After reading this thread I've gained a slight understanding about the type of recharging system we ought to have in our trailers, but I'm still a bit confused.
is 21 years old. It has a convertor built in to it and I was told that the convertor also would recharge the battery when I plugged into shore power. Now, I added a second deep cycle battery and installed a 1500w invertor.
I use the invertor to make coffee on mornings when we are boondocking
. I can also run the TV and Dish receiver and be able to have enough juice for a two night weekend. I've used the toaster on mornings also.
After I get back home I plug my trailer into shore power in my driveway to bring the batteries back up. Now, here is where I get into trouble. The convertor charges the batteries back up, but doesn't shut down after they are fully charged and a month or two latter,(if I forget to unplug) the batteries have lost their water and are dead. I refill them with rain water and they come back to life after a week or two plugged into shore power and using the convertor to recharge them. ( at least this occured twice so far).
What can I put inline in my trailer that will stop the recharge juice from boiling my batteries after they charge back up? Is there a smart charger or some sort of control that I can put between my convertor and the batteries that will stop the recharge juice and then open up again if the batteries lose a bit of charge? Is there a way I can keep the trailer plugged in at home so I'll always have cold beer in the fridge
and not have to worry about the batteries boiling over?