robind187

Right ok. The charger has a power factor of between 0.9 to 1 so should still be fine.

From a quick search, this generator has a power factor of 1. I'll check the fuel filter when I'm back at the boat next week.

I've re-checked my maths and 70A at 13ish volts should only be 910W, so the generator should be able to handle that, no? Fresh fuel is a good suggestion as it may have been sitting around for a while. The air filter looked clean but the pre filter was missing. Is cleaning the fuel filter worth a try? I see there's a 15-minute tutorial for how to do that on YouTube.

Seems like it. How much is a typical service? I'll have a go at cleaning the carb over the weekend and see if that helps

There's nothing else running off it (it's in charge only mode) and the air admittance valve is open.

I have a Sterling Combi S invertor/charger to charge our batteries from the engine when moving. I have just bought a second-hand Honda EU20i generator (2kW) as a back-up for charging the batteries. The generator starts up ok, but when I have let it run for a minute then connect it up to the invertor/charger using a fly lead socket converter and a fly lead it charges for a couple of mins at 70A then the generator starts struggling, pulsing then cuts out. I have read that the 70A continuous draw may be too much for this generator. Is there a way to limit the current coming into a Sterling Combi S inverter/charger? I can't see anything in the manual about this. Thanks in advance