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Old 04-05-2016, 07:22 AM   #1
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Battery Storage Switch Position

We have a 2016 Flying Cloud 25 feet with TV F250. Does anyone know if the battery switch should be in the "store" or "in use" position to charge the batteries when plugged into shore power or when towing down the road.
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Old 04-05-2016, 07:39 AM   #2
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The switch should be in the "in use" position.

Brian
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Old 04-05-2016, 09:19 AM   #3
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I thought when towing it was a direct connection to the batteries so the switch position wouldn't make a difference. It does need to be in "use" when connected to shore power to charge.
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Old 04-05-2016, 10:59 AM   #4
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Richw46 is correct. Tow vehicle charging happens to the AS batteries no matter what the use/store switch position. Charging from the converter/charger in the AS happens only when the switch is in the Use position.
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Old 04-05-2016, 12:38 PM   #5
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Something I have recently realized is the constant single-stage charging voltage of the factory converter/charger can ruin your batteries over the long term if connected to shore power and the trailer electrical equipment is not in use, like at home in the driveway.

However, if you are camping, plugged into external power, and using the trailer electrical equipment, the factory converter/charger is not nearly as damaging to your batteries. This is because the batteries are in use and being discharged at the same time as being charged.

So its okay to have the battery switch in USE position on external power when the trailer is actually in use. But if simply parked at home between trips either put the battery switch in STORE if connected to external power, or do connect to external power except for short periods to keep the batteries up.
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Old 04-05-2016, 12:40 PM   #6
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Or do as we do and just let solar power system with its better charger keep the batteries up.


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Old 04-06-2016, 03:43 PM   #7
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Batteries

When traveling I leave the switch in the Use position. When home I leave it in the Use position but put it on a timer to come on several hours a day. Batteries have been fine with this.
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Old 04-06-2016, 04:32 PM   #8
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Be aware that the red light next to the Use/Store switch is ALWAYS ON when you are connected to shore power - you cant depend on the red light to tell you whether the batteries are being recharged or not while on shore power. To be sure of what I'm doing while on shore power, I press the Store switch if I dont want to recharge the batteries (the red light stays on). I press the Use switch if I want to ensure I'm recharging the batteries while on shore power (the red light stays on).
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Old 04-06-2016, 09:05 PM   #9
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Quote:
Originally Posted by dkottum View Post
Something I have recently realized is the constant single-stage charging voltage of the factory converter/charger can ruin your batteries over the long term if connected to shore power and the trailer electrical equipment is not in use, like at home in the driveway.

However, if you are camping, plugged into external power, and using the trailer electrical equipment, the factory converter/charger is not nearly as damaging to your batteries. This is because the batteries are in use and being discharged at the same time as being charged.

So its okay to have the battery switch in USE position on external power when the trailer is actually in use. But if simply parked at home between trips either put the battery switch in STORE if connected to external power, or do connect to external power except for short periods to keep the batteries up.
I use a Noma block heater timer set for 1 hour/day to keep the batteries up when just sitting in my yard. That way the batteries are charged but not overcharged. (Same trailer)
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Old 04-06-2016, 10:52 PM   #10
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A timer is a good idea I think. We have a solar system so no reason to try it.
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Old 04-07-2016, 01:14 PM   #11
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You could also change your power converter to a multi-stage unit for a lot less than a solar system. I replaced my ancient OEM converter with a Progressive Dynamics Inteli-Power 9200 (PD9200) 60 amp unit. It gives me more amperage (vs. 45amps) and cycles the batteries properly. The PO had hand wired a light switch to the 110v outlet to "control" the PC's on/off times. Not sure how well that worked but for less than $100 I chose to upgrade. Something to consider, Good Luck!!!
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Old 05-20-2016, 12:22 PM   #12
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Quote:
Originally Posted by dkottum View Post
Something I have recently realized is the constant single-stage charging voltage of the factory converter/charger can ruin your batteries over the long term if connected to shore power and the trailer electrical equipment is not in use, like at home in the driveway.

However, if you are camping, plugged into external power, and using the trailer electrical equipment, the factory converter/charger is not nearly as damaging to your batteries. This is because the batteries are in use and being discharged at the same time as being charged.

So its okay to have the battery switch in USE position on external power when the trailer is actually in use. But if simply parked at home between trips either put the battery switch in STORE if connected to external power, or do connect to external power except for short periods to keep the batteries up.
Doug I had saved your post above for reference as this conclusion to me is key. After reading the recent ASLife and Rich's article on the converter vs. inverter which was silent on this detail, I thought I'd revisit your post.

Our storage has no SP, so I disc. the neg connection while in storage. Depending on trailer usage I closely monitor water and charge and as required bring the batt's home for a top off especial when hot. I do bring them in the winter for a vacation on by work bench.

Generally while on SP, I have been using the store switch after the first night (and the batt's are topped off), but that wreaks havoc with the radio and having to continually reset the "going dark/light show setting".

Knowing that I can utilize the Use side of the circuit when traveling and connected SP and drawing power from the batts and feel safe is huge IMO.

So I understand the circuitry, you're saying that SP (USE) charges the batts, and when I put on some tunes or flip on the lights, those devices are being powered by the batts, not the (single stage in my case) converter, and the converter is recharging the batteries?


Thanks

Bob
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Old 05-20-2016, 12:54 PM   #13
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Bob,

If it is in USE, the battery and converter are connected together and all DC loads are supplied by both. If it is in STORE, then all DC loads are supplied by the converter and the battery is disconnected from the DC bus. But, the battery will still charge from the tow vehicle in STORE.
If SP is connected, this still applies. If SP is not connected then when in STORE, the only DC load connected is the propane detector.

Larry
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Old 05-20-2016, 01:26 PM   #14
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Great thanks Larry. I understand and much appreciate the explanation.

So for us it's USE and the radio "going dark/light show setting" manageable

Have a good one.

bob
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