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Replacement for converter/charger for 2015 2350

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barko1

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Replacement for converter/charger for 2015 2350
« on: October 20, 2026, 06:10:31 pm »
Wanting to upgrade so I can charge Lithium. What is a reasonable plug and play for the Intertec 5300 I have now?  Thanks

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LRUCH

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Re: Replacement for converter/charger for 2015 2350
« Reply #1 on: October 20, 2026, 09:08:06 pm »
The intertec 3500 is not able to fully charge lithium batteries, which only at 14.7 volts.


Here's the specs I found on it:
DC Output Voltage: 13.2 to 14.0 Volts DC (nominal ~13.85V max at no load)


Even though lithium batteries voltage peak at 13.6V, they need 14.6 (or 14.7 according to some sources) to finish charging the top 15%.  It also needs higher (than lead acid or SLA) voltage and amperage to charge in general.  Since lithium will absorb current at a high rate, it is likely to over load the intertec.

Larry
« Last Edit: Today at 04:55:20 pm by LRUCH »
Larry

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barko1

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Re: Replacement for converter/charger for 2015 2350
« Reply #2 on: Today at 04:52:31 pm »
Yes, that is why I need to replace it with a lithium capable one. There seem to many to choose from and I want to make the swap as simple as possible.  Thanks

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LRUCH

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Re: Replacement for converter/charger for 2015 2350
« Reply #3 on: Today at 05:02:05 pm »
Ah, sorry. I misinterpreted and thought you wanted a pkug and play battery for the intertec.


I also noticed that my previous reply was somehow saved in micro font. I fixed that.


There are several existing threads here in the forum that discuss the options for relaxing the converter for something captaining with lithium, as well as the pro's and con's.   In the main menu bar, use SEARCH and use the keyword Lithium.
Larry

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CalCruiser

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Re: Replacement for converter/charger for 2015 2350
« Reply #4 on: Today at 07:44:18 pm »
You didn’t state the full model# and  amperage of your old Parallex converter (probably 45A?) but you’ll need that before ordering.  Progressive Dynamics makes direct replacement “tray”  modules specifically designed for Lithium. Check their website.

You’ll also need a DC-DC converter wired in series between the alternator and house batteries so the alternator doesn’t get fried. The downside is that disables the emergency start function because it only allows current to flow in one direction.

« Last Edit: Today at 07:48:54 pm by CalCruiser »
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