The choice of battery , in addition to its size will depend on the type of caravanning you do. If you are nearly always on an EHU then it can be a cheap technology battery and does not need to be of very large capacity.
If you are an off EHU user things change greatly in that you need a battery of a much more expensive technology, of decent quality and as large as physically practical.
For the latter you need a true Leisure battery, not to be confused with a battery labelled as a "leisure" battery; largely price and definitely weight will give you a good bit of the info to separate between the two.
If you are in this camp:
Brands to trust are Banner, Exide and Varta; there is a lot of poor stuff out there. Read John Wickersham's dated but still on target "Power Plays".
Try a specialist battery vendor like Alpha Batteries and Tayna Batteries both excellent companies to deal with in my experience and both do batteries for a wide budget range.
See if membership of either main club yields a bit more discount; over time they do offers.
It will stop it discharging whilst not connected to anything. If its still connected to the van there maybe a small loss and 2.4w may not be enough when the light level falls.
Quote: Originally posted by kegonlegs on 20/7/2016
Hi peeps
Ive just purchased a Hankook 90ah DC27 battery and have a 2.4v solar panel connected to it is that sufficient to keep it trickle charged?
2.4 watts is around 0.2 amps. A battery could leak more than this with no load on.
Amazing family weekend with old steam engines, classic car displays, market stalls, and full catering and bar. And camping on site - Save £25 by booking in advance.