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11-08-2019, 08:45 AM
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#29
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Registered User
Join Date: Oct 2011
Posts: 2,183
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Quote:
Originally Posted by Tizbad
I met a guy with a King Aire and he can run his front A/C on the batteries. I think it had (16) 6-volt batteries. Don't know if this is standard equipment or not?
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Yes
For a million + $$$ coach it can be [emoji106][emoji106][emoji106]
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11-08-2019, 09:30 AM
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#30
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Senior Member
Join Date: Jan 2019
Posts: 138
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Quote:
Originally Posted by Tizbad
I met a guy with a King Aire and he can run his front A/C on the batteries.
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Yep, I can too. Just not for very long.
__________________
Jim & Trish
Franklin, NC
2016 London Aire 4516
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11-08-2019, 11:21 AM
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#31
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Senior Member
Newmar Owners Club Freightliner Owners Club Entegra Owners Club
Join Date: Nov 2015
Location: AZ
Posts: 6,425
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Quote:
Originally Posted by Squerly
leaving it on also means that, should shore power go down, the inverter will continue to feed power to whatever is on. There could be dead batteries when you return.
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A totally agree with this.
__________________
Newmar 2016 Canyon Star 3710
Newmar 2018 Dutch Star 4369 SP
Newmar 2023 Dutch Star 4369 FL
Entegra 2025 Cornerstone 45D on order
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11-08-2019, 11:49 AM
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#32
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Senior Member
Join Date: Jul 2014
Posts: 35,413
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Quote:
Originally Posted by Stuart W
A totally agree with this.
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That goes along with the bilge pump on or off argument, in a boat.
Some don't want to kill the battery running the bilge pump, but what good is a charged battery on a sunk boat ?
If my inverter runs the fridge, I'll leave it on hoping I get back to it before the batteries are dead. That gives me more time before my food spoils.
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11-08-2019, 12:14 PM
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#33
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Senior Member
Join Date: Mar 2016
Location: Fort Myers, FL
Posts: 604
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Quote:
Originally Posted by twinboat
I'll leave it on hoping I get back to it before the batteries are dead.
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Most of our coaches have an Energy Management System that will run the generator to charge up the batteries when they get to a set level. That being the case, we should be able to run for a pretty long time without shore power.
Most AGMs should not be ran lower then 50% charge which in my case is 12.3 volts. I set my EMS to start the generator at 12.4 volts.
-B
__________________
Full time RVer since 4/2016. Newmar Mountain Aire 4523 - Jeep Rubicon - Harley FLTCR - 2022 F450 Platinum, 2022 Momentum 351MS-R with Curt Flex Air hitch and MORryde IS - Also considering a Polaris General 4 Seater and a Can Am Spyder RT
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11-08-2019, 04:04 PM
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#34
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Registered User
Join Date: Oct 2011
Posts: 2,183
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Quote:
Originally Posted by twinboat
That goes along with the bilge pump on or off argument, in a boat.
Some don't want to kill the battery running the bilge pump, but what good is a charged battery on a sunk boat ?
If my inverter runs the fridge, I'll leave it on hoping I get back to it before the batteries are dead. That gives me more time before my food spoils.
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Thats smart
Concerning loosing shore power
Both of my current Inverter chargers shut down when the Batteries get down to 10.5
Volts.
As far as bilge pumps, my current boat has 5
Compartmentalized.
The House batteries, aft mounted power the rear 3.
Non are powered by the 8, 6 volt deep cycle Inverter batteries. Located foreward.
The 15 KW westerbeke generator can bet set to start also.
The marina we are at seldom looses power for more than a few hrs. So in 19 year s
I have never set the auto start mode on the generator.
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11-08-2019, 04:26 PM
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#35
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Senior Member
Join Date: Jul 2014
Posts: 35,413
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Quote:
Originally Posted by BrokeDown
Most AGMs should not be ran lower then 50% charge which in my case is 12.3 volts. I set my EMS to start the generator at 12.4 volts.
