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01-13-2025, 10:07 AM
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#1
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Senior Member
Newmar Owners Club
Join Date: Mar 2013
Posts: 140
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Lithium upgrade 2015 Dutch Star
Miraculously, my original AGM batteries are reaching their end of life at just over 9 years. My plan is to replace them with 3 of these: https://a.co/d/33OQxT1. Litime 12V 230Ah Bluetooth Lithium RV Battery, Low Temp Cutoff Protection, Built-in 200A BMS, Max 2944Wh.
I’ll also use the Victron Energy BMV-712 Smart Battery Monitor and the Renogy 12V 40A DC to DC Battery Charger.
I’m pretty clear on how to install everything but I have one concern. I’ve read where people use the Litime batteries to start the generator without any issues. This makes sense to me since there would be 3 200A BMS’s in parallel for a theoretical 600As. Litime states the BMS in these batteries have 1000A surge capability. They also have a disclaimer about using their batteries as starting batteries.
Does anyone here have 1st hand experience with using Litime batteries to start the 10k QD generator? If so, have you had any issues?
I won’t be using solar so I’m counting on using the generator to recharge.
Thanks - Phil
__________________
Phil and Barbara
2015 Newmar Dutch Star 4369
24 Ford Bronco and SMI Air Force One
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01-14-2025, 07:13 AM
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#2
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Senior Member
Newmar Owners Club Freightliner Owners Club iRV2 No Limits Club
Join Date: Aug 2013
Posts: 1,065
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I didn’t think the generator started from the house batteries….so it may not matter?
__________________
2017 Newmar Ventana 4310
1,440W solar / 800 AH Lithium
2007 CR-V
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01-14-2025, 07:45 AM
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#3
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Senior Member
Join Date: Jul 2015
Location: Lenexa KS
Posts: 2,197
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Quote:
Originally Posted by richpatty
I didn’t think the generator started from the house batteries….so it may not matter?
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I'm with Rich. I thought the genny was wired to the chassis batts.
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Bill & Kelli 2015 Dutch Star 4366
2002 Safari Zanzibar 3906
1995 Fleetwood Bounder 36JD
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01-14-2025, 09:47 AM
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#4
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Senior Member
Join Date: Nov 2007
Location: Charleston, WV
Posts: 3,505
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I went with the Epoch battery because it was heated. The low temp cutoff type means you have to turn the battery on again once the cutoff trips.
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John and Mary Knight
2015 Newmar Ventana 4311 - wheelchair accessible
2015 Cadillac SRX Luxury AWD
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01-14-2025, 12:46 PM
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#5
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Senior Member
Newmar Owners Club Tiffin Owners Club
Join Date: Mar 2018
Location: Portland, OR
Posts: 798
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I was in the "Doesn't the generator start off the coach batteries" camp until I realized that there isn't hard fast rule as I browsed various forum posts. I looked on Newgle for your model and year, but couldn't find anything. For my coach (2023 New Aire) there are instructions about how to start the generator even if the coach batteries are dead ("join the batteries by pressing BATTERY BOOST then start the generator, keep button held for 20 seconds after generator starts" as an example for my factory Lithium equipped rig) which implies my generator starts off the coach batteries.
For a cold generator start (like below -4 degrees F) there is even an added suggested step in the Newgle article of starting the rig first then the generator if you can...
Disconnect the house batteries and try to start the generator as a quick test for your specific year / model?
Best,
-Mark
__________________
2023 Newmar New Aire 3543
2018 Tiffin Wayfarer 24BW
2013 Fiat 500 Turbo Dinghy
2024- Present Secretary & Treasurer, NKK Oregon Explorers
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01-14-2025, 05:56 PM
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#6
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Senior Member
Join Date: Apr 2024
Location: WI Driftlesser
Posts: 2,586
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Along those lines, there's no law preventing you from swapping the generator to the chassis start batteries if you want.
I've considered putting ALL 12V loads on the chassis if going to 48V, makes a lot of sense because until the 48V is completely dead, it will have power to recharge the chassis to start the generator, and if it IS dead, then you wait for solar to get going.
__________________
"Bringing third world electrical work to first world luxury." RV makers of Murica!
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01-15-2025, 12:31 PM
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#7
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Junior Member
Newmar Owners Club
Join Date: May 2024
Location: Cashiers, NC
Posts: 12
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Just got this from Newmar:
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01-15-2025, 12:49 PM
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#8
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Senior Member
Join Date: Jul 2014
Posts: 37,096
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If your generator starts from the chassis batteries or you rewire them to, be sure to confirm that something is charging them. Many RV generators don't have charging systems because the RVs charging system handles that thru the BI-DIRECTIONAL isolation system. That is often disabled with DC to DC charger installs.
