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01-23-2019, 03:48 PM
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#41
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Skoolie
Join Date: Sep 2017
Location: Kalispell, Montana
Posts: 103
Year: 1993
Chassis: MD463
Engine: DT466
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so you are telling me that 6 200aH videos on a 48vcd system is only 200aH? Your math is off bud.
Quote:
Originally Posted by weboughtabus
An additional 2 batteries would only bring you up to 400AH of storage. When combined in series you increase the voltage, but not storage. Series increases storage but not voltage. Combining them is possible. To get 48V you're combining 4 batteries to get to 200AH, 48V. 8 batteries 4P2S would result in 400AH, 48V.
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01-23-2019, 03:54 PM
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#42
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Bus Nut
Join Date: Feb 2018
Location: New Jersey
Posts: 335
Year: 2004
Coachwork: Corbeil
Chassis: Ford
Engine: Ford PowerStroke Diesel 6.0
Rated Cap: GVWR 11,500
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Quote:
Originally Posted by yaakbus
so you are telling me that 6 200aH videos on a 48vcd system is only 200aH? Your math is off bud.
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You would only result in a 200AH bank because you can only combine 4 of the batteries in series to create the 48V bank. The other two batteries could be combined to create an additional 24V bank or left as individual 12V batteries. If you added two additional batteries you would end up with two strings of 200AH 48V batteries. My math is fine.
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01-23-2019, 04:16 PM
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#43
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Skoolie
Join Date: Sep 2017
Location: Kalispell, Montana
Posts: 103
Year: 1993
Chassis: MD463
Engine: DT466
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I am getting clarification now. Even if I need to buy more batteries, its not a big deal. I am just going off what the customer service people told me. I am not above being wrong, but I am pretty sure they are not.
Quote:
Originally Posted by weboughtabus
You would only result in a 200AH bank because you can only combine 4 of the batteries in series to create the 48V bank. The other two batteries could be combined to create an additional 24V bank or left as individual 12V batteries. If you added two additional batteries you would end up with two strings of 200AH 48V batteries. My math is fine.
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01-23-2019, 04:45 PM
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#44
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Bus Nut
Join Date: Feb 2018
Location: New Jersey
Posts: 335
Year: 2004
Coachwork: Corbeil
Chassis: Ford
Engine: Ford PowerStroke Diesel 6.0
Rated Cap: GVWR 11,500
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Quote:
Originally Posted by yaakbus
I am getting clarification now. Even if I need to buy more batteries, its not a big deal. I am just going off what the customer service people told me. I am not above being wrong, but I am pretty sure they are not.
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If you understood that diagram, please look at this.
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01-23-2019, 04:47 PM
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#45
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Skoolie
Join Date: Sep 2017
Location: Kalispell, Montana
Posts: 103
Year: 1993
Chassis: MD463
Engine: DT466
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So here is the verdict. If you go with this kit ( https://theinverterstore.com/product...erter-charger/)
And add two additional batteries you are at 800aH of storage which according to them is well past the traditional 1.5-2.5 kwH most big systems in skoolies use per day.
Which is about 19.2 kwH of total storage and 10ish at 50% use. So even if I use an insane amount of power, like 4kwH per day, I would still be about 2.5 days before needing to charge and in an emergency about 5 days draining them to nothing without changing behavior. Which I cannot imagine would be the case.
Considering my my heater is propane, 84gallobs of fresh water, 180lbs (edited) of propane and rivers everywhere, I think I will be just fine.
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01-23-2019, 04:49 PM
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#46
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Bus Nut
Join Date: Feb 2018
Location: New Jersey
Posts: 335
Year: 2004
Coachwork: Corbeil
Chassis: Ford
Engine: Ford PowerStroke Diesel 6.0
Rated Cap: GVWR 11,500
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Quote:
Originally Posted by yaakbus
So here is the verdict. If you go with this kit ( https://theinverterstore.com/product...erter-charger/)
And add two additional batteries you are at 800aH of storage which according to them is well past the traditional 1.5-2.5 kwH most big systems in skoolies use per day.
Which is about 19.2 kwH of total storage and 10ish at 50% use. So even if I use an insane amount of power, like 4kwH per day, I would still be about 2.5 days before needing to charge and in an emergency about 5 days draining them to nothing without changing behavior. Which I cannot imagine would be the case.
Considering my my heater is propane, 84 gallons of fresh water, 180 gallons of propane and rivers everywhere, I think I will be just fine.
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That's only the case with a 24V system. You're doing a 48V system, so your capacity would be halved.
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01-23-2019, 04:49 PM
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#47
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Skoolie
Join Date: Sep 2017
Location: Kalispell, Montana
Posts: 103
Year: 1993
Chassis: MD463
Engine: DT466
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No you were right, I was misunderstanding but it has been clarified for me. I hope if people read this, they read all the way to the end because this stuff is confusing and was a good exercise in understanding how to really figure this out.
Quote:
Originally Posted by weboughtabus
If you understood that diagram, please look at this.
