Is there a way to make an inverter that only draws power when a load is connected?
If the output of an inverter is not connected to anything, there is no current flow though it. What you are asking for is actually the natural state of any power device; no load connected = no current flow. There is however a &quot;burden&quot; load on your battery to power up the internal control architecture of the inverter assembly itself, which would be necessary if you want the inverter ready for action as soon as a load is connected. On something &quot;wearable&quot; this can be a few watts to a few dozen watts, we have no way of knowing how you are designing it.