For anyone that is curious...A recent thread came up about about abnormal charging from a Magnum inverter, using a Yamaha generator as the AC input. My Magnum is a Magnasine MS2812, software version 5.4, ARC version 3.010, BMK version 1.0When I started my Yamaha ef2000is this morning, output voltage 122.3 volts. AGM (automotive grade) battery bank was at 12.3v, 70 pct SOC. The Magnum is charging in bulk mode 14.4 volts and 88 amps (ac input limit set to 13 amps).A few hours later, output voltage 122.3 volts. Magnum charging in absorb mode, 14.3 volts, 60 amps (ac input limit still 13 amps). SOC 93 pctIt should switch to float shortly, I think around 95 pct?SOC is being measured by coulomb counting performed by a Magnum battery management controller (BMK)edit: oh, I should add, minimal ac load is present on the inverter. Just a television, a few chargers, various parasite loads.

Hi GordonThree,Thanks for posting this.Can you note whether the cooling fan continues to run after the Yamaha generator is shut down and the Magnum inverter is not on? Thanks in advance.

Hi Don,Sure thing. The fan was running at full speed this morning charging at 88 amps, but is barely blowing right now - very slow speed.Readout just now from the ARC: BAT Temp 89F, Transformer 134F, Transistor 105FUpdate, still in absorb mode, 25 amps charging. SOC at 97 pct. Of the 25 amps, 16 amps are going into the battery as measured at the shunt. The other nine must be for DC loads on the system.

Hi Don,The fan has shut down, but the Magnum still continues to charge the battery bank. SOC 98 pct, 22 amp output, absorb mode, 14 amps at 14.1 volts into the batteries at the shunt.

Did you happen to note the amps to the battery at 86% SOC? PT wants to know that for calculating amps per 100AH of capacity with AGMs to compare with the figure he has for Wets

I do not understand. Unless thermal issues interfere, the AGM should charge to 99% or 1% of ampere hour capacity at 14.4 volts potential. When amperage decreases to 10% of amp hour capacity of the bank, the battery should be more or less 95% charged even for the lowest Chinese grade of AGM. With a Concorde battery the percentage rises to 99%.Maybe someone can explain what the exercise is attempting to accomplish :)Thank you

Magnum inverter, Yamaha Generator | Good Sam Community

SCVJeff
Explorer
Sep 13, 2016
happycamper002 wrote:
SCVJeff wrote:
Boy, if you can't absorb tipos and let them roll off your back, your gunna have a really hard time around here...

I had been in several fora (latin plural for forum) long before even RV.net was invented.. . in fact I was one of the volunteers in the organization that offered free instructions to school kids on how to use computers.

Keep your insinuations to yourself. . . and perhaps even save you from having a heart attack.
Gee, aren't we snippy.. You just proved my point. Hopefully you'll quit griping about semantics and let this thread roll back to PT's original post subject.
BFL13
Explorer II
Sep 13, 2016
Sorry, OP, but this thread has gone to poop anyway, so never mind! :)

No fair! Mex must have taken TWO English courses instead of just the one compulsory course Engineers (the only ones who noticed that Godiva rode a horse) had to take at university. You knew who they were among the actual "English Majors" by the slide rule powder they had all over them :)
MEXICOWANDERER
Explorer
Sep 12, 2016
BFL13 wrote:
MEXICOWANDERER wrote:
The grammer police are out in force. For god's sake watch your syntax like a librarian!

I'm still waiting for Mex to correct his post about Labour Day. :)

1 May, when all the drunks interlace arms and sing "la internacionale"

As far as "proper" English is concerned, I ran into a roadblock in college...
hbski
Explorer
Sep 12, 2016
hey happycamper002,

Do you believe that a grid tie inverter can take DC current from solar panels, invert it to an alternating current output synchronized to the grid and send this power to the grid?

If yes, then why do you not believe that the Magnum MSH3012M, can do essentially the same thing?

Cheers,
hbski
happycamper002
Explorer
Sep 12, 2016
SCVJeff wrote:
Boy, if you can't absorb tipos and let them roll off your back, your gunna have a really hard time around here...

I had been in several fora (latin plural for forum) long before even RV.net was invented.. . in fact I was one of the volunteers in the organization that offered free instructions to school kids on how to use computers.

Keep your insinuations to yourself. . . and perhaps even save you from having a heart attack.
hbski
Explorer
Sep 12, 2016
hbski wrote:

T......Y......P......O

Hopefully this was not construed as "grammar police", It was merely to indicate that PT meant proprietary as almost everyone understood and that there really was no extraordinary interpretation required.
hbski
Explorer
Sep 12, 2016
happycamper002 wrote:
hbski wrote:

T......Y......P......O

This is more like malapropism (look it up). The semantics is correct and no outlandish violation of grammar syntax. . . therefore no grammar police is necessary.

Fanatical adherence to prescriptive grammar, by librarians, is not the issue, let alone typographical error.

well, except for the fact that PT already indicated that it was a typo and corrected it.
greenrvgreen
Explorer
Sep 12, 2016
I for one am more concerned about the rise of the Fanatical Librarians.

Umm. . . "typo".
SCVJeff
Explorer
Sep 12, 2016
Boy, if you can't absorb tipos and let them roll off your back, your gunna have a really hard time around here...

Not only can people not spell, Auto-correct to another word from smart phones is rampid. The ones that drive me nuts are those who have never figured out the use of a period (.) and proceed to write a novella about their problem.
happycamper002
Explorer
Sep 12, 2016
hbski wrote:

T......Y......P......O

This is more like malapropism (look it up). The semantics is correct and no outlandish violation of grammar syntax. . . therefore no grammar police is necessary.

Fanatical adherence to prescriptive grammar, by librarians, is not the issue, let alone typographical error.