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01-23-2019, 05:26 PM
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#48
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Bus Geek
Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 10,482
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
Rated Cap: 77
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Quote:
Originally Posted by yaakbus
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That's a hefty supply of propane, how big is that tank? I was looking at a tank that was 48" x 15" and only 29.3. You have 6x's that amount. That's about 750lbs
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01-23-2019, 05:28 PM
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#49
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Skoolie
Join Date: Sep 2017
Location: Kalispell, Montana
Posts: 103
Year: 1993
Chassis: MD463
Engine: DT466
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Its just the 100lbs tank with two standard 40lbs tank spares. The big one is like 5ft long, mounted underneath and the two spares can connect if needed.
Its a lot but being where I go, heat and food are all that matter, outside safely getting there and back.
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01-23-2019, 05:35 PM
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#50
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Bus Geek
Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 10,482
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
Rated Cap: 77
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Quote:
Originally Posted by yaakbus
Its just the 100lbs tank with two standard 40lbs tank spares. The big one is like 5ft long, mounted underneath and the two spares can connect if needed.
Its a lot but being where I go, heat and food are all that matter, outside safely getting there and back.
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You have me confused now. You said you had 180 GALLONS, now you're saying LBS. 180lbs is only 43 Gallons
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01-23-2019, 05:54 PM
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#51
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Bus Crazy
Join Date: May 2017
Location: Chattanooga, TN
Posts: 1,413
Year: 2001
Coachwork: Thomas
Chassis: Thomas
Engine: CAT 3126
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The whole discussion of AH at a given voltage was an interesting exercise, but lost in the conversation was the fact that as you add more batteries, regardless of series or parallel installation, your total # of watt hours increases.
Going up to 48v does not reduce capacity, just how you count amp hours.
When using the same size of bank, fewer amp hours at a higher voltage still gives you the same actual watt hours delivered to your system.
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01-23-2019, 06:27 PM
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#52
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Skoolie
Join Date: Sep 2017
Location: Kalispell, Montana
Posts: 103
Year: 1993
Chassis: MD463
Engine: DT466
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Yeah what I was explained got lost. So I got the 24vcd inverter with 2 extra batteries, upgraded the solar charge controller and added two more panels.
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01-23-2019, 06:33 PM
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#53
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Skoolie
Join Date: Sep 2017
Location: Kalispell, Montana
Posts: 103
Year: 1993
Chassis: MD463
Engine: DT466
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My mistake in typing, its 180lbs so about 43 gallons. It will last easily a month of heavy use, with extra left over.
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01-23-2019, 06:36 PM
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#54
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Bus Geek
Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 10,482
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
Rated Cap: 77
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Quote:
Originally Posted by yaakbus
My mistake in typing, its 180lbs so about 43 gallons. It will last easily a month of heavy use, with extra left over.
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My whole question was based on 180 gallons which would be hard to mount on a bus and I was amazed you found room for that much.
This is the tank I want to mount in the right rear corner after removing the exhaust pipe in the way. 29.3 gallons
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01-23-2019, 06:38 PM
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#55
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Skoolie
Join Date: Sep 2017
Location: Kalispell, Montana
Posts: 103
Year: 1993
Chassis: MD463
Engine: DT466
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Haha that would be like those huge ones.
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01-23-2019, 07:42 PM
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#56
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Bus Crazy
Join Date: May 2017
Location: Chattanooga, TN
Posts: 1,413
Year: 2001
Coachwork: Thomas
Chassis: Thomas
Engine: CAT 3126
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I have a 50# (11ish gallons) of the same brand. Lasts a very long time.
Last filled in June and have been using for cooking, shower and heat off and on ever since. Getting low now but lasts soooo much longer than I expected.
I’ve only filled it twice since installing it!
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01-23-2019, 07:45 PM
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#57
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Skoolie
Join Date: Sep 2017
Location: Kalispell, Montana
Posts: 103
Year: 1993
Chassis: MD463
Engine: DT466
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A lot of people seem to shy away from it i have found but it's super handy and saves so much power!!
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01-23-2019, 07:47 PM
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#58
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Bus Geek
Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 10,482
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
Rated Cap: 77
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Quote:
Originally Posted by david.dgeorge07
I have a 50# (11ish gallons) of the same brand. Lasts a very long time.
Last filled in June and have been using for cooking, shower and heat off and on ever since. Getting low now but lasts soooo much longer than I expected.
I’ve only filled it twice since installing it!
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I'll need it for the range, shower, sink and possibly generator. I'll decide if I want to go with a form of propane heat after I see the wood stove drive me out from too much heat, or I'll need to learn how to build little fires. With 29 gallons it will be one thing I don't need to think about for awhile as you have seen.
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01-23-2019, 07:56 PM
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#59
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Skoolie
Join Date: Sep 2017
Location: Kalispell, Montana
Posts: 103
Year: 1993
Chassis: MD463
Engine: DT466
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The only trouble with a wood stove from my view is its illegal to carry wood across state lines which makes it a pain in the butt. But know they are super effective. I personally prefer constant heat rather then the heating and cooling back and forth. I have natural wood floors and its not good for them.
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01-23-2019, 09:04 PM
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#60
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Bus Geek
Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 10,482
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
Rated Cap: 77
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Quote:
Originally Posted by yaakbus
The only trouble with a wood stove from my view is its illegal to carry wood across state lines which makes it a pain in the butt. But know they are super effective. I personally prefer constant heat rather then the heating and cooling back and forth. I have natural wood floors and its not good for them.
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I can use scrap engineered wood, just not cut log fire wood that may still carry pests.
As effective as they are you can usually find enough "firewood" where ever you go to use for one night.
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