Has anyone used the Kisae DMT1250 Abso 50A DC-DC Battery Charger with MPPT?

[Sgt Raven]

I took a chance and have ordered one. Has anyone tried the KISAE DMT1250 Abso 50A DC-DC Battery Charger with MPPT. It looks to have better specs than the Renogy DCC50S. It can use 24v solar panels vs the 12v panel limit of the Renogy and it looks like it can go 50 amps on either side vs the 25 amp limit of the Renogy. I ordered it here... https://www.donrowe.com/KISAE-DMT1250-Abso-50A-DC-DC-Battery-Charger-p/dmt1250.htm. and it's the same price as the DCC50S is currently on Amazon.

 

[chevymike]

Definitely curious as this looks to be exactly what I am looking for, since I have a set of 24v panels and the Renogy doesn't support them. Also this has a display which is nice and the higher charge regardless of input source.

 

[joehammer]

I was also looking at this as a alternative to the DCC50S but I could not find much information about it.

 

[Stupid Monkey]

i have the 30A version - works exactly as advertised for me.
I have 2 x 315-390w panels into it, 2 of these http://www.jasolar.com/html/en/2018/en_bmpd/2.html

 

[Sgt Raven]

i have the 30A version - works exactly as advertised for me.
I have 2 x 315-390w panels into it, 2 of these http://www.jasolar.com/html/en/2018/en_bmpd/2.html

Did you use 1/4" (M6) ring terminals to hook up the cables? Did you get the extra monitor and/or temp cable?
I like how you can over provision the solar and it just throws away the extra wattage. That way in less than optimum conditions you get more solar power. I haven't seen another SCC come out and say that in their specs.

 

[Stupid Monkey]

I used copper lugs but had to file the edges a little to fit in the available space.

The EP Tracer MPPT will do over wattage / but like the ASBO not over voltage.

 

[tim0shel]

Any updates?

 

[Mex Rider]

Did you use 1/4" (M6) ring terminals to hook up the cables? Did you get the extra monitor and/or temp cable?
I like how you can over provision the solar and it just throws away the extra wattage. That way in less than optimum conditions you get more solar power. I haven't seen another SCC come out and say that in their specs.

I bought the DMT125O, Remote, and temp. Sensor. The manual tells you if your batteries are lithium DONT USE TEMP SENSOR!!! Money down the drain...too bad that info is not inthe sales literature.

 

[Sgt Raven]

I bought the DMT125O, Remote, and temp. Sensor. The manual tells you if your batteries are lithium DONT USE TEMP SENSOR!!! Money down the drain...too bad that info is not inthe sales literature.

I read about about the remote monitor and temp sensor someplace online and didn't think I needed them.
Don't remember where I saw it, but it was online someplace.

As for updates, I've kinda stalled out with the virus and all. Still need to get fuses for the battery hookups and solar panels.
Then get it all mounted in my truck.

 

[chevymike]

The manual is online, on the vendor site. I recall reading about not using the temp probe in there.

 

[Mex Rider]

The manual is online, on the vendor site. I recall reading about not using the temp probe in there.

Some of us are better than others about doing all of our homework. As far as the remote goes, for me that is a good investment alongside the Victron 712 battery condition meter. After living on boats I value quick access to that info.

 

[Mex Rider]

i have the 30A version - works exactly as advertised for me.
I have 2 x 315-390w panels into it, 2 of these http://www.jasolar.com/html/en/2018/en_bmpd/2.html

At this point I have mine connected to the van battery and chasis ground but I don't have my solar panels yet, nor have I finished with my lithium cells so do you think it is safe to power it up to program my lithium settings?

 

[Sgt Raven]

At this point I have mine connected to the van battery and chasis ground but I don't have my solar panels yet, nor have I finished with my lithium cells so do you think it is safe to power it up to program my lithium settings?

Yeah, I think so. I connected mine to my "House" battery and made my changes to the settings. The On/Off switch is kinda hard to reach. A new pencil with a good eraser helps. It gets in there, better than my fat fingers. Keep that in mind, in how/where you mount it, too.

