I'm working on a dual alternator van setup capable of producing 150 amps while the engine is running. I want to know the best way to use this to charge my system that has two 300Ah LiFePO4 batteries connected in parallel. Do I need a specific charge controller, even though the voltages match? If there is one available, how would I integrate solar charging into this system later on? I'm trying to transition from a Bluetti AC200L, but the costs and extra components seem a bit overwhelming. Any advice would be appreciated!
3 Answers
In your case, a Renogy 50A MPPT/DC charger combo might be the easiest route since it supports both solar and DC-DC charging without much hassle. You can find one [here](https://www.amazon.com/gp/aw/d/B093BB5JKF/).
A lot of skoolies run 400+ amp alternators, so it's definitely doable. Victron has various options that should work well for your needs. There are also plenty of YouTube guides available that can walk you through the setup process—check out some videos [here](https://youtu.be/OwcgNvBUPic) for tips!
You can use Victron Orion XS DC-DC Chargers that have a 50A model you can parallel for extra power, but keep in mind your batteries' maximum charge current. When you add solar, all charging sources can connect in parallel to your battery bank. Just be cautious about overloading your batteries with too much current; there are solutions in the Victron setup that help manage charging from multiple sources.
Doesn't running multiple chargers in parallel cause confusion with the battery's charge state?
I have a Bluetti AC200L that manages both AC and solar inputs quite easily. It’s puzzling that using separate components feels more complicated when the all-in-one option handles it so smoothly!