I feel electricity in the air. We're going to dive straight in. No news, no nothing. This is power – a big subject. So firstly, Matt, what is a lithium battery? Well, is it lithium-ion or is it lithium iron? Is it ion or iron? So lithium iron. Proper! That's a pirate battery. So a lithium iron battery is actually a type of lithium-ion battery. So i. Very much 21st century technology. But why the hell do I need one? Well, that's the question. So people think, “Well, I need to get one because it's the latest technology.” Do you really? There are a number of downsides to lithium. I've mentioned the costs. And. Brilliant, right. So we think that's an option for us. What do I need to consider, then? So I've got a four-year-old Adria Twin, our motorhome. And it's a van conversion, for those that don't know. Can. I'm going to a campsite. I arrive with the kids. We've driven for an hour, we hook up and we stay on the campsite for 24 hours. We unplug, we go for a drive and go home. I can hook up on. So what does this technology cost me? What does a lithium iron battery cost? Well, as you heard there, it's £700 or £800 for the battery, and no.