The next morning we went through the rest of the locks to Middlewich. During this section we had a repeat of worrying behaviour of the diesel engine. It starts from cold very reliably, and we’ve had no problem getting the batteries fully charged. If we then have more travelling to do, we’ll drive on electric for a while. Later, to charge the batteries, we run on diesel again. Several times the engine has failed to start at this point. It feels a bit like a flat battery, but I’m pretty sure it isn’t that. So far, trying again half an hour or so later, the engine has just started as normal.