Choose which leisure battery

Hamish, given your requirements then a lead acid batter should do, you also have the option of a glass mat AGM, GEL, or even a LiOn but if you generally use a hookup and do not do deep discharge cycles then a lead acid is fine. If you do go off grid even occasionally then consider an AGM one the cost difference is not that big and it will last considerably longer if you do want to go off grid.

Its a personal choice but have a look at:

https://www.thencc.org.uk/Our_Schemes/ncc_verified_leisure_battery_scheme.aspx

This details the types and the quality and whilst no guarantee of longevity it gives you a good idea of what you get.

I ended up with a Leoch (DBS Energy) AGM type as it has good life-cycle numbers, competitive price, and available in my size. 

12 months on it still works, but then I expected that.

I have always tried to buy sealed Marine batteries for my caravans. I had one in my first motorhome but in my new motorhome I have a Banner battery. Don't really like batteries that you have to top up and if I need to change it, it will be for a Marine battery. I saw those in the magazine and was tempted but as the current battery is only just over a year old it would be a bit of an indulgence to change it!

David

Thank you for the replies. I’ll press on and get a Britmarine battery.