BFL13 wrote:
When you use an inverter and a 120v appliance such as the 60w bulb he used, the inverter will draw more amps as time goes on as the battery voltage falls. Called "inverter creep" as it tries to maintain output voltage.
DC lamps dim when battery voltage falls so they draw fewer amps as time goes on.
This is true. The battery will see the inverter as a constant power load.
Regardless, without measuring current throughout the entire test he doesn't know what his true Ah depletion is. I'm not saying it invalidates this as being his baseline.
