Nespresso on inverter "stutters"

[CaptainRivet]

Originally Posted by jskamer

Thanks all for the helpful replies! I've done some further digging and I believe I have narrowed the issue down to the "main" battery cable running from the furthest two poles to the battery disconnect switches.

- Ive bought a new nespresso machine that is specifically made for low draw and should draw 850w, when using it I see an amp draw of 80a so that matches the sticker.
- This new machine also stutters (all be it a lot less)
- When I apply the load the batteries (measured on their poles) drop about 0.3v, the same applies to the lugs of the "main" battery cable at the battery
- When I measure the other side of the "main" battery cable the drop is way more (at least 0.9v), the inverter takes its power from the other side of the disconnect switch (so this could explain the behaviour in my opinion)
- The "main" battery cable is an uninterrupted run of 50mm2 cable running about 2meters

I do not understand how a cable could have such high resistance that this results in such a massive voltage drop. I'm planning on replacing this main cable and will report back with my findings!

What does stutter mean?
All the time when you use it or just the first 2 or 3 seconds of use?
Connections and fuse have voltage drop too. 50sqmm with 80A and a voltage drop of 0.3V at the batteries...well at which voltage/SOC but that sounds a lot.
Max out your inverter and draw max load over min 3min and touch all connections from battery till inverter, if there is a problem it gets hot. Easiest way to find connection problems