AWG out of the fuse and just joined to the 10AWG cable coming out of the unit. With tape . I will probably avoid the tape can I not just join the cable coming out of the unit to the cable coming from the battery with a fuse?

Ditto the starter battery connection but that calls for 4AWG cable. I have a 16mm cable from here to the battery so am using that... but still it calls to just join that to the 10AWG cable coming out of the unit after a 100A ANL fuse.

Also can I just use maxi fuses? I have those already.

 

[snoop6060]

Sorry meant midi fuses not maxi! Can’t seem to edit it.

 

[Dellmassive]

Short answer, yes, yes, yes.

Make sure you're feed cables are good enough for 60A.

Make sure ask crimped ends are super tight.

Make sure all battery connections are fused.

Use the van chassis for the ground.

 

[snoop6060]

That’s the plan. Out of interest why does it say 4 or 6 awg cable but the cables into the unit are 10awg? It’s a very weird install guide.

 

[Dellmassive]

Fatter cables for the longer runs... Fatter the better.

Less volt drop, better current carrying. Etc etc.

It can then drop down in size for the final connection.

 

[snoop6060]

Right fitted of these down the side of a 240ah seatbase battery from Roamer. All good, fits nice and tidy but space is incredibly limited. Charging at 50amps this thing gets super hot. Like almost too hot to touch. That’s getting me a little concerned. I knows it’s got a thermal cutoff but even still, it’s very close to other stuff. This gonna cause issues or do I have to knock it back to 20 or 30 amp. I potentially run a fan but there isn’t much space to mount it unless I cut a hole in the side of the seat base which doesn’t seem like a great idea

 

[Dellmassive]

Right fitted of these down the side of a 240ah seatbase battery from Roamer. All good, fits nice and tidy but space is incredibly limited. Charging at 50amps this thing gets super hot. Like almost too hot to touch. That’s getting me a little concerned. I knows it’s got a thermal cutoff but even still, it’s very close to other stuff. This gonna cause issues or do I have to knock it back to 20 or 30 amp. I potentially run a fan but there isn’t much space to mount it unless I cut a hole in the side of the seat base which doesn’t seem like a great idea

If it to hot to touch, then it's too hot.

That would imply over 60c.

And that's not good unless it's a very short duration.

So I would down rate then current to 20A or 30A.

You can change the settings via the Renogy Home App. (With the BT2 adapter)

See how you go at 30A , if it's still getting hot. Drop down to 20A.... Then look at adding additional cooling.

Or relocate the charger to somewhere where it has better airflow.

.

 

[snoop6060]

Sound yeah it’s defo too hot. I only had it running for about 30 mins and the seat isn’t even back on yet. I don’t really need it at 50amps most of the time. But might do occasionally. I’ll have a think about cooling. Dont really want to move it but will do as as a last resort.

 

[dinks66]

Sound yeah it’s defo too hot. I only had it running for about 30 mins and the seat isn’t even back on yet. I don’t really need it at 50amps most of the time. But might do occasionally. I’ll have a think about cooling. Dont really want to move it but will do as as a last resort.

Well finally got round to fitting mine after all the good advice from Delmassive which I am very grateful for. I too have temperature anxiety at anything over 30 amp charge rate. It seems to get really hot at anything over this. I have also just noticed from the photos that I have connected my Victron ac charger up incorrectly which I will put right before I use it. I am now waiting for a dc-dc charger for my Ecoflow Delta 2 to finish off the installation. One thing I have learned is that there ain’t much room under the passenger seat !!

 

[snoop6060]

One final question… hopefully. I gave this a test today and it charged my Roamer battery to 13.3v and then stopped charging (alternator). Though the Roamer bms is only saying it’s 79% charged. Any ideas why it stopped? I gather I need to tweak something. It’s on the default lithium settings.

 

[Dellmassive]

One final question… hopefully. I gave this a test today and it charged my Roamer battery to 13.3v and then stopped charging (alternator). Though the Roamer bms is only saying it’s 79% charged. Any ideas why it stopped? I gather I need to tweak something. It’s on the default lithium settings.

Could be the Roamer cutting out the charge...

Ie cell over voltage etc.

Or could be the Renogy hitting a Max bulk charged time limit. Etc etc.

You will need to I check and screenshot the Roamer app and Renogy app to tell what's going on.

 

[snoop6060]

Could be the Roamer cutting out the charge...

Ie cell over voltage etc.

Or could be the Renogy hitting a Max bulk charged time limit. Etc etc.

You will need to I check and screenshot the Roamer app and Renogy app to tell what's going on.

Pretty sure it’s the Renogy cutting as the red alternator light goes out. Quite possibly due to the voltage dropping from there? Dunno why though since it was working fine up to that point. Maybe an hour-90mins. I don’t have a screenshot of the Renogy but will post one.

 

[rod_vw]

FYI, I have received this from Roamer this evening...

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