 

[Mex Rider]

Thanks, didn't want to burn anything out without the house batteries for the van battery charge to go to....

 

[Sgt Raven]

Thanks, didn't want to burn anything out without the house batteries for the van battery charge to go to....

You don't need the van running to make the settings. You could switch the battery connections to the house battery position, to make the settings, too. That is where I had my battery connected to mine. The big thing, is don't hook solar panels to a SCC without a battery connected to it.

 

[Mex Rider]

I don't have house batteries yet but I would think with nothing to charge not much drain would occur on the van batteries just doing settings... or am I mistaken?

 

[Sgt Raven]

I don't have house batteries yet but I would think with nothing to charge not much drain would occur on the van batteries just doing settings... or am I mistaken?

My SWAG is it would be OK, at least as long as the van isn't running. Not sure about having it turned on without a house battery connection and feeding altenator current to it. That might be similar to connecting solar panels without a battery, first.

If you want to be extra careful, move the starting battery connection, on the charger, to the house battery position. They're real close together and I would think you'd have enough slack in them to do so. It's only two screws and a little time. I would do the same, if I was to connect solar panels to it, without a house battery. For testing/setting the solar settings.

The other thing you could do, is connect a old LA battery as the house battery. If you have an extra hanging around not being used. If I did this, I'd follow the manual when picking the Battery AH rating.

One other thing, download a PDF of the manual and print it out on 8.5" x 10". It makes it much easier to read and follow along. I made up a binder with it inside. It also allows you to put the setting flow chart out as one big one. I wish I could get a PDF of the flow chart as one page and have it printed on a 11" x 17" page as a wall poster for setting it up. I think I'm going to email Kisae again and ask them to do just that.

Anyone wanting a PDF of the manual or spec sheet, you can download it here. It's under related documents.

https://www.donrowe.com/KISAE-DMT1250-Abso-50A-DC-DC-Battery-Charger-p/dmt1250.htm

 

[Mex Rider]

My SWAG is it would be OK, at least as long as the van isn't running. Not sure about having it turned on without a house battery connection and feeding altenator current to it. That might be similar to connecting solar panels without a battery, first.

If you want to be extra careful, move the starting battery connection, on the charger, to the house battery position. They're real close together and I would think you'd have enough slack in them to do so. It's only two screws and a little time. I would do the same, if I was to connect solar panels to it, without a house battery. For testing/setting the solar settings.

The other thing you could do, is connect a old LA battery as the house battery. If you have an extra hanging around not being used. If I did this, I'd follow the manual when picking the Battery AH rating.

One other thing, download a PDF of the manual and print it out on 8.5" x 10". It makes it much easier to read and follow along. I made up a binder with it inside. It also allows you to put the setting flow chart out as one big one. I wish I could get a PDF of the flow chart as one page and have it printed on a 11" x 17" page as a wall poster for setting it up. I think I'm going to email Kisae again and ask them to do just that.

Anyone wanting a PDF of the manual or spec sheet, you can download it here. It's under related documents.

https://www.donrowe.com/KISAE-DMT1250-Abso-50A-DC-DC-Battery-Charger-p/dmt1250.htm

Thanks for your good thoughts...moving the connections is a great idea. And thanks for the link. A poster would be awsome!

 

[Directshort]

I am pretty sure the Kisae get's it's power to run itself from the house battery only but could be wrong still reading the manual. Makes sense so as not to kill the vehicle battery.
As for accessing that little on/off button that is recessed up under the cover I took a Dremel tool and routed a bigger finger hole in case I need to turn it off quickly in an emergency without looking for a pencil lol.

 

[Mex Rider]

That makes good sense and I decided to stop being impatient while wait for bits and pieces from Amazon and will do the settings when "everything" is in place. I have a solar panel disconnect switch next to the Kisae and a breaker close between the Kisae and the house batteries, so I would just turn off the two switches if things were in an "emergency" state, but I may use my dremel to make the on/off switch more usable...good idea.