Do I need to take my battery home to trickle charge?

time2roll wrote:
Actually if the trailer never moves you probably do not even need a battery.

Maybe, maybe not. Slides and awnings are intended to be powered by the battery but some, my awning & small sofa slide being examples, will extend / retract just fine without a battery and with just the converter providing power to these devices. If the OP's trailer has a slide and / or awning he could try extending / retracting them without his battery connected - if they work then there's no need for a battery at all on his permanently situated trailer. If they don't then he knows he needs a battery and should disconnect it whenever he's not actually using the trailer.

Another option for charging may be a solar charger like the one I have from battery tender. I have the 5 watt model, $59 on amazon. I'd think that is marginal for your bigger battery and would suggest at least a 10 watt. The suggestion is null if you worry about theft though. Best of luck in your decision.

if you are using the trailer with it plugged in, the battery is being charged... its highly unlikely that you are using more amps than your charger/converter puts out, so the battery should already/still be fully charged when you unplug from shore power when getting ready to leave.

this means you dont need to remove the battery and take it with you..
and if you dont get back to the trailer for a few months, just plug it in when you do and the battery will again get topped up WHILE you are using lights and other 12v devices...

if you have Phantom loads that are drianing your battery when you are away from the trailer, install a battery disconnect... or remove one of the battery cables from a battery post. a good fully charged battery, disconnected from the system, should still be holding a decent charge after 8-10 months..

I have two choices, unhook that battery or keep the TT plugged in. If I unplug and walk away, the phantom loads will run the battery dead in about 4 of 5 days.

I charge the battery and keep it in the garage all winter.

Option 4 add 200 watts of solar and leave the battery connected. This will keep the computer boards warm and likely moisture free.

sportbob wrote:
but need to unplug when I leave.

Why ??

IF.....the battery is fully charged AND it is in good health AND you completely disconnect it, it should last a couple of months with no problem.

But it might be better to have it on an automatic battery tender (NOT a cheap trickle charger), especially if the trailer will be sitting out in the direct sun where it is HOT. Heat kills batteries.

Thank you for the reply. I think I'll go with option 3. Not a bad idea to move the battery inside the trailer to keep is safe from theft as well. I appreciate you help!

If it is only for a month or two, just disconnect the ground from the battery each time you leave.
If not there is some small parasitic draw from the battery and you could end up with it dead.
Much longer than that and I would bring it home and put it on a charger every couple of weeks

jack L

Trailer will discharge the battery flat dead in a week or so if you just leave it.
If you disconnect a battery cable it will sit just fine for 2 to 4 months.
If concerned about security you could place the battery in the trailer while you are away or just bring it home.

If you have sun on the trailer 100 watts of solar on the roof should keep you charged indefinitely.


On edit:
Actually if the trailer never moves you probably do not even need a battery.

No, I cannot keep anything plugged in while away. I would need to haul the battery back and forth from home with me to trickle charge it. No one will be watching it while away. Thanks for the reply.