-B
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AGM and flooded batteries can safely be run down to 15% capacity.
It will cut their life in 1/2, if done routinely, but an occasional deep discharge will not damage them.
This DOD, ( depth of discharge ) chart is from Lifeline Battery. I marked 50% and 15 % DOD cycle life.
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11-09-2019, 07:09 AM
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#36
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Senior Member
Join Date: Mar 2016
Location: Fort Myers, FL
Posts: 604
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Thanks Twinboat1. With the expense of these things, I would prefer that they last as long as possible! LOL
__________________
Full time RVer since 4/2016. Newmar Mountain Aire 4523 - Jeep Rubicon - Harley FLTCR - 2022 F450 Platinum, 2022 Momentum 351MS-R with Curt Flex Air hitch and MORryde IS - Also considering a Polaris General 4 Seater and a Can Am Spyder RT
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11-09-2019, 08:55 AM
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#37
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Senior Member
Join Date: Jul 2014
Posts: 35,413
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Quote:
Originally Posted by BrokeDown
Thanks Twinboat1. With the expense of these things, I would prefer that they last as long as possible! LOL
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I get that. In my situation I don't have the space for 4 batteries so I run the 2, that I can fit, down deeper.
They will have a shorter life but will cost 1/2 as much to replace.
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11-09-2019, 11:36 AM
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#38
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Senior Member
Join Date: Jul 2012
Location: Fulltime, USA
Posts: 16,706
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My inverter died about a year ago. And I don’t need it.
I don’t boondock. So, the inverter is bypassed and I have a smart charger on the 6 volt batteries.
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11-09-2019, 06:57 PM
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#39
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Senior Member
Newmar Owners Club
Join Date: Aug 2007
Location: Belfair WA.
Posts: 777
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We have 4 Lifeline 220AH batteries that were installed 5/14, have over 6550 cycles on them, still operating at over 100% capacity that last time I checked them.
__________________
"Those who stand for nothing fall for anything"
2020 Dutch Star - 3736 - L9 450HP, Freightliner
2008 Newmar VTDP - 3330 - ISBXT 350 Spartan NVS
FMCA F113720, NKK 18573
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11-09-2019, 07:08 PM
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#40
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Senior Member
Join Date: Mar 2016
Location: Fort Myers, FL
Posts: 604
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Quote:
Originally Posted by Spikester
still operating at over 100% capacity that last time I checked them.
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Spikester, how are you checking them?
-B
__________________
Full time RVer since 4/2016. Newmar Mountain Aire 4523 - Jeep Rubicon - Harley FLTCR - 2022 F450 Platinum, 2022 Momentum 351MS-R with Curt Flex Air hitch and MORryde IS - Also considering a Polaris General 4 Seater and a Can Am Spyder RT
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11-09-2019, 07:52 PM
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#41
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Senior Member
Join Date: Jul 2014
Posts: 35,413
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Here is a chart, from the Lifeline battery maintance manual, of expected life cycles, based on depth of discharge, of their batteries.
6500 cycles is a discharge of maybe 5% deep.
That's about 22 AH each cycle. You could use a cheap marine battery for that kind of use.
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11-09-2019, 08:21 PM
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#42
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Senior Member
Newmar Owners Club
Join Date: Aug 2007
Location: Belfair WA.
Posts: 777
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Quick answer, when bank is fully charged, I open circuit the battery (no loads), apply a constant 22 amp load (20 Hour Rate), and time how long it takes for the battery bank to get 10.5VDC. Immediately reconnect the battery bank and charge it back to 100%. Not something I do all the time or recommend doing all the time. I did it this summer because of the number of cycles on the battery bank. Only real way to measure its performance.
__________________
"Those who stand for nothing fall for anything"
2020 Dutch Star - 3736 - L9 450HP, Freightliner
2008 Newmar VTDP - 3330 - ISBXT 350 Spartan NVS
FMCA F113720, NKK 18573
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