High DC use

[VTLee]

I have a 2010 Cougar 276RLS with two 12 volt batteries that will discharge in two or three days if I am running the frig on gas. This is just setting with no other use such as lights, pump, slide etc. Just the phantom draws and the frig. I have checked the batteries and they will stay charged for weeks when I use the disconnect switch. Does the frig draw that much juice. It is a two way Dometic DM2652 not a three way. What am I missing or is this normal.

[Fulltimer50]

Dont forget the usage of the water heater, lights and water pump.

[bpounds]

VTLee wrote:
I have a 2010 Cougar 276RLS with two 12 volt batteries that will discharge in two or three days if I am running the frig on gas. This is just setting with no other use such as lights, pump, slide etc. Just the phantom draws and the frig. I have checked the batteries and they will stay charged for weeks when I use the disconnect switch. Does the frig draw that much juice. It is a two way Dometic DM2652 not a three way. What am I missing or is this normal.

I have basically the same trailer, as far as equipment is concerned. My 2 6V batteries do a lot better than that. Never had the OEM 12V in it, so can't say on that.

Make sure you haven't left a light on in one of the cargo areas. Also, that Jensen entertainment system draws a decent amount of juice. If you have an inverter, make sure it is disconnected, even though it isn't being used.

No fans in my fridge.

Wiring in a simple voltage meter is handy for evaluating the current draw of various components.

[SoundGuy]

csamayfield55 wrote:
I would bet your fridge is in a slider and it has an electric "12 volt" fan between the upper and lower coils.

Bad bet 😉 ... floor plan for the OP's 5th shows his fridge is not in a slide but rather along the curb side wall. Fan(s) for the DM2652 are optional, meaning it was up to Keystone to decide if they'd install 1 fan, 2 fans, or none ... mine happens to have none as that's what Coachmen chose to do.

[VTLee]

SoundGuy wrote:

eb145 wrote:
The Dometic DM2652 has a climate control system that uses 12V DC power to run heaters on the door strip to evaporate water that condenses on the door strips. Make sure the climate control switch is turned off to reduce battery usage.

Dometic fridge manual

The Dometic manual for this fridge may show a climate control switch but my own DM2652 definitely does NOT have a switch so I added my own.

Dometic DM2652 DIY Climate Control Switch

Thanks! I had looked at the manual and the schematics but could not find the switch. I guess that Dometic did not want to incur another cost of $1.50 on this model.

[csamayfield55x]

I would bet your fridge is in a slider and it has an electric "12 volt" fan between the upper and lower coils. Those fans run pretty much non stop if it is warm out and will suck a battery down in a hot minute. If you are seeing this supplement with a solar powered coil fan and that should help out a ton

Chris

[12thgenusa]

The phantom draws plus fridge will draw at least 40 Ah in two days and 60 Ah in three days and probably more. If you have gp 24 batteries it would put you down about 62% SOC in three days. If your batteries are also a little weak . . .

[SoundGuy]

eb145 wrote:
The Dometic DM2652 has a climate control system that uses 12V DC power to run heaters on the door strip to evaporate water that condenses on the door strips. Make sure the climate control switch is turned off to reduce battery usage.

Dometic fridge manual

The Dometic manual for this fridge may show a climate control switch but my own DM2652 definitely does NOT have a switch so I added my own.

Dometic DM2652 DIY Climate Control Switch

[tonymull]

Smoke detector and CO detector will draw a batter down. I disconnected mine in favor of AAA battery powered ones. I boondock extensively. The AAA's will last 2-3 years if you take them out when not using the camper. If you leave them in they need to be replaced once per year.

[eb145]

The Dometic DM2652 has a climate control system that uses 12V DC power to run heaters on the door strip to evaporate water that condenses on the door strips. Make sure the climate control switch is turned off to reduce battery usage.

Dometic fridge manual

[ChooChooMan74]

Bad batteries? Did you pull your breakaway?

[azdryheat]

My single battery doesn't last more than a few days

[jjj]

Propane detector is a electrical draw also. I disconnect mine when trailer not in use. It seemed to drain my battery kinda fast.

[gronskis]

A fridge running on propane should use very little electricity. I expect that you have an electrical leak somewhere.