Originally Posted by D-mo
if your using the 12 volt recharge from the honda to the battery.. it will take forever ..
if you plug your honda to your trailer ... a good 3-5 hours ...
oh .. sorry to say this .. but you need a new battery in 2 years .. they have to be taken care of ... not drained completely ... and recharged ..
Deep cycle batteries are designed to be discharged and charged. I had one I used on an electric motor for a boat and was constantly taking it all the way down and then recharging it. I replaced it after four years but it was still operating and I kept it for a spare.
If you're using a deep cycle battery in your trailer I would imagine it would be the same way and I would expect to get four years or longer. Of course if you using an automotive battery it is not going to hold up.
What id the charge rate from the trailer converter? 10 to 12 amps? The 12 volt on my EU3000i is 12 amps but you can't use the eco or have any 120 volt plugged in to get that. Turn the eco switch on and the 12 volt amperage drops to about 4 amps, even with no 120 usage.
One very important caution, the 12 volt is not regulated so you could cook your battery if not careful! I personally will not use the 12volts. Safer to carry a cheap 120 volt charger to charge a spare batter and not have to worry. Of course your trailer converter is the best bet.