Originally Posted by edge10world
I have a 700 watt inverter ,I only need a 300 watt,will a 700 watt drain my battery more than a 300 watt?THX
The short answer is yes, but a better question is "How much faster"
If your batteries would last say 48 hours with the 300 watt.. With the 700 watt they might drain in say 47 hours 45 minutes.
In short, not enough difference to matter.
In practice, you likely do not havfe 48 hours worth of batteries.
I would NOT recommend replacement of the inverter.
page 2: True sine v/s MSW.
For years I figured MSW were more "Efficient" then one day, for some reason or another (Likely to answer a question in a forum) I researched and much to my surprise.
On one line I checked,, Peak effiecency on the MSW was 90%
On the TSW.. 90 % (Well 89-90 percent)
In short, again not enough difference to matter.