On sale now at Canadian Tire is an excellent "smart charger" that will keep your coach battery
I have been using it for the past three years and it is absolutely bulletproof and foolproof.
It is the CTEK US3300 charger...a 3.3 amp solid state unit for $60 (reg $90)
It has no fans, can withstand the elements as it is totally waterproof, and is only a few inches long and weighs next to nothing.
It has been charging my Optima coach battery
for the past three years, and thus allowing me to run my Fantastic Fan all day in the hot Florida sun, along with the LED interior lights
I have used other so-called smart chargers in the past but they all had cooling fans and had to be kept dry...this little pup does the job and needs no coddling.
Sale is on till Thursday...save $30. and NO...I don't work for CTC
Happy camping...Alistair & Inge in The Road Toad