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Old 05-01-2019, 08:23 PM   #1
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Simple Guide to Battery Life in your RV - By Redbaron73

Over the years, I have seen a lot of questions regarding how to operate the batteries in our coaches. I have learned a lot from members on this site and other resources on the internet, and wanted to share a document that covers the house batteries A to Z.

The link below is to a PDF document. As I find more information or heaven forbid, find errors, I will update the document and post back to this thread.

Hopefully this resource can help you.

Simple Guide to Battery Life in your RV – Newmar Hoots
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Old 05-01-2019, 08:49 PM   #2
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Fantastic Resource!
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Old 05-01-2019, 09:18 PM   #3
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Good stuff, thanks.
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Old 05-01-2019, 09:30 PM   #4
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Lots of good information in there. Thanks, RB73.

TJ
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Old 05-01-2019, 10:41 PM   #5
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Wow...amazing! Thank you...this’ll give me reading material for the next few years!! LOL
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Old 05-01-2019, 11:28 PM   #6
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I found a few typos that I am going to correct.

On page 11 when computing [G] you should multiply the value in [B] and the value in [C].

The 12-volt bank size by the 20hr rating gives total capacity.


Also page 9 refers to an rvwatt. Dont go crazy trying to figure out what that term means, should be "2800-watt"
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Old 05-02-2019, 12:26 AM   #7
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How many hours do you go between generator starts when you are boondocking?

I have a 2004 Winnebago 40' RV with 4-6V-GC2-Golf cart batteries. This is the equivalent to a 12V-450AH of battery storage.

I have a 17 cu-ft residential refrigerator and I get about 22-23 hours of battery live before my battery State Of Charge (SOC) drops to about 40% or 12.0V... and then I start my 7500W generator for about 2-3 hours every day.

Note: I have a Dimensions 2000W Inverter/100W Charger).

Maybe you get more or less useful battery life between generator starts?
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Old 05-02-2019, 04:28 AM   #8
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Great resource...thank you!
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Old 05-02-2019, 05:51 AM   #9
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Nicely done, Sir!
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Old 05-02-2019, 05:58 AM   #10
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On the BMK, I've read this and I've read the multi-page thread where multiple people have posted how they did it.

The thing I'm still confused on is hooking up the BMK to the inverter and the ARC control panel. Specifically, where does new wire (telephone/twisted pair) need to be run. I think to the inverter and if so, where is the inverter normally located?
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Old 05-02-2019, 06:29 AM   #11
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Quote:
Originally Posted by tnedator View Post
On the BMK, I've read this and I've read the multi-page thread where multiple people have posted how they did it.

The thing I'm still confused on is hooking up the BMK to the inverter and the ARC control panel. Specifically, where does new wire (telephone/twisted pair) need to be run. I think to the inverter and if so, where is the inverter normally located?
The me-bmk is a network device and needs to plug into a network port. The kit includes the phone cable and a phone splitter adapter.

On mine, i routed the cable to the back corner of the bays where the AGS was, and installed the phone splitter in the network port of the ags. I then connected both cables into the splitter. One cable goes to the inverter and the other to the bmk. This puts all devices on the network.
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Old 05-02-2019, 07:39 AM   #12
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Quote:
Originally Posted by redbaron73 View Post
The me-bmk is a network device and needs to plug into a network port. The kit includes the phone cable and a phone splitter adapter.

On mine, i routed the cable to the back corner of the bays where the AGS was, and installed the phone splitter in the network port of the ags. I then connected both cables into the splitter. One cable goes to the inverter and the other to the bmk. This puts all devices on the network.
Thanks. When I get my RV back, I'll figure out where everything is located. I don't know where the inverter or AGS are located. I should, but I don't.
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Old 05-02-2019, 09:04 AM   #13
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Quote:
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Thanks. When I get my RV back, I'll figure out where everything is located. I don't know where the inverter or AGS are located. I should, but I don't.
Inverter is in between frame rails in the most forward pass thru bay.

Ags is on door side in the last bay before the pegboard bay, located on the wall.
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Old 05-02-2019, 10:07 AM   #14
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Professor Redbaron

Professor Redbaron,

Your class in RV power management is outstanding. Any Newmar training institution should use it as a guide. It should be included by Newmar with every new coach delivered.

All RV manufacturers should create a similar guide and include it with all new coaches.

Thank you for this monumental document.
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