Forum Discussion

Explorer

Apr 11, 2020

Plugged in or Trickle Charger

Our trailer is now parked next to our house. I could keep it plugged in 24/7. Is it better to do that, or take the batteries out and plug them into Battery Tenders if the trailer isn't going to be used for a while (say a month.) Our batteries are regular, maintenance required deep cycle batteries. Our previous batteries died, I believe because they were left disconnected and not on any trickle charger for a few months. I'd like to try to treat these batteries better.

Also, the previous batteries had some corrosion on the positive terminals. This transferred to the Battery Tender connections. I assume I need to clean them before connecting to the new batteries, but how thoroughly do I need to clean them, how should I clean them, and should I use some sort of anti-corrosion spray?

43 Replies

azdryheat
Explorer
Apr 11, 2020
Mines been plugged in to the house (30 amp) it's whole life.
Grit_dog
Navigator II
Apr 11, 2020
Yes you should do one or the other, at least periodically.

If your converter isn't a "smart" converter, i.e. Also a battery tender then it can/will overcharge the batteries.
Since you have a battery tender, hook it up and use it unless you can verify your converter does the same.
Only need one maintainer if you have 12V batteries.
Nothing fancy, wire brush or sand the corrosion off. It shouldn't corrode again quickly.
Also Coca Cola cleans battery terminal corrosion nicely.
kellem
Explorer
Apr 11, 2020
Check water level twice a year and leave trailer plugged in.....charged battery won't freeze either.

If your trailer is close to level, keep frig running also as they'll last forever.