Battery going out this soon?

[Yosemite_Sam1]

My camper trailer is just 6 months old. Did not saw reason to buy and install a 2nd battery.. Went camping for a week and battery never once discharged even on 4 straight days of use with no recharging.

This last few days, I noticed that lights dimmed even after I connected ihe RV to house outlet overnight where battery is supposedly fully charged.

Today I run the generator and when I left, I checked and it was 3/4 full. There is no extra load on the RV aside from the usual LED lights that I’m siure we’ve all turned off. And no one was left inside to trigger he running of water pump. But after 3 hours outside the battery indicator is flickering and none of the LED lights would turn on.

Yes, I have an extended warranty from Good Sam but want to check first if I’m doing something wrong that might have caused the battery to quickly drain.

[Lwiddis]

“You can't do that to lead/acid batteries. They are damaged by any more than a 50% discharge.“

Not exactly, Matt. The number of cycles decreases as the percentage of discharge increases. Not that much difference between 50% and 60% for instance. See the cycle life chart from Trojan for their Signature flooded series..https://www.trojanbattery.com/products/deep-cycle-flooded/signature-line-flooded-2/

[Matt_Colie]

RT,

You may be misinterpreting what you are seeing.

You say that the battery did not discharge in 4 days.
If by discharge, you mean that the lights got dim and things didn't work?
Then that is part of your problem right there. When to lights go dim, that is typically about 10 volts. That is an 80~90% discharge. You can't do that to lead/acid batteries. They are damaged by any more than a 50% discharge.

That the lights are dim after connecting to shore power indicates that the onboard converter/charger is not doing what it should. This can be either the converter of the battery is that badly damaged.

With the information available, all I can suggest is that you check out the installed system and determine that it is/is not working as it should.

You should also be aware that if the new trailer was shipped with, or fitted with a battery while on the lot, it may have been discharged there to the point that it was damaged.

Matt

[fj12ryder]

Just on the off chance, check that your converter is working properly. We had one go bad on a unit that was only a couple months old.

[Chris_Bryant]

Check your breakaway switch to make sure it isn't pulled.

[bikendan]

you don't seem to know about the many parasitic power drains in modern RVs.
they can drain a single battery in just a few days, if not hooked up to shore power.
not sure what you're using to say that the battery didn't discharge for 4 straight days of usage, that doesnt' make any sense. any battery will lose power after that many days.