So I realize this might be a bit specific, but I hope I am not the first person to need this
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I want a setup to be able to charge the lead acid battery in my "\*van\*" from a lifepo4 battery pack, so that I can use the built in fan, radio and lights overnight without killing the battery
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But I also need to be able to charge the lifepo4 battery while the engine is running
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Is there a simple plug and play solution for this? Or even a combination of devices that are safe to use together? Or will I have to settle for unplugging the lead acid battery and plugging the lifepo4 in its place every night?