2024 Classic Lithium Battery Charging

[whitakerjoed]

Hello,

I seem to be having issues with the lithium batteries charging on my 2024 Classic. When plugged into a 15 AMP service at the storage facility the batteries seems to lose their charge down to 60%, while the battery disconnect is on. When I flip the breaker to the converter the batteries will start to charge again for a while, they got back up to 95% over two days and just turned the battery disconnect off and plan to monitor it over the next week. We didn't seem to have any issues until we took the unit in for warranty work.

The airstream dealership told me that the only way to charge lithium in a classic is with a 50 AMP service and that a 30 AMP generator would only charge the batteries if the converter wiring is on the same side as the smart plug. Which means it may be difficult to boondock for an extended amount of time. None of this makes sense to me but this is all new to me. Is any of what they told me true?

[uncle_bob]

Hi

What is the charger they are putting in the 2024 Classic's? The behavior you describe would not be how previous year's "gear" works.

Bob

[whitakerjoed]

It’s a Progressive Dynamics 9360

[uncle_bob]

Hi

Ok, that's what they have been doing pretty much forever. They have changed brands and models a few times over the years, but it's still the same setup.

What the dealer told you is not correct. You can indeed run that converter charger off of a 15A cord. You don't want much of anything else powered up when you do that. However it will work.

What it sounds like is that your converter is set to lead acid rather than to lithium. There's an LED that indicates the setting. Unless you have a very unusual installation, that LED is buried where you can't easily see it. (= you have to pull the beast out to check the LED ....).

Bob

[bbdo]

Originally Posted by uncle_bob

Hi

Ok, that's what they have been doing pretty much forever. They have changed brands and models a few times over the years, but it's still the same setup.

What the dealer told you is not correct. You can indeed run that converter charger off of a 15A cord. You don't want much of anything else powered up when you do that. However it will work.

What it sounds like is that your converter is set to lead acid rather than to lithium. There's an LED that indicates the setting. Unless you have a very unusual installation, that LED is buried where you can't easily see it. (= you have to pull the beast out to check the LED ....).

Bob

I also have a Classic 33FB - 2024. The converter is under the dining seat, and the front kick panel comes right off. Taped to the converter is a little SIM-card tool just for this purpose. Not too bad to get to, and you want Blue for Lithium. You can easily cycle through each mode. I had to set mine up as well. I hope this helps!

[Power-Stroke]

We were having the same issue with the same converter/charger. Turned out it (charger) was improperly configured from the factory. Changed the setting and it has been perfect since. Check out your manual, it shows settings for lithium vs agm.