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Old 12-09-2021, 02:31 PM   #1
Oconomowoc
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Default Lithium battery

I have a 2021 gulfstream 238RK. Can I swap out my battery for a lithium battery without any modifications to the converter? a simple swap?
Lithium batteries are under $400 now
https://www.amazon.com/LISUATELI-Lif...9081795&sr=8-3
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Old 12-19-2021, 10:19 AM   #2
Texas Shriner
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An LFP battery is not the same as typical li-ion. The short answer is you can charge LFP as long as your converter output is <14.6V (assuming a 12V battery). The downside is that your converter output is likely a lot less than the LFP can take – it will recharge at a slower rate than it is capable of.
The battery you linked to is a china battery and the warranty info is hidden. Many U.S. manufacturers warranty 8-12 years. For me, that’s a plus. Allied battery is where me and several friends landed. Good luck!
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Old 05-01-2022, 10:07 AM   #3
RY469
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One of the considerations is that the Lithium has good BMS (Battery Management System) built in. Lithium's have a sweet spot (high - low voltage) for operation, the BMS controls this. In the case of the one you show, it does. Lithium's require higher voltage and current to charge than lead acid types (Lead = 13.7V max, Lion = 14.7V max). Many converters can accommodate this up to a point, but as the previous post mentioned, if not specifically designed for it, your converter may charge a little slower. Worse case, your Lion will not fully charge and you will need to get a new converter to get full capability. Maybe consider an upgrade to an inverter/charger while you are at it. My 2-cents.
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Old 09-05-2022, 06:09 PM   #4
Rvguy
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What type of batteries do you have in your coach chasis and house batteries? I have a 2008 gulfstream endura conquest motorhome 4200 international. It currently has 2 950 CCA flooded batteries and 2 840cca amg deep cycle for house side. Not sure if that was modified or original. All 4 batteries are needed replacement as my voltage has dropped and they are old.
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Old 09-05-2022, 10:02 PM   #5
NavyLCDR
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Quote:
Originally Posted by Rvguy View Post
What type of batteries do you have in your coach chasis and house batteries? I have a 2008 gulfstream endura conquest motorhome 4200 international. It currently has 2 950 CCA flooded batteries and 2 840cca amg deep cycle for house side. Not sure if that was modified or original. All 4 batteries are needed replacement as my voltage has dropped and they are old.
If the rating of the battery is given in CCA (Cold Cranking Amps), it is not a true deep cycle battery. Probably a marine battery.
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Old 09-06-2022, 06:24 AM   #6
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Ah good point you are correct. It says marine.

So now I need to figure out what's the correct size and capacity batteries for this couch. Not sure
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