[RE-wrenches] Magnum 4448 PAE whimpy charge rate.

[Maverick Brown]

John

I would try the Victron Cerbo GX for remote control of stuff. It has plethora of ports (I/O and temperature) and they can connect to lots of different devices, especially other Victron items like inverters and charge controllers and smart shunts (that one I’d also add to the Cerbo right away for SOC). 


1. Cerbo GX
2. SmartShunt 500 amp Battery Monitor (Bluetooth)
3. Temperature sensor BMV-702/712 for the shunt. 
4. VE.direct cable of correct length to go from Cerbo to SmartShunt


Cerbo GX connects to the internet via wired or wireless internet ports provided.  
They have a cellular modem add on as well. 

Victron offers a VRM virtual remote monitoring via the web. 




Maverick Brown
Off-Grid Solar Commander since 2006
Maverick Solar Enterprises, Inc.
 • Solar Commander Remote Power
 • SunFlow Systems Cathodic Protection 
maverick at mavericksolar.com
512-460-9825


> On Dec 6, 2023, at 8:08 PM, John Blittersdorf via RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote:
> 
> 
> I have noticed on several Magnum Installations that the charge rate is low compared to the inverter rated output.  Typically I would assume the charge rate should be up to about 70 to 80 % of the inverter capacity, but I am getting only about 1400 watts (26 amps DC) from it with a 14kw generator.  Is there some setting I am missing that would limit it other than the charge %.  I know of one system where they added a 2nd Magnum inverter and then had problems with them working together consistently.  I have used the 8 kilowatt Radians for any off grid with significant loads and battery capacity and easily get 6000 charging watts from a large generator. I also needed remote control of the generator (Generac EcoGen 15 kw so a quick inexpensive but clunky solution I came up with was to add an old (2003 vintage) used MX-60 to the system purely to use the Aux relay with a used HUB and old but good Mate3.  Works perfectly giving us AGS start and stop voltage settings and basic battery voltage graph. I would be interested in other ways to remote control generators with non Outback inverters. FlexNet DC?
> 
> John Blittersdorf
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