Generator size for Megawatt PS?
Hello all, I've been lurking on this forum for quite some time, but recently registered - mainly to ask this question! I'm looking at the larger (36/41 A) Megawatt, and am wondering what the minimu...
Forum Discussion
One can certainly start a 39 amp megawatt at a lower voltage to not exceed the Honda 1000 output.
I would not set it below the battery voltage however when starting, though I assume the unit has low voltage protection, unlike my cheapowatt which would emit strange noises like a ticking and whining bomb, when battery voltage was higher than the chosen voltage.
My Meanwell can do 41 amps, and I when I do set it to 13.2v, and hook up a depleted battery at 12.2v, 41 amps do flow, for a few seconds before tapering.
When I crank it upto 14.7v on a rested ~12.2v battery, 41 amps will flow for close to an Hour before tapering begins.
It is quite interesting watching how many amps flow at different applied voltages. The cabling between battery and PSU should be nice and thick. I use a few feet of 8awg through 45 amp anderson powerpoles and get 0.25v drop between voltage at terminals and battery voltage, at 41 amps.
Since the Megawatt's iny voltage pot only has a 270 degree sweep from minimum to maximum voltage, one can take note of the desired end position when in the end of CV stage and the battery is taking few amps and voltage drop is not much of an issue.
Solar is great for mitigating draws, and top charging, but blasting the batteries with higher amps, which mine seem to enjoy, requires other charging sources.
Low and slow does not always cut it, despite the affinity for the word 'trickle' by the general public regarding battery charging.
I would not set it below the battery voltage however when starting, though I assume the unit has low voltage protection, unlike my cheapowatt which would emit strange noises like a ticking and whining bomb, when battery voltage was higher than the chosen voltage.
My Meanwell can do 41 amps, and I when I do set it to 13.2v, and hook up a depleted battery at 12.2v, 41 amps do flow, for a few seconds before tapering.
When I crank it upto 14.7v on a rested ~12.2v battery, 41 amps will flow for close to an Hour before tapering begins.
It is quite interesting watching how many amps flow at different applied voltages. The cabling between battery and PSU should be nice and thick. I use a few feet of 8awg through 45 amp anderson powerpoles and get 0.25v drop between voltage at terminals and battery voltage, at 41 amps.
Since the Megawatt's iny voltage pot only has a 270 degree sweep from minimum to maximum voltage, one can take note of the desired end position when in the end of CV stage and the battery is taking few amps and voltage drop is not much of an issue.
Solar is great for mitigating draws, and top charging, but blasting the batteries with higher amps, which mine seem to enjoy, requires other charging sources.
Low and slow does not always cut it, despite the affinity for the word 'trickle' by the general public regarding battery charging.
