Hi All, We just got our new 2670BH Keystone Passport. I intend on dry camping and thus planned on adding a second 12V battery. Before I got around to it I noticed that my batter would be dead less than 24 hours after unplugging with nothing obvious "on" in the camper. Over the weekend I went ahead and added a second battery (same size) and left it to charge for the day. Sunday I unplugged it, left nothing on and sure enough, it is dead today.I have read a few posts on the topic and don't suspect the batteries are bad (I suppose that could be the case, new batteries are bad) but wondered if anything pops into anyone's mind with this brand as culprits for battery drain.I ensured all lights are off in every compartmentChecked for switch on freezer (non installed)Checked to make sure fridge is off (does it matter what the other switch is set to (gas/auto) if the other switch is off? Either way, it wasn't remotely cold anyway.I put the TV antenna down today to see if that matters (not sure why it would)Thanks for any help!

First thing to do is install something like a Blue Seas battery disconnect switch.There are parasitic draws even when not in use, but yours sound a bit worse than normal, almost as though something is on that otherwise wouldn't be.

LP Detector is know parasitic drain but not that quick....more like week(s)TV Antenna booster ON?Any lights in storage compartments?Any lights by dump valves....front area?Otherwise.....Overnight drain......you have insulation worn thru....bare wire touching frame/metal Need to check amp drain by connecting a multimeter between Battery Neg post and negative cable.Then remove DC fuses one at a time until amps drop

stereo. the "off" position is really only standby. however, it should take 4-5 days to drain a single 12V battery. drain is not insignificant.Next is leaving the antenna box in the cable position, it again will draw enough to slowly drain the battery.most keystones built after about 2013 have a external battery disconnect switch. check to see if your does.and tv. if it is a 12V TV make sure it is really OFF, not standbyalso, the standard WFCO charger is not likely to fully charge a single battery discharged to less than 50% in 24hours, more like 48 hours. virtually impossible to get them into the boost mode with 55A output, instead it will default to 13.2V and 10A or so tapering down.

I have 2015 keystone 311 Impact toy hauler my battery that the dealer tossed in will stay good for days running the led lights. You can join Keystone forums that address keystone produces and very helpful.

I had the same on my camper - battery would die within 24 hours even with "everything" off (ie lights, radio). I have a battery disconnect, so got in the habit of turning it off at night but I was curious what was draining the battery. Using an ammeter did not give me any clues - although using a volt meter across the battery did show a drain.Last summer, I got I switched off the fridge and CO2 detector - sure enough these items were drawing down the battery.I now switch off the fridge AT THE FUSE BOX at night and my battery lasts the night. I have since added a second battery and a 165W solar panel which keeps the batteries topped up (no more generator)Gerry

2015 Keystone Passport Battery Drain | Good Sam Community

Dakota98
Explorer
Jul 14, 2015
First thing to do is install something like a Blue Seas battery disconnect switch.

There are parasitic draws even when not in use, but yours sound a bit worse than normal, almost as though something is on that otherwise wouldn't be.
Old-Biscuit
Explorer III
Jul 14, 2015
LP Detector is know parasitic drain but not that quick....more like week(s)

TV Antenna booster ON?
Any lights in storage compartments?
Any lights by dump valves....front area?

Otherwise.....
Overnight drain......you have insulation worn thru....bare wire touching frame/metal
Need to check amp drain by connecting a multimeter between Battery Neg post and negative cable.
Then remove DC fuses one at a time until amps drop
ktmrfs
Explorer II
Jul 14, 2015
stereo. the "off" position is really only standby. however, it should take 4-5 days to drain a single 12V battery. drain is not insignificant.

Next is leaving the antenna box in the cable position, it again will draw enough to slowly drain the battery.

most keystones built after about 2013 have a external battery disconnect switch. check to see if your does.

and tv. if it is a 12V TV make sure it is really OFF, not standby

also, the standard WFCO charger is not likely to fully charge a single battery discharged to less than 50% in 24hours, more like 48 hours. virtually impossible to get them into the boost mode with 55A output, instead it will default to 13.2V and 10A or so tapering down.
debraindi
Explorer
Jul 14, 2015
I have 2015 keystone 311 Impact toy hauler my battery that the dealer tossed in will stay good for days running the led lights. You can join Keystone forums that address keystone produces and very helpful.
fitznj
Explorer
Jul 14, 2015
I had the same on my camper - battery would die within 24 hours even with "everything" off (ie lights, radio). I have a battery disconnect, so got in the habit of turning it off at night but I was curious what was draining the battery. Using an ammeter did not give me any clues - although using a volt meter across the battery did show a drain.

Last summer, I got I switched off the fridge and CO2 detector - sure enough these items were drawing down the battery.

I now switch off the fridge AT THE FUSE BOX at night and my battery lasts the night. I have since added a second battery and a 165W solar panel which keeps the batteries topped up (no more generator)

Gerry
dee74
Explorer
Jul 15, 2015
My 2014 Passport was the same. In two days the battery would be completely drained. I never did find out what caused the battery drain.
JohnZurk
Explorer
Jul 15, 2015
Okay, I have learned a few things...
I apparently don't know really know much about using a multi meter, but I learned enough to know my batteries were charged to 12.78V.

I found that the TV amp was on.

I wasn't able to figure out how much anything really draws by pulling fuses and touching the terminals with a probe with the multi meter on the A with a line with three dots under it.

Three of the fuses have LED lights that came on when I pulled them and one is the propane detector... if I read it right on the multi meter, it pulls .01

I also tried pulling the negative cable and using the multi meter to touch it and the negative terminal... I couldn't make sense of any of the readings except when it read the same as the it did when I touched both terminals of the battery itself.

We will see tomorrow what the batteries read in the morning.

dee74, what did you do to resolve it? Get rid of the camper?
JohnZurk
Explorer
Jul 15, 2015
Okay, that didn't work... multi meter said 2.8 v this morning...
Community Alumni
Jul 15, 2015
Old-Biscuit wrote:

..........

TV Antenna booster ON?...........

Never thought of that; I don't recall the booster light being on if not on ac power but I would need to check.
wbwood
Explorer
Jul 15, 2015
Add a battery disconnect switch or just disconnect the battery cables. That is what we did with our Keystone Sprinter TT we used to have. We learned pretty soon that with the LP detector, it would kill the battery after a week or so. In the beginning, it seemedto us that the battery would last a few weeks. But ti kept getting shorter and shorter on the time. We essentially were killing our battery. Ours did not have a disconnect switch. Ended up buying a new battery and started just removing the battery and bringing it home with us since ours was stored in lot by that time. Our class C has a disconnect switch. We still have to remember to turn it off, but we usually do within a day if we forgot.

If you add a disconnect swtich, remember it has to be in the on position for it to charge. If it's off, it will not charge up.