I am thinking about designing a car battery charge maintainer for long trips/car storage, and use a solar panel as an energy source. All other things aside, a few questions:
- Can you use standard CC/CV charging methods? I have experience designing chargers for Li-Ion - wondering if the same principles can be applied.
- On days without much sun, boosting output voltage up might not leave me with substantial current to play with. I’m curious what the average drain rate due to internal losses is for a 12v car battery?
- If anyone has designed a charger before, at what current do you cut off the charge cycle and finish the “top off”?