200 ah Lithium Battery Recommendation for 2019 Dynamax Isada 3
Updated 03/18/2026 | Published 03/16/2026
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Question:
This last fall I installed a towbar and all the electrical components to my jeep thanks to your videos and help. I am wanting to upgrade my original coach batteries, a 2019 Dynamax Isada 3, with an onboard 3,600W Onan generator, to two lithiam Lifepo4 batteries, preferably 200ah each. Which ones would you recommend and will they be able to start the generator without issues? Also, I will need to install a Progressive Dynamics converter section, PD4060CVS. 60 amps. Thank you!
asked by: Les H
Expert Reply:
Hey Les, for a 200 amp hour LiFePO4 battery the Redarc part # RED72RR would be a really great option. With two of these you'd easily be able to start your Cummins Onan Generator part # CM92ZR. Onan generators at a max require 650 cold cranking amps so two 200 amp hour batteries would make easy work of that.
You also would need a converter with ability to charge lithium batteries as well like what the # PD4060K you mentioned as well. Do you have any solar on your RV?
Product Page this Question was Asked From
Redarc Alpha150 Lithium RV Battery - LiFePO4 - 12V - 150 Amp Hour
- Battery
- RV
- 12V
- Group 31
- 150 Ah
- Lithium
- Redarc
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Les H.
3/17/2026
Not sure Jameson if you recieved my reply. I do have Solar power- 200 watts with a 30 amp solar controller and a 1000 watt pure sine wave inverter.