Charger selection help please
I'm thinking about buying a Noco Genius G26000 26a smart charger for when the sun isn't getting my batteries charged. I have a FR Stealth Toyhauler with two Interstate GC2 208ah batteries. They do...
Forum Discussion
Hi BFL13,
I don't pretend to understand it--but I can tell you it was an observed number in real life. I was in Estevan, SK in the Walmart parking lot. I deliberately ran the battery bank down by running a 446 watt oil filled heater, a 50 watt heating pad and my laptop for four hours.
As I knew I would be using the Yamaha 3000, I had set the limit on the Magnum remote to 23 amps. When I started the generator, the Magnum shot up to 127 amps and faulted. I immediately shut it down and got out the owners manual to learn how to limit the charge. I settled on 13 amps so that I'd not exceed the 27 amps per jar for my surplus acid AGM telecom jars. When I moved back to 15 amps, as an experiment, the charge rose again to 125 amps. I dialed it back down. I do not remember the charge voltage--but I do know I had previous set up a custom charge profile limiting the voltage.
The only explanation I can offer is that not all power factor corrected devices work as efficiently as each other.
13 x 108 = 1404 watts
15 x 125 = 1875 watts (which is pushing a 15 amp circuit too hard, but it won't cause an immediate trip of the circuit).
Since the Yamaha generator that the OP has can only do 1600 watts continuous--13 amps is probably the best setting.
Good luck to the OP getting to 100% state of charge on the generator. It is NOT a good idea from a cost per unit of power, even with AGM starved acid cells.
I don't pretend to understand it--but I can tell you it was an observed number in real life. I was in Estevan, SK in the Walmart parking lot. I deliberately ran the battery bank down by running a 446 watt oil filled heater, a 50 watt heating pad and my laptop for four hours.
As I knew I would be using the Yamaha 3000, I had set the limit on the Magnum remote to 23 amps. When I started the generator, the Magnum shot up to 127 amps and faulted. I immediately shut it down and got out the owners manual to learn how to limit the charge. I settled on 13 amps so that I'd not exceed the 27 amps per jar for my surplus acid AGM telecom jars. When I moved back to 15 amps, as an experiment, the charge rose again to 125 amps. I dialed it back down. I do not remember the charge voltage--but I do know I had previous set up a custom charge profile limiting the voltage.
The only explanation I can offer is that not all power factor corrected devices work as efficiently as each other.
13 x 108 = 1404 watts
15 x 125 = 1875 watts (which is pushing a 15 amp circuit too hard, but it won't cause an immediate trip of the circuit).
Since the Yamaha generator that the OP has can only do 1600 watts continuous--13 amps is probably the best setting.
Good luck to the OP getting to 100% state of charge on the generator. It is NOT a good idea from a cost per unit of power, even with AGM starved acid cells.
BFL13 wrote:
"To do this you will need a power factor corrected charging device. The Magnum 3012 inverter/charger can do up to 125 amps of charging on a 15 amp shore power supply. For a 2000 watt Yamaha that would have to be "dialed down" on the Magnum ARC remote from 15 to 13 amps and that would limit charging to about 109 amps"
I do not understand how all that can possibly work. My PF corrected 100 amper draws 1910VA by Kill-A-Watt when output is 100 amps at 14.x volts.
So howinheck can you run a PF corrected 125 amper from a "15a" circuit? The 100 amper was drawing 15.57 amps. (The VA was with 122.7v/15.57a) A PF corrected 125a is going to need a 20a circuit would think. ????
The 75 amper Kill-A-Watt figures are:
123.8v, 13.64a, 1693VA, 1241w, PF 0.73
So I can see there that if you dial down the Magnum which is still then PF corrected, you could do more amps output than 75 with a draw of 13a, but I don't know about 109a--seems like a lot.
