Multiple inverters?
Would it help with maximizing battery power if one had multiple inverters for their rig? One would be a 300 watt PSW like the Morningstar SureSine 300. This would be hooked up to an outlet or two ...
Forum Discussion
You would really need to know the specifications for the inverters you are interested in. The Morningstar you mention draws 450 mA at idle (6.6 watts at 13.8 v) and has efficiency rating of 92%. It also draws 25 mA even when turned off.
I have a Xantrex ProWatt 2000 (PSW) which draws 600 mA at idle (8.3 watts at 13.8 v) and zero amps when turned off. It's efficiency rating is listed as 85 to 90%.
The Morningstar would theoretically draw 217 watts to supply a 200 watt load. The ProWatt would require 222 to 235 watts for the same load depending where it was on the efficiency curve. This amounts to a .3 to 1.3 amp difference at 13.8 v.
For me it doesn't make sense to support the added expense, weight and wiring required for multiple inverters. If I aleady owned an extremely inefficient large inverter, I might consider adding a small efficient inverter for small loads.
I have a Xantrex ProWatt 2000 (PSW) which draws 600 mA at idle (8.3 watts at 13.8 v) and zero amps when turned off. It's efficiency rating is listed as 85 to 90%.
The Morningstar would theoretically draw 217 watts to supply a 200 watt load. The ProWatt would require 222 to 235 watts for the same load depending where it was on the efficiency curve. This amounts to a .3 to 1.3 amp difference at 13.8 v.
For me it doesn't make sense to support the added expense, weight and wiring required for multiple inverters. If I aleady owned an extremely inefficient large inverter, I might consider adding a small efficient inverter for small loads.