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01-15-2025, 02:15 PM
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#9
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Senior Member
Join Date: Dec 2009
Location: North Texas
Posts: 1,111
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It would seem to me - and someone mentioned this above - that if you do start the generator off the house batteries, that pressing the "Batt Boost" button would spread that relatively small load over a bunch of batteries.
I just switched to these about a month ago.
https://www.vatrerpower.com/products...es-2560w-power
I went with 2 of these self heating batteries so cold temps are less of an issue. Also caught these on a good Black Friday sale, so both batteries were just under $1100 delivered. Even the current price is not bad.
I also made very few changes to install these. I simply dropped them in the way the Wet Lead Acids were installed.
The only change I made was to my Inverter/Charger which I set to Absorb Charge at 14.6 and Float Charge at 13.8. (Those settings came from the Vatrer website).
My generator DOES start from the house batteries (the 2 new Vatrers), and I have an old QD 12.5 HDCAB with the 3LD1 Isuzu Diesel. The batteries don't even blink. Just a strong solid startup.
It's only been a month, but so far I'm very happy with this solution, and while it might not work for all, it's working for me.
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01-15-2025, 02:20 PM
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#10
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Senior Member
Join Date: Mar 2024
Location: Bohemia NY
Posts: 2,020
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Quote:
Originally Posted by richpatty
I didn’t think the generator started from the house batteries….so it may not matter?
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Most RVs use the house battery bank to start the genny. This is common as the genny itself does not have charging capability and needs power to run. So the design is for the house battery charger which gets power from the genny will support the genny while running.
__________________
Dennis
Bohemia NY
2008 Nimbus 342 SE Carlyle
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01-15-2025, 02:22 PM
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#11
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Senior Member
Join Date: Mar 2024
Location: Bohemia NY
Posts: 2,020
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Quote:
Originally Posted by pshoe
Miraculously, my original AGM batteries are reaching their end of life at just over 9 years. My plan is to replace them with 3 of these: https://a.co/d/33OQxT1. Litime 12V 230Ah Bluetooth Lithium RV Battery, Low Temp Cutoff Protection, Built-in 200A BMS, Max 2944Wh.
I’ll also use the Victron Energy BMV-712 Smart Battery Monitor and the Renogy 12V 40A DC to DC Battery Charger.
I’m pretty clear on how to install everything but I have one concern. I’ve read where people use the Litime batteries to start the generator without any issues. This makes sense to me since there would be 3 200A BMS’s in parallel for a theoretical 600As. Litime states the BMS in these batteries have 1000A surge capability. They also have a disclaimer about using their batteries as starting batteries.
Does anyone here have 1st hand experience with using Litime batteries to start the 10k QD generator? If so, have you had any issues?
I won’t be using solar so I’m counting on using the generator to recharge.
Thanks - Phil
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Consider going with 2, 300 amp batteries. This will allow a 3rd for future expansion. Testing my 12K genny requires ~265 amps for a start in cold weather. 2 of the 200 or 300 amp batteries with 200 amp BMS do this with ease.
__________________
Dennis
Bohemia NY
2008 Nimbus 342 SE Carlyle
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01-22-2025, 09:59 AM
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#12
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Junior Member
Join Date: Dec 2024
Posts: 3
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Do not use as a cranking battery
According to the manufacturer of your battery:
"Do NOT use it as a starter battery. If need a starting battery, please consider LiTime 12V marine starting batteries series."
Also, the 1000A surge capacity is instaneous (i.e. a short) and is not the same as cold cranking amps which considers a longer duration.
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01-22-2025, 10:23 AM
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#13
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Senior Member
Newmar Owners Club
Join Date: Mar 2013
Posts: 140
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Thanks to everyone for the input. I’ve decided to go with 2 Vatrer 300ah self heating batteries that vtwinwilly used. I will install the DC to DC charger to protect the alternator and the shunt to monitor performance. I’ll let you all know how it works out. To be clear, the house batteries start the generator in our DS.
__________________
Phil and Barbara
2015 Newmar Dutch Star 4369
24 Ford Bronco and SMI Air Force One
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01-22-2025, 06:42 PM
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#14
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Senior Member
Join Date: Mar 2024
Location: Bohemia NY
Posts: 2,020
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Those 2 batteries will start the genny no problem. As you will have 2 batteries you need enough charger capacity to support both BMS and also support the heaters when needed. I would go with at least 60 amp DC-DC. To get best use of the generator for charging the batteries consider an inverter charger with a charge section of 100 to 150 amps. That will put you at a 6-to-4-hour charge rate. The shunt meter will get all confused whenever the heaters are used as it will record the heating current as charging current. Keep in mind the 60A DC-DC that the 60A is the rated output. Should alternator voltage drop it will draw even more current to compensate.
__________________
Dennis
Bohemia NY
2008 Nimbus 342 SE Carlyle
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