Originally Posted by
Cuppa
Aha, so the ctek in the car 'sees' the three batteries as a single unit. How do you manage when camped but have disconnected the vehicle from the camper to go off for a drive? I would wonder if there might be occasions when you want to hook up & drive, immediately after a drive without the camper connected. In which case the aux battery would be fully charged, but the camper batteries would be depleted (from running the fridge etc whilst you had been off driving without the camper). Most times this wouldn't be an issue as given time the three batteries would balance themselves once reconnected. But what happens when you reconnect & drive away immediately? would't the ctek see the aux as charged & not in need of charging, not charging the camper batteries until the voltage in all three had dropped (balanced). This may not be an issue, but I can imagine a possibility where on occasions you stop set up camp & find the batteries are not as fully charged as you need? I suppose it depends upon how quickly the batteries balance themselves & how long you drive for & how long you intend to camp without driving again (The capacity of three batteries would likely give a reasonably sufficient 'buffer' if the next stop was only a short one & the sun was shining). Those three factors could make it a non issue for you, where for some it may be. A fine example of how 'pattern of usage' varies what will work for some & not others I suspect, & a reason to always ask what the pattern of usage is as well as 'what does the user want to run'?
Cuppa