Magnum inverter, Yamaha Generator

CA Traveler wrote:

GordonThree wrote:
UGH what a pain in the arse it is not being able to use the percent sign. I really need to stop using rv.net

X2

Use a different portal or change the URL to https:// and then % signs are happy.

100% thank you for the tip on using https. Seems some of the sites internal links switch me back to http though. I'll try to get in the habit of using a different portal

GordonThree wrote:
UGH what a pain in the arse it is not being able to use the percent sign. I really need to stop using rv.net

X2

Use a different portal or change the URL to https:// and then % signs are happy.

MEXICOWANDERER wrote:
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

There's no exercise here, nothing to accomplish. Just sharing my observations on a charge cycle as I recall Don having trouble getting his Yamaha + Magnum setup to charge at 122 vac input, or was it without a load on the ac, something like that.

BFL13 wrote:
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'll try to make a note of that tomorrow. I was out on a morning walk with the dog for most of the charging cycle. It took about 2.5 hrs to go from 70 pct to 98 pct.

I discontinued at 98 pct, as I got tired of smelling the generator. There's no wind today, and the Yamaha gets stinky when it's a super low idle in Eco mode... I think it's the fuel stabilizer making the exhaust stink

On a side note... I have a little tool back in the lab that is a WiFi RS485 decoder. One of these days I need to plug it into the Magnum so I can record and chart all the data it produces, without buying the $250 Magnaweb interface.

UGH what a pain in the arse it is not being able to use the percent sign. I really need to stop using rv.net

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

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

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.

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 105F

Update, 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 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.